Protective device for additional construction of nitrogen pipeline

Abstract

The utility model relates to the technical field of energy-saving and emission-reducing equipment, in particular to a protective device for additional construction of a nitrogen pipeline, which comprises a shift converter and a shift gas pipe arranged on the inner wall of the shift converter, a first valve is arranged on the outer side of the shift gas pipe, a flange plate is arranged at one end of the shift gas pipe, and a second valve is arranged at the other end of the shift gas pipe. According to the conversion gas pipe disclosed by the utility model, gas separation and purification can be realized, the purity and the yield of a product are improved, so that the efficiency of the whole conversion and heat recovery process is improved, and the low-pressure nitrogen pipe is mainly used for collecting and conveying nitrogen generated in the conversion and heat recovery process; nitrogen can be recycled through the low-pressure nitrogen pipe, environmental pollution is reduced, meanwhile, cost is saved, the high-pressure nitrogen pipe is mainly used for conveying refrigerants and heating agents needed in the high-temperature conversion process, and the heat efficiency of the whole conversion and heat recycling process is improved through the high-pressure nitrogen pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of energy conservation and emission reduction equipment, in particular to a protection device for nitrogen pipeline addition construction. Background Technique

[0002] Nitrogen is a colorless, odorless, non-flammable and non-combustible gas with stable chemical properties and non-toxic to the human body. It is widely used in industrial production, scientific research experiments, medical and health care and other fields, mainly used for filling protective gas, welding protective gas, refrigerant, anesthetic, etc.

[0003] In the process of conversion and heat recovery, the selection of low-pressure nitrogen pipeline and high-pressure nitrogen pipeline is based on their physical properties and application scenarios. As a technical means of energy conservation and emission reduction, although conversion and heat recovery have many advantages, there are also certain disadvantages:

[0004] 1. High investment cost: The conversion and heat recovery equipment is usually expensive, which will increase the initial investment of the enterprise. For small-scale enterprises or individuals, it may be an unaffordable cost burden.

[0005] 2. High operation and maintenance cost: Due to the complex device, the operation and maintenance costs of the equipment will also increase accordingly, including equipment investment, personnel training and daily maintenance. Content of the Utility Model

[0006] The purpose of the utility model is to provide a protection device for nitrogen pipeline addition construction to solve the problems put forward in the above background technique.

[0007] To achieve the above purpose, the utility model provides the following technical scheme: A protection device for nitrogen pipeline addition construction, including a conversion furnace, further including:

[0008] A conversion gas pipe arranged on the inner wall of the conversion furnace, a first valve is arranged on the outer side of the conversion gas pipe, one end of the conversion gas pipe is provided with a flange, the inner wall of the flange is communicated with an external connecting pipe, and a check valve is arranged on the outer side of the external connecting pipe;

[0009] A low-pressure nitrogen pipeline communicated with the inner wall of the conversion gas pipe, a second valve and a first stop valve are respectively arranged on the outer side of the low-pressure nitrogen pipeline, and a first connecting pipe is communicated with the inner wall of the low-pressure nitrogen pipeline;

[0010] A high-pressure nitrogen pipeline communicated with the inner wall of the conversion gas pipe, a third valve and a second stop valve are respectively arranged on the outer side of the high-pressure nitrogen pipeline, and a second connecting pipe is communicated with the inner wall of the high-pressure nitrogen pipeline.

[0011] Preferably, a plurality of support rods are fixed at the bottom of the conversion furnace, and a support seat is fixed at the lower end of the support rods.

[0012] Preferably, a fixing ring is fixed on the outer side of the conversion gas pipe, and a connecting plate is fixed on the outer side of the fixing ring.

[0013] Preferably, a support plate is fixed at the bottom of the connecting plate, and a fixing plate is fixed at the top of the support plate.

[0014] Preferably, a connecting ring is fixed at the top of the fixing plate, and a fixing frame is fixed on the outer side of the connecting ring.

[0015] Preferably, a limiting plate is fixed on one side of the fixing frame, and limiting rings are fixed at both the upper end and the lower end of the limiting plate.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] The conversion gas pipe of the present utility model is mainly used to transfer gases generated during the conversion process, such as hydrogen, methane, etc. The main purpose of the conversion gas pipe is to transport the conversion gas and separate it into different components. By using the conversion gas pipe, the separation and purification of the gas can be achieved, the purity and yield of the product can be improved, thereby improving the efficiency of the entire conversion and heat recovery process. The low-pressure nitrogen gas pipe is mainly used to collect and transport the nitrogen gas generated during the conversion and heat recovery process. Since nitrogen gas is a by-product in many cases, it needs to be effectively recovered and utilized. By using the low-pressure nitrogen gas pipe, the recovery of nitrogen gas can be achieved, reducing environmental pollution and also saving costs. The high-pressure nitrogen gas pipe is mainly used to transport the refrigerant and heating agent required during the high-temperature conversion process. By using the high-pressure nitrogen gas pipe, the efficient transportation of the refrigerant and heating agent can be achieved, improving the thermal efficiency of the entire conversion and heat recovery process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a preferred embodiment of the protection device for nitrogen gas pipeline construction provided by the present utility model;

[0019] Figure 2 It is a schematic structural diagram of the conversion gas pipe provided by the present utility model;

[0020] Figure 3 It is a schematic structural diagram of the low-pressure nitrogen gas pipe and the high-pressure nitrogen gas pipe provided by the present utility model;

[0021] Figure 4 It is a schematic structural diagram of the connecting plate and the support plate provided by the present utility model.

[0022] In the figure: 1, converter; 2, conversion gas pipe; 3, first valve; 4, flange; 5, external connecting pipe; 6, check valve; 7, low-pressure nitrogen pipe; 8, second valve; 9, first stop valve; 10, first connecting pipe; 11, high-pressure nitrogen pipe; 12, third valve; 13, second stop valve; 14, second connecting pipe; 15, support rod; 16, support seat; 17, fixing ring; 18, connecting plate; 19, support plate; 20, fixing plate; 21, connecting ring; 22, fixing frame; 23, limiting plate; 24, limiting ring. Detailed implementation manners

[0023] To further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation manners, structures, features and their effects of the present utility model as follows.

[0024] Please refer to Figures 1 - 4As shown in the figure, a protective device for the construction of additional nitrogen pipelines includes a converter 1. Inside the inner wall of the converter 1, there is a conversion gas pipe 2. Outside the conversion gas pipe 2, there is a first valve 3, and the first valve 3 is located at the inlet of the conversion pipeline. Its function is to control the speed and flow rate of the conversion gas entering the converter to ensure the normal operation of the conversion process. At the same time, it can also maintain the stability of the pressure and temperature inside the converter by adjusting the opening degree. One end of the conversion gas pipe 2 is provided with a flange 4. The flange 4 is an important component for connecting pipelines. It can connect pipelines with different diameters and can also be used to change the direction of the pipeline. During the conversion and heat recovery process, the function of the flange 4 is to ensure the integrity of the conversion gas pipe 2 and prevent gas leakage. The inner wall of the flange 4 is connected to an external connecting pipe 5. Outside the external connecting pipe 5, there is a check valve 6. The external connecting pipe 5 is an important component for connecting the conversion gas pipe 2 with other equipment, including connectors, elbows, etc. The function of the external connecting pipe 5 is to ensure the connectivity of the conversion gas pipe 2 and facilitate the installation and maintenance of the equipment. The check valve 6 is a device to prevent the reverse flow of fluid. It allows the gas to flow only from one pipeline to another pipeline and not vice versa. During the conversion and heat recovery process, the function of the check valve 6 is to prevent the reverse flow of the conversion gas and cause damage to the equipment; a low-pressure nitrogen pipe 7 is connected to the inner wall of the conversion gas pipe 2. Outside the low-pressure nitrogen pipe 7, there are a second valve 8 and a first stop valve 9 respectively. By setting the second valve 8, it mainly plays the role of cutting off the supply of low-pressure nitrogen. It can be quickly closed in case of emergency to avoid the leakage of low-pressure nitrogen and ensure the safety of personnel. The inner wall of the low-pressure nitrogen pipe 7 is connected to a first connecting pipe 10. By setting the first connecting pipe 10, it can make a quick response when it is necessary to close the nitrogen pipeline, cut off the nitrogen supply in time, and ensure the safety of the equipment; a high-pressure nitrogen pipe 11 is connected to the inner wall of the conversion gas pipe 2. Outside the high-pressure nitrogen pipe 11, there are a third valve 12 and a second stop valve 13 respectively. The third valve 12 is mainly used to adjust the flow rate and pressure of the high-pressure nitrogen to keep it within the set range. This helps to ensure the normal operation of the conversion and heat recovery processes because the pressure and temperature in these two processes need to be precisely controlled. By adjusting the third valve 12, the second stop valve 13 is used to cut off the supply of the high-pressure nitrogen pipe 11 to ensure that when it is necessary to shut down a certain part of the work, the nitrogen supply can be quickly isolated to prevent nitrogen leakage and ensure the safety of the equipment and personnel. This is particularly important during the conversion and heat recovery processes because these two processes involve high-temperature and high-pressure environments. If nitrogen leaks, it may cause fires or other safety accidents and can effectively maintain the stability of these key parameters. The inner wall of the high-pressure nitrogen pipe 11 is connected to a second connecting pipe 14.

[0025] Multiple support rods 15 are fixed to the bottom of the converter 1, and a support base 16 is fixed to the lower end of the support rods 15; by setting the cooperation of the support rods 15 and the support base 16, it is convenient to support the main body.

[0026] A fixing ring 17 is fixedly arranged on the outer side of the conversion gas pipe 2, and a connecting plate 18 is fixedly arranged on the outer side of the fixing ring 17; by setting the combined use of the fixing ring 17 and the connecting plate 18, the stability of the conversion gas pipe 2 can be conveniently improved.

[0027] A supporting plate 19 is fixedly arranged at the bottom of the connecting plate 18, and a fixing plate 20 is fixedly arranged at the top of the supporting plate 19; by setting the combined use of the supporting plate 19 and the fixing plate 20, the connecting ring 21 can be conveniently fixed.

[0028] A connecting ring 21 is fixedly arranged at the top of the fixing plate 20, and a fixing frame 22 is fixedly arranged on the outer side of the connecting ring 21; by setting the combined use of the connecting ring 21 and the fixing frame 22, the limiting plate 23 can be conveniently fixed.

[0029] A limiting plate 23 is fixedly arranged on one side of the fixing frame 22, and limiting rings 24 are fixedly arranged at both the upper end and the lower end of the limiting plate 23; by setting the combined use of the limiting plate 23 and the limiting rings 24, the stability of the low-pressure nitrogen gas pipe 7 and the high-pressure nitrogen gas pipe 11 can be conveniently improved.

[0030] Working principle: First of all, the conversion gas pipe 2 is mainly used to transport hydrogen and helium. These two gases are the products of the conversion reaction and need to be rapidly cooled during the process. Therefore, a special conversion gas pipe 2 is required, which is usually made of stainless steel and has good heat resistance and corrosion resistance. The pressure of the conversion gas pipe 2 also needs to be very precisely controlled within a specific range to ensure the safety and efficiency of the conversion reaction. Secondly, the low-pressure nitrogen gas pipe 7 is mainly used to transport nitrogen gas. During the conversion and heat recovery process, nitrogen gas is an important protective gas, which can absorb heat during the reaction and help maintain the stability of the reaction medium. The pressure of the low-pressure nitrogen gas pipe 7 is usually between 1 and 2 bar, and the smooth flow of the gas and a stable pressure need to be ensured. Finally, the high-pressure nitrogen gas pipe 11 is the most critical part of the whole system and is used to transport high-pressure nitrogen gas to maintain the high-pressure environment during the conversion and heat recovery process. This kind of pipe is usually made of stainless steel or carbon steel and can withstand a pressure of up to 100 bar. During the process of transporting high-pressure nitrogen gas, special attention needs to be paid to the sealing and wear resistance of the pipe to ensure that the nitrogen gas does not leak and does not react with other media.

[0031] 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 technical content disclosed above. 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 according to 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 protective device for nitrogen pipeline expansion construction, comprising a shift furnace (1), characterized in that: Also includes: A conversion gas pipe (2) is arranged on the inner wall of the conversion furnace (1), a first valve (3) is arranged on the outer side of the conversion gas pipe (2), a flange (4) is arranged at one end of the conversion gas pipe (2), the inner wall of the flange (4) is connected to an external pipe (5), and a check valve (6) is arranged on the outer side of the external pipe (5); A low-pressure nitrogen pipe (7) connected to the inner wall of the conversion pipe (2), a second valve (8) and a first stop valve (9) being respectively arranged on the outer side of the low-pressure nitrogen pipe (7), and a first connecting pipe (10) being connected to the inner wall of the low-pressure nitrogen pipe (7); A high-pressure nitrogen pipe (11) is connected to the inner wall of the conversion gas pipe (2), a third valve (12) and a second stop valve (13) are respectively arranged on the outer side of the high-pressure nitrogen pipe (11), and the inner wall of the high-pressure nitrogen pipe (11) is connected to a second connecting pipe (14).

2. A protective device for nitrogen pipeline expansion construction according to claim 1, characterized in that: A plurality of support rods (15) are fixed to the bottom of the conversion furnace (1), and a support seat (16) is fixed to the lower end of the support rod (15).

3. A protective device for nitrogen pipeline expansion construction according to claim 1, characterized in that: A fixing ring (17) is fixed on the outer side of the conversion air pipe (2), and a connecting plate (18) is fixed on the outer side of the fixing ring (17).

4. A protective device for nitrogen pipeline expansion construction according to claim 3, characterized in that: A support plate (19) is fixed to the bottom of the connecting plate (18), and a fixing plate (20) is fixed to the top of the supporting plate (19).

5. A protective device for nitrogen pipeline expansion construction according to claim 4, characterized in that: A connecting ring (21) is fixed on the top of the fixing plate (20), and a fixing frame (22) is fixed on the outer side of the connecting ring (21).

6. A protective device for nitrogen pipeline expansion construction according to claim 5, characterized in that: A limiting plate (23) is fixed on one side of the fixing frame (22), and limiting rings (24) are fixed on both the upper and lower ends of the limiting plate (23).

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