A natural gas connection fitting

Abstract

The utility model discloses a natural gas connecting joint, including natural gas valve, the natural gas joint of installation in natural gas valve one end, the natural gas pipeline of installation in natural gas valve other end and set up in the traction mechanism of natural gas joint inside, be used for the traction of natural gas hose, still include the connecting mechanism of setting in the traction mechanism one end, be used for the fixed connection of natural gas hose, through the lift of both ends of two -way screw rod rotation drive jacks, and the lift of arc plate is driven by jacks, and the natural gas hose is opened, and the elasticity of natural gas hose and the friction of convex strip are used to fix the connection of natural gas hose and arc plate, subsequently, through the rotation of six edge nut drive screw, and the extension rod is removed to the rotation of screw rod drive, and the natural gas hose is pulled, replaces the artificial great force and is connected, and the natural gas hose is connected in the one end of natural gas joint automatically, avoids the safety of natural gas hose installation engineering while guaranteeing the consumption of a large number of manpower.

Description

Technical Field

[0001] This utility model relates to the field of natural gas connection joint technology, and in particular to a natural gas connection joint. Background Technology

[0002] Natural gas connection fittings are key components in gas transmission systems, used for the safe and sealed connection of pipelines and equipment. Their core features include:

[0003] Durable materials: mostly made of brass, stainless steel or nickel-plated steel, which are corrosion-resistant and can withstand high pressure;

[0004] Sealing design: Zero leakage is ensured by using threaded, press-fit, or flanged structures with rubber / metal gaskets;

[0005] Safety standards: Must comply with national standards (such as GB / T9119), some include self-closing valves to prevent leakage;

[0006] Various types are available, such as quick-connect, threaded, and flanged types, to suit different scenarios (indoor / outdoor, high pressure / low pressure).

[0007] Installation requires professional operation and regular inspection to avoid safety hazards caused by loosening or aging.

[0008] In the prior art, Chinese utility model patent CN210533470U discloses a gas meter pipeline connection joint, including a protective sleeve, a connecting pipe, a connector, and a rubber hose. The connecting pipe is set inside the protective sleeve, and the connector is set on one side of the protective sleeve. The connector is fixed to the outer shell of the protective sleeve by a fastening knob. The gas meter pipeline body is set on the left side of the connecting pipe, and the rubber hose is set on the left side of the protective sleeve. This utility model has a simple connection and strong sealing performance. The protective pipe can seal the gas meter pipeline body that is threaded, and the rubber hose further improves its sealing performance. For the gas pipeline interface, a flat gasket and a sealing ring are used for sealing at the same time as the threaded connection to ensure the sealing performance of the connection. Compared with most threaded joints, the sealing performance is stronger. In addition, the anti-corrosion layer set on the outside of the rubber hose can prevent the connector from being corroded during long-term use, thus making the connection joint more durable.

[0009] Problems compared to existing technologies: Some existing natural gas connectors require manual force to connect to natural gas hoses, which is labor-intensive and poses a significant risk.

[0010] Therefore, there is an urgent need for a natural gas connection connector. Utility Model Content

[0011] The purpose of this invention is to overcome the shortcomings of the prior art and provide a natural gas connection connector.

[0012] The present invention solves its technical problem through the following technical solution: a natural gas connection joint, including a natural gas valve, a natural gas connector installed at one end of the natural gas valve, a natural gas pipeline installed at the other end of the natural gas valve, and a traction mechanism disposed inside the natural gas connector for traction of a natural gas hose. The traction mechanism includes a lead screw rotatably connected to the middle position of the natural gas connector, an extension rod being drivenly connected to the outside of the lead screw, and a connecting mechanism disposed at one end of the traction mechanism for fixing the natural gas hose.

[0013] As a further embodiment of this utility model: the traction mechanism further includes a bracket, which is fixed to the middle position of the natural gas connector by bolts. The lead screw is rotatably connected to the bracket. One end of the extension rod is fixedly installed with a box body, and one end of the box body is provided with a square tube. The connecting mechanism includes a bidirectional lead screw, which is rotatably connected to the middle position of the square tube. The two ends of the bidirectional lead screw are drivenly connected to a top rod. An arc-shaped plate is fixedly installed above the top rod, and the top rod is slidably connected to the square tube.

[0014] As a further embodiment of this utility model: the box body is provided with a driving mechanism for driving the bidirectional lead screw to rotate. The driving mechanism includes a driving bevel gear, which is rotatably connected to the inner wall of the box body. A transmission shaft is provided on the outer side of the driving bevel gear. A driven bevel gear is fixedly installed at the middle position of the bidirectional lead screw. A cross screw is fixedly installed at one end of the driving bevel gear.

[0015] As a further embodiment of this utility model: the natural gas valve is provided with installation mechanisms at both ends for installing natural gas connectors and natural gas pipelines. The installation mechanism includes a retaining ring, which is welded to both ends of the natural gas connector. One end of the natural gas connector and the natural gas pipeline is cut with a threaded groove. A sealing ring is provided on the inner wall of the retaining ring. Connecting nuts are slidably connected to both ends of the natural gas valve.

[0016] As a further improvement of this utility model, the outer wall of both the arc-shaped plate and the natural gas connector is provided with multiple protruding strips.

[0017] As a further improvement of this utility model, a hexagonal nut is fixedly installed at one end of the lead screw.

[0018] As a further improvement of this utility model: a limiting frame is fixed to the inner wall of the bracket, and the extension rod is slidably connected to the limiting frame.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0020] 1. The bidirectional screw rotation drives the lifting rods at both ends to rise and fall. The lifting rods drive the arc plate to rise and fall, opening the natural gas hose. The elasticity of the natural gas hose and the friction of the convex strips are used to fix the natural gas hose to the arc plate. Then, the hexagonal nut drives the screw to rotate. The rotation of the screw drives the extension rod to move and pull the natural gas hose. This replaces manual force to connect the natural gas hose and automatically connects the natural gas hose to one end of the natural gas connector, avoiding a lot of manpower and ensuring the safety of the natural gas hose installation project.

[0021] 2. The drive bevel gear is driven by the cross screw to rotate, which in turn drives the transmission shaft to rotate. The transmission shaft drives the driven bevel gear to rotate, which in turn drives the double-acting screw to rotate. The connecting nut and the threaded groove cooperate to press the sealing ring tightly against the retaining ring, thus sealing the natural gas valve and ensuring the airtightness of the natural gas connection joint. Attached Figure Description

[0022] Figure 1 A side view structural schematic diagram according to an embodiment of the present utility model is shown;

[0023] Figure 2 A schematic diagram of the front cross-sectional structure according to an embodiment of the present invention is shown;

[0024] Figure 3 The present invention provides an embodiment of the present invention. Figure 2 A magnified view of the structure at point A in the middle;

[0025] Figure 4 The present invention provides an embodiment of the present invention. Figure 2 A magnified schematic diagram of the structure at point B in the middle;

[0026] Figure 5 The present invention provides an embodiment of the present invention. Figure 2 A magnified schematic diagram of the structure at point C.

[0027] Legend:

[0028] 100. Natural gas valve; 200. Natural gas connector; 300. Natural gas pipeline; 400. Raised bar; 500. Hexagonal nut; 600. Limiting bracket;

[0029] 101. Bracket; 102. Lead screw; 103. Extension rod; 104. Box body; 105. Square tube; 106. Double-acting lead screw; 107. Top rod; 108. Curved plate;

[0030] 201. Drive bevel gear; 202. Drive shaft; 203. Driven bevel gear; 204. Phillips head screw;

[0031] 301, retaining ring; 302, threaded groove; 303, sealing ring; 304, connecting nut. Detailed Implementation

[0032] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0035] Example 1: As Figure 1-4As shown, a natural gas connection connector includes a natural gas valve 100, a natural gas connector 200 installed at one end of the natural gas valve 100, a natural gas pipeline 300 installed at the other end of the natural gas valve 100, and a traction mechanism disposed inside the natural gas connector 200 for traction of a natural gas hose. The traction mechanism includes a lead screw 102 rotatably connected to the middle position of the natural gas connector 200. One end of the lead screw 102 is fixed with a hexagonal nut 500 by bolts, which drives the lead screw 102 to rotate. An extension rod 103 is driven to the outside of the lead screw 102. The rotation of the lead screw 102 drives the extension rod 103 to move. The traction mechanism also includes a bracket 101, which is fixed to the middle position of the natural gas connector 200 by bolts. The lead screw 102 is rotatably connected to the bracket 101. One end of the extension rod 103 is fixed with a housing 104 by bolts. One end of the housing 104 is welded with a square tube 105. 103 drives the square tube 105 to move via the housing 104. A limit frame 600 is fixed to the inner wall of the support 101. The extension rod 103 is slidably connected to the limit frame 600, which limits the extension rod 103. The mechanism also includes a connecting mechanism at one end of the traction mechanism for fixing the natural gas hose. The connecting mechanism includes a bidirectional lead screw 106, which is rotatably connected to the middle position of the square tube 105. The device is connected to a push rod 107 at both ends. The rotation of the double-acting screw 106 drives the push rods 107 at both ends to rise and fall. An arc plate 108 is fixed above the push rod 107 by bolts. The push rod 107 drives the arc plate 108 to rise and fall. The push rod 107 is slidably connected to the square tube 105. Multiple protrusions 400 are welded to the outer wall of the arc plate 108 and the natural gas connector 200. The multiple protrusions 400 increase the friction between the arc plate 108 and the natural gas connector 200 and the natural gas hose.

[0036] In this embodiment, the rotation of the bidirectional lead screw 106 drives the lifting rods 107 at both ends to rise and fall. The lifting rods 107 drive the arc plate 108 to rise and fall, thus opening the natural gas hose. The elasticity of the natural gas hose and the friction of the protrusion 400 are used to fix the natural gas hose to the arc plate 108. Subsequently, the hexagonal nut 500 drives the lead screw 102 to rotate. The rotation of the lead screw 102 drives the extension rod 103 to move, pulling the natural gas hose. This replaces manual forceful fitting and automatically fits the natural gas hose onto one end of the natural gas connector 200, avoiding a large amount of manpower while ensuring the safety of the natural gas hose installation project.

[0037] Example 2: Figure 1-5As shown, a natural gas connection connector includes a drive mechanism inside the housing 104 for driving a bidirectional lead screw 106 to rotate. The drive mechanism includes a drive bevel gear 201 rotatably connected to the inner wall of the housing 104. A transmission shaft 202 meshes with the outer side of the drive bevel gear 201, causing the drive bevel gear 201 to rotate. A driven bevel gear 203 is bolted to the middle position of the bidirectional lead screw 106. The transmission shaft 202 drives the driven bevel gear 203 to rotate, thereby causing the bidirectional lead screw 106 to rotate. One end of the drive bevel gear 201 is bolted to... A cross screw 204 drives the bevel gear 201 to rotate. The natural gas valve 100 has mounting mechanisms at both ends for installing the natural gas connector 200 and the natural gas pipeline 300. Each mounting mechanism includes a retaining ring 301 welded to both ends of the natural gas connector 200. One end of both the natural gas connector 200 and the natural gas pipeline 300 has a threaded groove 302. A sealing ring 303 is attached to the inner wall of the retaining ring 301, sealing both ends of the natural gas valve 100. Connecting nuts 304 are slidably connected to both ends of the natural gas valve 100.

[0038] In this embodiment, the drive bevel gear 201 is rotated by the cross screw 204, the drive bevel gear 201 drives the transmission shaft 202 to rotate, and the transmission shaft 202 drives the driven bevel gear 203 that meshes with it to rotate. In turn, the drive bevel gear 201 can drive the bidirectional lead screw 106 to rotate by meshing with the driven bevel gear 203. At this time, the rotation of the bidirectional lead screw 106 can push out the top rod 107 that meshes with both ends, thereby achieving the above-mentioned effect of opening the natural gas hose.

[0039] During this process, since the driven bevel gear 203 is fixedly connected to the middle of the double-acting screw 106, when the driven bevel gear 203 is driven by the transmission shaft 202, it will drive the double-acting screw 106 to rotate, thereby pushing out the push rods 107 provided at both ends of the double-acting screw 106.

[0040] By connecting the nut 304 and engaging the threaded groove 302, the sealing ring 303 is pressed tightly against the retaining ring 301 to seal the natural gas valve 100, ensuring the airtightness of the natural gas connection joint.

[0041] Working principle: First, the cross screw 204 drives the drive bevel gear 201 to rotate, which in turn drives the transmission shaft 202 to rotate. The transmission shaft 202 drives the driven bevel gear 203 to rotate, which in turn drives the double-acting screw 106 to rotate. The rotation of the double-acting screw 106 drives the top rods 107 at both ends to rise and fall. The top rods 107 drive the arc plate 108 to rise and fall, thus opening the natural gas hose. The elasticity of the natural gas hose and the friction of the convex strip 400 are used to fix the natural gas hose to the arc plate 108. Then, the hexagonal nut 500 drives the screw 102 to rotate. The rotation of the screw 102 drives the extension rod 103 to move, pulling the natural gas hose. This replaces manual forceful fitting and automatically fits the natural gas hose onto one end of the natural gas connector 200. Next, the connecting nut 304 at one end is tightened to fix the natural gas connector 200 to the natural gas valve 100. Then, the connecting nut 304 at the other end is tightened to fix the natural gas connector 200 to the natural gas pipeline 300.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A natural gas connection connector, characterized in that, It includes a natural gas valve (100), a natural gas connector (200) installed at one end of the natural gas valve (100), a natural gas pipeline (300) installed at the other end of the natural gas valve (100), and a traction mechanism disposed inside the natural gas connector (200) for traction of the natural gas hose. The traction mechanism includes a lead screw (102) rotatably connected to the middle position of the natural gas connector (200), and an extension rod (103) is drivenly connected to the outside of the lead screw (102). It also includes a connecting mechanism located at one end of the traction mechanism for fixing the natural gas hose.

2. A natural gas connection joint according to claim 1, characterized in that, The traction mechanism also includes a bracket (101), which is fixed to the middle position of the natural gas connector (200) by bolts. The lead screw (102) is rotatably connected to the bracket (101). One end of the extension rod (103) is fixedly installed with a box (104). One end of the box (104) is provided with a square tube (105). The connection mechanism includes a bidirectional lead screw (106), which is rotatably connected to the middle position of the square tube (105). Both ends of the bidirectional lead screw (106) are connected to a top rod (107). An arc plate (108) is fixedly installed above the top rod (107). The top rod (107) is slidably connected to the square tube (105).

3. A natural gas connection joint according to claim 2, characterized in that, The housing (104) is equipped with a drive mechanism inside, which is used to drive the bidirectional lead screw (106) to rotate. The driving mechanism includes a driving bevel gear (201), which is rotatably connected to the inner wall of the housing (104). A transmission shaft (202) is provided on the outer side of the driving bevel gear (201). A driven bevel gear (203) is fixedly installed at the middle position of the double-acting screw (106). A cross screw (204) is fixedly installed at one end of the driving bevel gear (201).

4. A natural gas connection joint according to claim 3, characterized in that, The natural gas valve (100) is equipped with installation mechanisms at both ends for installing the natural gas connector (200) and the natural gas pipeline (300). The installation mechanism includes a retaining ring (301), which is welded to both ends of the natural gas connector (200). Both the natural gas connector (200) and one end of the natural gas pipeline (300) are cut with threaded grooves (302). A sealing ring (303) is provided on the inner wall of the retaining ring (301). Connecting nuts (304) are slidably connected to both ends of the natural gas valve (100).

5. A natural gas connection joint according to claim 2, characterized in that, The outer walls of the arc plate (108) and the natural gas connector (200) are provided with multiple protrusions (400).

6. A natural gas connection joint according to claim 1, characterized in that, A hexagonal nut (500) is fixedly installed at one end of the lead screw (102).

7. A natural gas connection joint according to claim 2, characterized in that, The inner wall of the bracket (101) is fixed with a limiting frame (600), and the extension rod (103) is slidably connected to the limiting frame (600).

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