Fuel gas pipeline rust removal device

Abstract

The utility model relates to a fuel gas pipeline rust removal device which comprises a liquid carbon dioxide tank and a solid rust remover tank, the output end of the liquid carbon dioxide tank is connected with a connecting pipe, and the upper portion and the bottom of the solid rust remover tank are connected with a first valve and a second valve respectively. The end, away from the liquid carbon dioxide tank, of the connecting pipe is connected with the first valve, the second valve is connected with a spraying pipe, and the end, away from the second valve, of the spraying pipe is provided with a spraying gun. Residual impurity rusty spots on the surface of the pipeline are condensed and embrittled, high-pressure airflow generated in the carbon dioxide spraying process drives a solid rust remover to be mixed to form cold and warm mist spray, the condensed and embrittled impurity rusty spots on the pipeline are impacted and peeled off, electric sparks are completely eradicated, safety is improved, and the service life of the pipeline is prolonged. And therefore, the rust removal treatment can be carried out on the rusted pipeline under the condition that gas supply is not stopped, and normal gas use of a user is prevented from being influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of rust removal equipment, and particularly relates to a rust removal device for gas pipelines. Background Art

[0002] In the treatment of potential hazards of gas pipeline corrosion, electric hot grinding rust removal is a relatively common process. Since heat is generated during the electric hot grinding process, the pipe body will heat up. While high temperature and heat are generated, there may also be safety risks caused by electric sparks. To avoid the occurrence of safety accidents, a gas shut-off process is required before grinding construction, and the rusty pipeline needs to be shut off before grinding operations can be carried out, which will affect the normal gas use of users. Content of the Utility Model

[0003] The purpose of the utility model is to design a rust removal device for gas pipelines to solve the problems mentioned in the background art.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A rust removal device for gas pipelines includes a liquid carbon dioxide tank and a solid rust remover tank. The output end of the liquid carbon dioxide tank is connected with a connecting pipe. The upper part and the bottom of the solid rust remover tank are respectively connected with a first valve and a second valve. The end of the connecting pipe far from the liquid carbon dioxide tank is connected with the first valve. A spraying pipe is connected to the second valve, and a spray gun is provided at the end of the spraying pipe far from the second valve.

[0006] Further, it also includes a bottom plate. The liquid carbon dioxide tank is installed on the top of the bottom plate. The bottom of the bottom plate is fixedly connected with a rotating shaft, and both ends of the rotating shaft are rotatably connected with rollers. On the opposite sides of the top of the bottom plate, support rods are fixedly connected. A support frame is fixedly connected between the two support rods, and the solid rust remover tank is installed on the support frame.

[0007] Furthermore, a hand pull handle is fixedly connected between the ends of the two support rods far from the bottom plate.

[0008] Furthermore, a support column is detachably connected to the hand pull handle, and a support plate is fixedly connected to the end of the support column far from the hand pull handle.

[0009] Furthermore, a support hole is provided on the hand pull handle, and an insertion rod adapted to the support hole is fixedly connected to the end of the support column close to the hand pull handle.

[0010] Further, a rubber pad is attached to the bottom of the support plate.

[0011] Further, both the first valve and the second valve are three-way valves, and a diversion pipe is connected between the first valve and the second valve.

[0012] Further, the solid rust remover filled inside the solid rust remover tank is emery.

[0013] Further, a feed pipe is provided at the top of the solid rust remover tank, and a pipe valve is installed on the feed pipe.

[0014] Further, a pressure gauge is installed at the output end of the liquid carbon dioxide tank.

[0015] The beneficial effects of the present utility model are as follows:

[0016] By utilizing the low-temperature characteristics of dry ice, the residual impurities, rust spots, etc. on the surface of the pipeline are quickly frozen, condensed and embrittled under the action of low temperature. The high-pressure air flow generated during the carbon dioxide spraying process drives the solid rust remover to form a cold spray, impacts the condensed and embrittled impurity rust spots on the pipeline and makes them peel off. In addition, by utilizing the low-temperature characteristics and fire extinguishing performance of dry ice, it is possible to prevent the pipeline from heating up due to grinding rust removal and eliminate the generation of electric sparks, improving safety. Furthermore, rust removal treatment can be carried out without stopping the gas supply to the rusty pipeline, avoiding affecting the normal gas use of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is a schematic structural diagram of the present utility model;

[0019] Figure 2 is a schematic structural diagram of another perspective of the present utility model.

[0020] The names of the components marked in the figure are as follows:

[0021] Liquid carbon dioxide tank; 2, solid rust remover tank; 3, connecting pipe; 4, first valve; 5, second valve; 6, spraying pipe; 7, spray gun; 8, bottom plate; 9, rotating shaft; 10, roller; 11, support rod; 12, support frame; 13, hand pull handle; 14, support column; 15, support plate; 16, support hole; 17, insertion rod; 18, diversion pipe; 19, feed pipe; 20, pressure gauge. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] To further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following describes in detail the specific implementation manners, structures, features and their effects of the present utility model in conjunction with the accompanying drawings and preferred embodiments.

[0023] As Figure 1-2 shown, a rust removal device for gas pipelines includes a liquid carbon dioxide tank body 1, a solid rust remover tank body 2 and a bottom plate 8. The liquid carbon dioxide tank body 1 is installed on the top of the bottom plate 8. Support rods 11 are fixedly connected to opposite sides of the top of the bottom plate 8. A support frame 12 is fixedly connected between the two support rods 11. The solid rust remover tank body 2 is installed on the support frame 12. A rotating shaft 9 is fixedly connected to the bottom of the bottom plate 8. Roller wheels 10 are rotatably connected to both ends of the rotating shaft 9, enabling the bottom plate 8 to move, and thus making it more convenient to transfer the liquid carbon dioxide tank body 1 and the solid rust remover tank body 2; A hand pull handle 13 is fixedly connected between the ends of the two support rods 11 away from the bottom plate 8, and the bottom plate 8 can be pulled to move through the hand pull handle 13, with good convenience; A support column 14 is detachably connected to the hand pull handle 13. A support hole 16 is provided on the hand pull handle 13. A plug rod 17 adapted to the support hole 16 is fixedly connected to the end of the support column 14 close to the hand pull handle 13, and the hand pull handle 13 can be supported by the support column 14, so that when the rust removal device is performing rust removal operations, the liquid carbon dioxide tank body 1 and the solid rust remover tank body 2 are prevented from contacting the ground; A support plate 15 is fixedly connected to the end of the support column 14 away from the hand pull handle 13, increasing the contact area and improving the stability of the rust removal device during the rust removal operation; A rubber pad is attached to the bottom of the support plate 15, increasing the friction force and further improving the stability of the rust removal device during the rust removal operation;

[0024] The output end of the liquid carbon dioxide tank body 1 is connected to a connecting pipe 3, and a pressure gauge 20 is installed at the output end of the liquid carbon dioxide tank body 1 to detect whether the internal pressure of the liquid carbon dioxide tank body 1 is normal to ensure that it can be used normally; the solid rust remover filled in the solid rust remover tank body 2 is corundum, and a feed pipe 19 is provided on the top of the solid rust remover tank body 2, and a pipe valve is installed on the feed pipe 19. By opening the pipe valve, diamond can be added to the interior of the solid rust remover tank body 2 through the feed pipe 19; the upper and bottom parts of the solid rust remover tank body 2 are respectively connected to a first valve 4 and a second valve 5, and the end of the connecting pipe 3 away from the liquid carbon dioxide tank body 1 is connected to the first valve 4, and the second valve 5 is connected to the bottom part of the solid rust remover tank body 2. The second valve 5 is connected to a spray pipe 6, and a spray gun 7 is provided at one end of the spray pipe 6 away from the second valve 5, so that a passage is formed between the liquid carbon dioxide tank body 1 and the solid rust remover tank body 2, and the carbon dioxide in the liquid carbon dioxide tank body 1 will enter the solid rust remover tank body 2, and drive the corundum to flow out of the spray pipe 6, and finally be sprayed out through the spray gun 7 to perform the rust removal operation; the first valve 4 and the second valve 5 are both three-way valves, and a diversion pipe 18 is connected between the first valve 4 and the second valve 5. The diversion pipe 18 can prevent the corundum in the solid rust remover tank body 2 from clogging the second valve 5, so that the carbon dioxide can drive the corundum to flow into the spray pipe 6 through the second valve 5.

[0025] Working principle:

[0026] like Figure 1-2 As shown, when the rust removal device is in use, the rust removal device is first pulled by the hand handle 13 to move to the gas pipeline that needs to be rusted, and then the insertion rod 17 of the support column 14 is inserted into the support hole 16 of the hand handle 13 to support and fix the rust removal device;

[0027] Then slowly open the output end of the liquid carbon dioxide tank body 1, and check whether the internal pressure of the liquid carbon dioxide tank body 1 is normal by observing the pressure gauge 20 to ensure that it can be used normally. After ensuring that the liquid carbon dioxide tank body 1 can be used normally, open the first valve 4 and the second valve 5, and pick up the spray gun 7 and aim it at the rusted gas pipeline. The carbon dioxide in the liquid carbon dioxide tank body 1 will enter the solid rust remover tank body 2, and drive the corundum to flow out from the spray pipe 6, and finally be sprayed out through the spray gun 7. By utilizing the low temperature characteristics of dry ice, the impurities and rust spots remaining on the surface of the pipeline are quickly frozen, and condensed and brittle under the action of low temperature. The high-pressure airflow generated during the carbon dioxide injection process drives the corundum to mix and form a cold spray, which impacts the condensed and brittle impurities and rust spots on the pipeline and causes them to peel off. The low temperature characteristics and fire extinguishing performance of dry ice are used to prevent the pipeline from heating up due to grinding and rust removal, and to prevent the generation of electric sparks, thereby improving safety, thereby achieving rust removal treatment on the rusted pipeline without the need to stop the gas.

[0028] The above are only the preferred embodiments of the present utility model, and do not impose any formal limitations on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to equivalent embodiments with equivalent changes within the scope of the technical solution of the present utility model by using the above-disclosed technical content. However, as long as it does not depart from the content of the technical solution of the present utility model, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A device for removing rust from gas pipelines, characterized in that, It includes a liquid carbon dioxide tank (1) and a solid rust remover tank (2). The output end of the liquid carbon dioxide tank (1) is connected with a connecting pipe (3). The upper part and the bottom of the solid rust remover tank (2) are respectively connected with a first valve (4) and a second valve (5). The end of the connecting pipe (3) far away from the liquid carbon dioxide tank (1) is connected with the first valve (4). A spraying pipe (6) is connected to the second valve (5), and a spray gun (7) is provided at the end of the spraying pipe (6) far away from the second valve (5).

2. The gas pipeline rust removal device according to claim 1, wherein It further includes a bottom plate (8). The liquid carbon dioxide tank (1) is installed on the top of the bottom plate (8). A rotating shaft (9) is fixedly connected to the bottom of the bottom plate (8). Two rollers (10) are rotatably connected to both ends of the rotating shaft (9). Support rods (11) are fixedly connected to the opposite sides of the top of the bottom plate (8). A support frame (12) is fixedly connected between the two support rods (11). The solid rust remover tank (2) is installed on the support frame (12).

3. The gas pipeline rust removal device according to claim 2, characterized in that, A hand pull handle (13) is fixedly connected between the ends of the two support rods (11) far away from the bottom plate (8).

4. The rust removal device for gas pipelines according to claim 3, wherein, A support column (14) is detachably mounted on the hand pull handle (13). A support plate (15) is fixedly connected to the end of the support column (14) far away from the hand pull handle (13).

5. The gas pipeline rust removal device according to claim 4, characterized in that, A support hole (16) is provided on the hand pull handle (13). A plug rod (17) adapted to the support hole (16) is fixedly connected to the end of the support column (14) close to the hand pull handle (13).

6. The gas pipeline rust removal device according to claim 4, characterized in that, A rubber pad is pasted on the bottom of the support plate (15).

7. The gas pipeline rust removal device according to claim 1, wherein, Both the first valve (4) and the second valve (5) are three-way valves, and a diversion pipe (18) is connected between the first valve (4) and the second valve (5).

8. The gas pipeline rust removal device according to claim 1, characterized in that, The solid rust remover filled inside the solid rust remover tank (2) is emery.

9. The gas pipeline rust removal device according to claim 1, characterized in that, A feed pipe (19) is provided at the top of the solid rust remover tank (2), and a pipe valve is installed on the feed pipe (19).

10. The gas pipeline rust removal device according to claim 1, characterized in that, A pressure gauge (20) is installed at the output end of the liquid carbon dioxide tank (1).

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