Safe replacement device for gas pipeline

Abstract

The utility model provides a gas pipeline safety replacement device, which belongs to the technical field of gas pipeline safety replacement, and comprises a nitrogen replacement device body and a tight connection mechanism, the tight connection mechanism comprises an adjusting assembly, a stabilizing assembly and two limiting assemblies, the adjusting assembly comprises a bearing plate arranged on the side of the nitrogen replacement device body, a threaded through hole is formed in the side wall of the bearing plate, an adjusting threaded rod is in threaded connection with the interior of the threaded through hole, and the side end of the adjusting threaded rod is rotationally connected with the side wall of the nitrogen replacement device body through a bearing. According to the gas pipe connecting device, the stabilizing assembly is arranged, the gas pipe connecting device can be suitable for connecting gas pipes of different sizes, the connecting tightness is improved, meanwhile, high practicability is achieved, the gas pipe is controlled through the adjusting assembly, the connecting state of the gas pipe and the device is tighter, and then the efficiency and effect of safe replacement are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of safe replacement of gas pipelines, in particular to a safe replacement device for gas pipelines. Background Art

[0002] The gas pipeline safety replacement device is a device specially used in gas pipeline systems. Its main function is to safely and efficiently replace the original gas in the pipeline with the target gas before the gas pipeline is put into use, after maintenance, or during the medium conversion process, to ensure that the gas composition in the pipeline meets the safety and use requirements, avoid the formation of combustible mixtures, and thus reduce the risk of safety accidents such as fire and explosion.

[0003] After searching, the patent document with publication number CN214093477U discloses a gas pipeline safety replacement device, including multiple connecting pipes connected in sequence, the diameters of the multiple connecting pipes are arranged in sequence from small to large, one end of the outermost edge of the multiple connecting pipes is threadedly fixedly connected to the gas pipe, and the other end of the outermost edge of the multiple connecting pipes is threadedly fixedly connected to the vent pipe. This utility model is easy to operate, can save replacement time, and improve the efficiency of gas replacement.

[0004] The above-mentioned prior art often has the following problems when used:

[0005] When using the existing gas pipeline safety replacement device, there is a lack of stabilization measures for the connected pipeline. The gas pipeline will vibrate during operation, which may be caused by the flow of gas, the operation of the compressor or pump, etc. After the replacement device is connected to the pipeline, it is affected by these vibrations for a long time, and the connection part may gradually loosen, which may easily cause gas leakage, so that the combustible gas in the pipeline cannot be fully replaced, increasing the safety risks of subsequent gas use. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a gas pipeline safety replacement device.

[0007] The embodiment of the present utility model provides a gas pipeline safety replacement device, comprising:

[0008] Nitrogen replacement device body;

[0009] A tight connection mechanism includes an adjustment component, a stabilization component and two limit components. The adjustment component includes a bearing plate arranged on the side of the nitrogen replacement device body. The side wall of the bearing plate is provided with a threaded through hole. An adjustment threaded rod is threadedly connected to the threaded through hole. The side end of the adjustment threaded rod is rotatably connected to the side wall of the nitrogen replacement device body through a bearing. Two No. 1 guide rods are fixedly connected to the side wall of the nitrogen replacement device body. The two No. 1 guide rods penetrate and are slidably connected to the side wall of the bearing plate.

[0010] Furthermore, the stabilization assembly includes a fixing plate fixedly connected to the side wall of the supporting plate, a two-way threaded rod is provided on the side of the supporting plate, the two-way threaded rod is rotatably connected to the bottom surface of the fixing plate through a bearing, the side wall of the supporting plate is fixedly connected to an annular plate through a bracket, and nuts are threadedly connected on the threaded sections of the two-way threaded rod with opposite thread directions, and the side walls of the two nuts are fixedly connected to a connecting plate, two arc-shaped clamping plates are provided in the annular plate, and the outer side walls of the two arc-shaped clamping plates are fixedly connected to a connecting rod, and the two connecting rods are slidably connected to the circumferential side wall of the annular plate, and the two connecting rods are fixedly connected to the two connecting plates respectively.

[0011] Furthermore, the limiting assembly includes a No. 2 guide rod fixedly connected to the upper surface of the fixed plate, the No. 2 guide rod is slidably sleeved with a limiting plate, and the side wall of the limiting plate is fixedly connected to the side wall of the nut.

[0012] Furthermore, one end of the adjusting threaded rod away from the nitrogen replacement device body is fixedly connected to a knob, and the top end of the bidirectional threaded rod is fixedly connected to a knob.

[0013] Furthermore, the two nuts and the two connecting plates are respectively located on the upper and lower sides of the annular plate.

[0014] Furthermore, the two nuts, the connecting plate, the second guide rod and the limiting plate are all symmetrically arranged with respect to the fixing plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The stabilizing component provided in the utility model can be applied to connecting gas pipes of different sizes and clamped and fixed thereto, which is easy to operate. While improving the tightness of the connection, it has strong practicality and is more in line with actual usage scenarios. The regulating component provided is used to control the gas pipe to make its connection with the device tighter, which is beneficial to improving the efficiency and effect of safe replacement and at the same time improving the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic diagram of the three-dimensional structure of a gas pipeline safety replacement device described in an embodiment of the utility model.

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure from another perspective of a gas pipeline safety replacement device described in an embodiment of the utility model.

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of a gas pipeline safety replacement device described in an embodiment of the utility model from another perspective.

[0020] In the above drawings: 1 nitrogen replacement device body, 2 bearing plate, 3 threaded through hole, 4 adjusting threaded rod, 5 No. 1 guide rod, 6 fixing plate, 7 bidirectional threaded rod, 8 annular plate, 9 nut, 10 connecting plate, 11 arc-shaped splint, 12 connecting rod, 13 No. 2 guide rod, 14 limit plate. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0022] like Figure 1-Figure 3 As shown, the embodiment of the present utility model provides a gas pipeline safety replacement device, comprising:

[0023] The nitrogen replacement device body 1 has a tight connection mechanism, which includes an adjustment component, a stabilization component, and two limit components. The adjustment component includes a bearing plate 2 provided on the side of the nitrogen replacement device body 1. The side wall of the bearing plate 2 is provided with a threaded through hole 3. The threaded through hole 3 is internally threaded with an adjustment threaded rod 4. The side end of the adjustment threaded rod 4 is rotatably connected to the side wall of the nitrogen replacement device body 1 through a bearing. The side wall of the nitrogen replacement device body 1 is fixedly connected to two No. 1 guide rods 5. The two No. 1 guide rods 5 penetrate and are slidably connected to the side wall of the bearing plate 2. The end of the adjustment threaded rod 4 away from the nitrogen replacement device body 1 is fixedly connected to a knob for easy use by staff.

[0024] The stabilizing assembly includes a fixing plate 6 fixedly connected to the side wall of the bearing plate 2, a bidirectional threaded rod 7 is provided on the side of the bearing plate 2, the bidirectional threaded rod 7 is rotatably connected to the bottom surface of the fixing plate 6 through a bearing, the side wall of the bearing plate 2 is fixedly connected to an annular plate 8 through a bracket, and the threaded sections of the bidirectional threaded rod 7 with opposite thread directions are threadedly connected with nuts 9, and the side walls of the two nuts 9 are fixedly connected to a connecting plate 10, two arc-shaped splints 11 are provided in the annular plate 8, and the outer side walls of the two arc-shaped splints 11 are fixedly connected with a connecting rod 12, and the two connecting rods 12 are slidably connected to the circumferential side walls of the annular plate 8, and the two connecting rods 12 are fixedly connected to the two connecting plates 10 respectively, and the limiting assembly includes a No. 2 guide rod fixedly connected to the upper surface of the fixing plate 6 13. A limit plate 14 is slidably sleeved on the No. 2 guide rod 13. The side wall of the limit plate 14 is fixedly connected to the side wall of the nut 9. The top of the two-way threaded rod 7 is fixedly connected with a knob for easy use by the staff. The two nuts 9 and the two connecting plates 10 are respectively located on the upper and lower sides of the annular plate 8. The annular plate 8 is concentrically arranged with the connecting pipe at the output end of the nitrogen replacement device body 1. The two arc-shaped clamping plates 11 are at the same vertical distance from the center of the annular plate 8, so that when the gas pipe is clamped and fixed later, synchronous movement can be achieved, and the fixed gas pipe and the connecting pipe at the output end of the nitrogen replacement device body 1 are also concentric. The two nuts 9, the connecting plate 10, the No. 2 guide rod 13 and the limit plate 14 are symmetrically arranged about the fixed plate 6.

[0025] The detailed working process of this utility model is as follows:

[0026] When a device is needed to safely replace the gas pipeline, the connection between the gas pipeline and the nitrogen replacement device body 1 is completed first. After the connection is completed, the connection tightness is further improved by using the connection tightness mechanism. After the connection is completed, the connected gas pipe is located in the annular plate 8 and between the two arc-shaped clamping plates 11. The two-way threaded rod 7 is rotated by the knob, and the two-way threaded rod 7 rotates. The two nuts 9 are restricted by the second guide rod 13 and the limit plate 14. They are threadedly engaged with the two-way threaded rod 7, and then move toward each other along the two-way threaded rod 7. The two arc-shaped clamping plates 11 are driven to move toward each other by the connecting plate 10 and the connecting rod 12. Here, the two arc-shaped clamping plates 11 need to be close to each other to complete the clamping and fixation of the connected gas pipe;

[0027] After completing the above, the adjusting threaded rod 4 is adjusted by turning the knob. Under the restriction of the two No. 1 guide rods 5, the threaded through hole 3 of the supporting plate 2 will engage with the adjusting threaded rod 4, thereby causing the supporting plate 2 and the adjusting threaded rod 4 to move relative to each other. The supporting plate 2 drives the annular plate 8 to move through the bracket, and then drives the gas pipe to move through the stabilizing component to reinforce its connection state and make the connection between it and the nitrogen replacement device body 1 tighter. Through further reinforcement, it is beneficial to improve the efficiency and effect of safe replacement of the gas pipeline, and also to improve the safety of the device.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A gas pipeline safety replacement device, characterized in that: include: Nitrogen replacement device body (1); A tight connection mechanism comprises an adjustment component, a stabilization component and two limit components, the adjustment component comprises a bearing plate (2) arranged on the side of a nitrogen replacement device body (1), the side wall of the bearing plate (2) is provided with a threaded through hole (3), an adjustment threaded rod (4) is internally threadedly connected to the threaded through hole (3), the side end of the adjustment threaded rod (4) is rotatably connected to the side wall of the nitrogen replacement device body (1) through a bearing, the side wall of the nitrogen replacement device body (1) is fixedly connected with two No. 1 guide rods (5), and the two No. 1 guide rods (5) penetrate and are slidably connected to the side wall of the bearing plate (2).

2. A gas pipeline safety replacement device according to claim 1, characterized in that: in: The stabilizing assembly comprises a fixing plate (6) fixedly connected to the side wall of the bearing plate (2); a bidirectional threaded rod (7) is provided on the side of the bearing plate (2); the bidirectional threaded rod (7) is rotatably connected to the bottom surface of the fixing plate (6) through a bearing; the side wall of the bearing plate (2) is fixedly connected to an annular plate (8) through a bracket; nuts (9) are threadedly connected to the threaded sections of the bidirectional threaded rod (7) with opposite thread directions; the side walls of the two nuts (9) are fixedly connected to a connecting plate (10); two arc-shaped clamping plates (11) are provided in the annular plate (8); the outer side walls of the two arc-shaped clamping plates (11) are fixedly connected to connecting rods (12); the two connecting rods (12) are slidably connected to the circumferential side walls of the annular plate (8), and the two connecting rods (12) are fixedly connected to the two connecting plates (10) respectively.

3. A gas pipeline safety replacement device according to claim 2, characterized in that: in: The limiting assembly includes a second guide rod (13) fixedly connected to the upper surface of the fixed plate (6), a limiting plate (14) slidably sleeved on the second guide rod (13), and a side wall of the limiting plate (14) is fixedly connected to the side wall of the nut (9).

4. A gas pipeline safety replacement device according to claim 2, characterized in that: in: The end of the adjusting threaded rod (4) away from the nitrogen replacement device body (1) is fixedly connected to a knob, and the top end of the bidirectional threaded rod (7) is fixedly connected to a knob.

5. A gas pipeline safety replacement device according to claim 2, characterized in that: in: The two nuts (9) and the two connecting plates (10) are respectively located on the upper and lower sides of the annular plate (8).

6. A gas pipeline safety replacement device according to claim 3, characterized in that: in: The two nuts (9), the connecting plate (10), the second guide rod (13) and the limiting plate (14) are all symmetrically arranged with respect to the fixing plate (6).

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