Safe replacement device for gas pipeline

Abstract

The utility model discloses a gas pipeline safety replacement device, and relates to the field of gas pipeline safety replacement devices. A gas pipeline safety replacement device comprises a two-way threaded rod connected to a fixing plate in a penetrating mode, one side of the two-way threaded rod is in threaded connection with a first anti-loosening jacking and fixing plate, and the other side of the two-way threaded rod is in threaded connection with a second anti-loosening jacking and fixing plate; the forward rotation bidirectional threaded rod drives the first anti-loosening jacking and fixing plate and the second anti-loosening jacking and fixing plate to be far away from each other and abut against the first nut and the second nut respectively, the connection stability is enhanced, relative displacement and loosening between parts are effectively prevented, and the service life of the nut is prolonged. And meanwhile, a first air bag and a second air bag on the first nut and the second nut can enter a first circular ring groove and a second circular ring groove formed in a first anti-loose top fixing plate and a second anti-loose top fixing plate, and expand under pressure, so that the sealing performance of the first nut and the second nut is enhanced, gas leakage is prevented, and insufficient ventilation is avoided.

Description

Technical Field

[0001] This utility model belongs to the technical field of gas pipeline safety replacement devices, specifically, it relates to a gas pipeline safety replacement device. Background Technology

[0002] When gas pipelines are newly built, renovated, repaired, or put back into use after a long period of inactivity, air, impurities, or other non-flammable gases may be present inside. If gas is directly introduced into a pipeline containing air, the resulting gas-air mixture can easily explode under certain conditions (such as exposure to open flames or static electricity), posing a significant safety hazard. Therefore, safety purging of gas pipelines requires replacing the air and other non-flammable gases inside with inert gases to ensure the safety of gas delivery and use.

[0003] When traditional ventilation devices are connected to gas pipelines, the connection is prone to loosening due to vibration or external force, resulting in gaps at the connection. This leads to insufficient ventilation, which can cause many safety hazards and adverse effects when gas is reintroduced.

[0004] Therefore, in response to this problem, this utility model proposes a gas pipeline safety replacement device. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a gas pipeline safety replacement device that can overcome or at least partially solve the above problems.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows: a gas pipeline safety replacement device, including a connecting pipe connected to a gas pipe and a gas filling pipe, and further including: a fixing plate, fixedly connected to the connecting pipe; a bidirectional threaded rod, rotatably connected to the fixing plate, one end of the bidirectional threaded rod being threadedly connected to a first anti-loosening top plate, and the other end of the bidirectional threaded rod being threadedly connected to a second anti-loosening top plate, both the first anti-loosening top plate and the second anti-loosening top plate being slidably connected to the connecting pipe.

[0007] The adapter pipe is slidably connected to a first nut and a second nut on both sides. The first nut and the second nut are threadedly connected to the gas pipe and the inflation pipe, respectively. The first anti-loosening top plate and the second anti-loosening top plate are used to hold the first nut and the second nut in place.

[0008] Preferably, a gas pipe is threaded into the first nut, and a first valve is fixedly connected to the gas pipe.

[0009] Preferably, the second nut is threaded with an inflation tube, and a second valve is fixedly connected to the inflation tube.

[0010] Preferably, limit blocks are fixedly connected to the two ends of the bidirectional threaded rod near the fixed plate, and anti-slip textures are provided on both sides of the bidirectional threaded rod.

[0011] Preferably, the first anti-loosening top plate has a first annular groove on the side near the first airbag, and the second anti-loosening top plate has a second annular groove on the side near the second airbag.

[0012] Preferably, both the first nut and the second nut have anti-slip textures.

[0013] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: The present invention uses a forward-rotating bidirectional threaded rod to drive the first anti-loosening top plate and the second anti-loosening top plate to move away from each other and abut against the first nut and the second nut respectively, which enhances the stability of the connection and effectively prevents relative displacement and loosening between components. At the same time, the first air bladder and the second air bladder on the first nut and the second nut will enter the first annular groove and the second annular groove opened on the first anti-loosening top plate and the second anti-loosening top plate, and expand under pressure to enhance the sealing of the first nut and the second nut, prevent gas leakage, and avoid insufficient ventilation.

[0014] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0015] In the attached diagram:

[0016] Figure 1 This is a schematic diagram of the structure of a gas pipeline safety replacement device proposed in this utility model;

[0017] Figure 2 This is a cross-sectional view of the first nut in a gas pipeline safety replacement device proposed in this utility model;

[0018] Figure 3 This is a cross-sectional view of the second nut in a gas pipeline safety replacement device proposed in this utility model;

[0019] Figure 4 This is a cross-sectional view of the bidirectional threaded rod in a gas pipeline safety replacement device proposed in this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the first airbag in a gas pipeline safety replacement device proposed in this utility model.

[0021] Figure 6 This is a schematic diagram of the structure of the second airbag in a gas pipeline safety replacement device proposed in this utility model.

[0022] In the diagram: 1. Adapter pipe; 11. First nut; 12. Second nut; 13. First airbag; 14. Second airbag; 2. Fixing plate; 21. First anti-loosening top plate; 22. Second anti-loosening top plate; 23. Two-way threaded rod; 24. Limiting block; 3. Gas pipe; 31. Inflation pipe; 32. First valve; 33. Second valve; 34. First annular groove; 35. Second annular groove. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0024] Example 1: Refer to Figures 1-6 A gas pipeline safety replacement device includes a connecting pipe 1 connected to a gas pipe 3 and an inflator pipe 31, and further includes: a fixing plate 2 fixedly connected to the connecting pipe 1; a bidirectional threaded rod 23 rotatably connected to the fixing plate 2, one end of the bidirectional threaded rod 23 being threadedly connected to a first anti-loosening top plate 21, and the other end of the bidirectional threaded rod 23 being threadedly connected to a second anti-loosening top plate 22, both the first anti-loosening top plate 21 and the second anti-loosening top plate 22 being slidably connected to the connecting pipe 1; a first nut 11 and a second nut 12 are slidably connected to both sides of the connecting pipe 1, the first nut 11 and the second nut 12 being threadedly connected to the gas pipe 3 and the inflator pipe 31 respectively, and the first anti-loosening top plate 21 and the second anti-loosening top plate 22 being used to abut against the first nut 11 and the second nut 12.

[0025] The first nut 11 is fixedly connected to the first airbag 13 on the side near the first anti-loosening top plate 21, and the second nut 12 is fixedly connected to the second airbag 14 on the side near the second anti-loosening top plate 22.

[0026] The first nut 11 is threadedly connected to a gas pipe 3, and a first valve 32 is fixedly connected to the gas pipe 3.

[0027] The second nut 12 is threadedly connected to an air inlet tube 31, and a second valve 33 is fixedly connected to the air inlet tube 31.

[0028] Limiting blocks 24 are fixedly connected to the two ends of the bidirectional threaded rod 23 near the fixed plate 2, and anti-slip textures are provided on both sides of the bidirectional threaded rod 23.

[0029] The first anti-loosening top plate 21 has a first annular groove 34 on the side near the first airbag 13, and the second anti-loosening top plate 22 has a second annular groove 35 on the side near the second airbag 14.

[0030] Both the first nut 11 and the second nut 12 have anti-slip grooves.

[0031] This invention connects the first nut 11 of the device to the gas pipe 3 to be replaced by thread, and then connects the second nut 12 to the inflation pipe 31 that emits inert gas by thread. Subsequently, the bidirectional threaded rod 23 is rotated, which drives the first anti-loosening top plate 21 to move toward the first nut 11 and the second anti-loosening top plate 22 to move toward the second nut 12. When the first anti-loosening top plate 21 and the second anti-loosening top plate 22 abut against the first nut 11 and the second nut 12 respectively, the stability of the connection is enhanced, preventing relative displacement or loosening between the components and making the entire structure more stable. At the same time, the first airbag 13 and the second airbag 14 will enter the first annular groove 34 and the second annular groove 35 respectively and expand and deform under pressure, which can better fill the gaps, thereby enhancing the sealing effect of the first nut 11 and the second nut 12. When the abutment is completed, the rotation of the bidirectional threaded rod 23 is stopped, and the first valve 32 and the second valve 33 are opened, allowing the inert gas to enter the gas pipe 3 to be replaced from the inflation pipe 31.

[0032] When the gas replacement is complete, close the first valve 32 and the second valve 33, rotate the double-threaded rod 23 to bring the first anti-loosening top plate 21 and the second anti-loosening top plate 22 closer together so that they no longer contact the first nut 11 and the second nut 12. Then rotate the first nut 11 and the second nut 12 to detach the device from the gas filling pipe 31 and the gas pipe 3, and then the device can be removed.

[0033] This device, by rotating the bidirectional threaded rod 23, causes the first anti-loosening top plate 21 and the second anti-loosening top plate 22 to move away from each other, respectively contacting the first nut 11 and the second nut 12, thus enhancing the stability of the connection and effectively preventing relative displacement and loosening between components. Simultaneously, the first airbag 13 and the second airbag 14 on the first nut 11 and the second nut 12 will enter...

[0034] The first annular groove 34 and the second annular groove 35 opened on the first anti-loosening top plate 21 and the second anti-loosening top plate 22 are expanded under pressure to enhance the sealing of the first nut 11 and the second nut 12, prevent gas leakage, and avoid insufficient ventilation.

[0035] In another embodiment, the first nut 11 and the second nut 12 are provided with multiple grooves at the ends near the fixing plate 2. The first anti-loosening top plate 21 and the second anti-loosening top plate 22 are fixedly connected with multiple protrusions at the ends near the first nut 11 and the second nut 12. When the first anti-loosening top plate 21 and the second anti-loosening top plate 22 abut against the first nut 11 and the second nut 12, the protrusions and grooves engage, which further increases the connectivity of the first anti-loosening top plate 21, the second anti-loosening top plate 22 and the first nut 11 and the second nut 12 and prevents relative rotation and displacement, so that they form a relatively fixed whole.

[0036] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A gas pipeline safety replacement device, comprising a transfer pipe (1) connected to a gas pipe (3) and a gas filling pipe (31), characterized in that, Also includes: The fixing plate (2) is fixedly connected to the adapter pipe (1); A bidirectional threaded rod (23) is rotatably connected to the fixed plate (2). One end of the bidirectional threaded rod (23) is threadedly connected to a first anti-loosening top plate (21), and the other end of the bidirectional threaded rod (23) is threadedly connected to a second anti-loosening top plate (22). The first anti-loosening top plate (21) and the second anti-loosening top plate (22) are both slidably connected to the adapter pipe (1). The adapter pipe (1) is slidably connected to a first nut (11) and a second nut (12) on both sides. The first nut (11) and the second nut (12) are threadedly connected to the gas pipe (3) and the air filling pipe (31) respectively. The first anti-loosening top plate (21) and the second anti-loosening top plate (22) are used to abut against the first nut (11) and the second nut (12).

2. The gas pipeline safety replacement device according to claim 1, characterized in that, The first nut (11) is fixedly connected to the first airbag (13) on the side near the first anti-loosening top plate (21), and the second nut (12) is fixedly connected to the second airbag (14) on the side near the second anti-loosening top plate (22).

3. A gas pipeline safety replacement device according to claim 2, characterized in that, A first valve (32) is fixedly connected to the gas pipe (3).

4. A gas pipeline safety replacement device according to claim 2, characterized in that, A second valve (33) is fixedly connected to the inflation pipe (31).

5. A gas pipeline safety replacement device according to claim 1, characterized in that, Limiting blocks (24) are fixedly connected to the two ends of the bidirectional threaded rod (23) near the fixed plate (2), and anti-slip textures are provided on both sides of the bidirectional threaded rod (23).

6. A gas pipeline safety replacement device according to claim 2, characterized in that, The first anti-loosening top plate (21) has a first annular groove (34) on the side near the first airbag (13), and the second anti-loosening top plate (22) has a second annular groove (35) on the side near the second airbag (14).

7. A gas pipeline safety replacement device according to claim 1, characterized in that, Both the first nut (11) and the second nut (12) have anti-slip textures.

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