Material conveying pressure stabilizing assembly and material conveying system
By introducing pressure relief pipes and low-pressure regulating devices into the chemical product transportation system, the problem of increased pipeline pressure caused by the volatilization of chemical product residues was solved, a stable low-pressure environment was achieved, flange connection leakage was prevented, and transportation safety was improved.
Patent Information
- Application Number
- CN202520505666.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-21
AI Technical Summary
Chemical products remaining in the pipeline and volatilizing upon heating can increase pipeline pressure and potentially cause leaks at flange connections, posing a safety hazard.
Design a material conveying pressure stabilizing component, including a pressure relief pipe and a low-pressure regulating device. The pressure relief pipe is connected to the storage tank and the discharge pipe. The low-pressure regulating device maintains a low-pressure environment in the storage tank. The pressure relief pipe returns raw materials and gas to the storage tank to prevent excessive pressure in the pipeline.
It effectively avoids pressure increases caused by the volatilization of chemical products in pipelines, prevents leakage at flange connections, and improves transportation safety.
Smart Images
Figure CN223924546U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of high-pressure equipment pressure relief technology, and in particular to a material conveying pressure stabilizing component and a material conveying system. Background Technology
[0002] Fine chemical products mostly involve Class A and B solvent storage areas, which are primarily used to store Class A and B raw materials or solvents. These solvents and raw materials are transported to various equipment via pipelines, typically made of 304 stainless steel. Due to the length of the pipelines and even the height difference between the storage tanks and the production workshop, pumps are used for material transport. After transport, the pumps are stopped and the valves on the relevant pipelines are closed. This leaves a large amount of material residue inside the pipelines. When exposed to sunlight, the temperature inside the pipelines rises, causing the residue to evaporate and generate vapor pressure. If the pipeline pressure exceeds 0.8 MPa, leaks may occur at the gaskets of the pipeline flange connections, posing a significant safety hazard. Utility Model Content
[0003] This utility model provides a material conveying pressure stabilizing component and a material conveying system to solve the defects in the prior art where chemical raw materials are easily left in the conveying pipeline, volatilize after being heated in the pipeline, and the increased pipeline pressure eventually leads to leakage of raw materials from the gasket at the pipeline flange connection.
[0004] In a first aspect, this utility model provides a material conveying and pressure stabilizing component, which is configured to be connected to a storage tank, comprising:
[0005] A pressure relief pipe is provided at both ends, with a first port and a second port respectively. The first port is connected to the inner cavity of the storage tank, and the second port is connected to the discharge pipe of the storage tank.
[0006] A low-pressure regulating device is configured to communicate with the inner cavity of the storage tank, and the low-pressure regulating device is used to regulate the gas pressure inside the storage tank.
[0007] According to the material conveying pressure stabilizing assembly of this utility model, a pressure relief valve is provided on the pressure relief pipe, and the pressure relief valve is used to adjust the opening degree of the pressure relief pipe.
[0008] According to the material conveying and pressure stabilizing assembly of this utility model, the first port is configured to be located at the top of the storage tank.
[0009] According to the material conveying and pressure stabilizing assembly of this utility model, the second port is configured to be located on the lower side of the side wall of the discharge pipe.
[0010] According to the material conveying pressure stabilizing assembly of this utility model, the diameter of the pressure relief pipe is configured to be greater than or equal to 1 / 4 of the diameter of the discharge pipe and less than or equal to 1 / 3 of the diameter of the discharge pipe.
[0011] According to the material conveying pressure stabilizing component of this utility model, the low-pressure regulating device includes a low-pressure gas supplier and a breather valve. The low-pressure gas supplier is connected to the inner cavity of the storage tank to introduce low-pressure protective gas into the inner cavity of the storage tank. The storage tank is also provided with a pressure relief port connected to the inner cavity, and the breather valve is located at the pressure relief port.
[0012] According to the material conveying and pressure stabilizing assembly of this utility model, the low-pressure gas supplier is a nitrogen supplier.
[0013] The material conveying pressure stabilizing component according to this utility model also includes a drain pipe and a drain valve. The pressure relief pipe is also provided with a third port. The drain pipe and the third port are connected. The drain valve is disposed on the drain pipe.
[0014] Secondly, this utility model also provides a material conveying system, comprising:
[0015] Storage tank, discharge pipe, and material conveying and pressure stabilizing assembly as described in any of the above;
[0016] The inner cavity of the storage tank is connected to the discharge pipe; both ends of the pressure relief pipe are connected to the inner cavity of the storage tank and the discharge pipe, respectively; the low-pressure regulating device is connected to the inner cavity of the storage tank.
[0017] According to the material conveying system of this utility model, the gas pressure inside the storage tank is greater than or equal to 3 kPa and less than or equal to 5 kPa.
[0018] This utility model's material conveying pressure stabilizing component, through the installation of a low-pressure regulating device connected to the storage tank, enables the formation of a stable low-pressure environment within the tank. Simultaneously, the storage tank and the discharge pipe are connected via a pressure relief pipe. When the valve on the discharge pipe is closed, the storage tank and the discharge pipe remain connected. If the gas pressure in the pressure relief pipe is too high, the raw materials and gas in the pipe can flow back into the storage tank, preventing the raw materials in the pressure relief pipe from evaporating and causing excessive gas pressure, thus avoiding safety hazards. This effectively solves the defect in the prior art where chemical raw materials easily remain in the conveying pipeline, evaporate after heating in the pipeline, and the increased pipeline pressure eventually leads to leakage of raw materials from the gasket at the pipeline flange connection. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the material conveying system provided in an embodiment of the present invention.
[0021] Figure 2 yes Figure 1 A schematic diagram of the longitudinal section of part M is shown.
[0022] Figure label:
[0023] 1. Material conveying pressure stabilizing components;
[0024] 11. Pressure relief pipe; 111. Pressure relief valve; 12. Low-pressure regulating device; 121. Low-pressure gas supplier; 122. Breather valve; 13. Drain pipe; 131. Drain valve;
[0025] 2. Storage tank; 3. Discharge pipe; 4. Feed pipe; 5. Reactor; 6. Transfer pump. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0027] The following is combined Figures 1-2 This invention describes a material conveying and pressure stabilizing component.
[0028] like Figure 1 As shown, this utility model provides a material conveying pressure stabilizing component 1, which is configured to communicate with a storage tank 2. The component includes a pressure relief pipe 11 and a low-pressure regulating device 12. The pressure relief pipe 11 has a first port and a second port at its two ends. The first port is configured to communicate with the inner cavity of the storage tank 2, and the second port is configured to communicate with the discharge pipe 3 of the storage tank 2. The low-pressure regulating device 12 is configured to communicate with the inner cavity of the storage tank 2 and is used to regulate the air pressure inside the storage tank 2.
[0029] It is understood that the material conveying and pressure stabilizing assembly 1 of this application is typically used in conveying systems containing chemical raw materials. Specifically, these conveying systems typically have a storage tank 2 and a discharge pipe 3 connected to the storage tank 2. The storage tank 2 is used to store chemical raw materials, and the raw materials are conveyed to the corresponding production reaction vessel (such as a reactor 5) through the discharge pipe 3 for reaction. In order to control the amount of raw materials conveyed, a valve is usually installed on the discharge pipe 3.
[0030] In this embodiment, a pressure relief pipe 11 is installed between the storage tank 2 and the discharge pipe 3. After the storage tank 2 has finished feeding material and the valve on the discharge pipe 3 is closed, the pressure relief pipe 11 can still maintain the connection between the discharge pipe 3 and the pressure relief pipe 11, so that the residual raw material or the gas generated by the volatilization of raw material in the discharge pipe 3 can flow back to the storage tank 2 through the pressure relief pipe 11. At the same time, a low-pressure regulating device 12 connected to the inner cavity of the storage tank 2 is installed. The low-pressure regulating device 12 is used to regulate the air pressure in the storage tank 2, so that the air pressure in the storage tank 2 is maintained in a low-pressure environment. Since the storage tank 2 and the discharge pipe 3 are connected through the pressure relief pipe 11, when the air pressure in the discharge pipe 3 increases, the gas and residual raw material in the discharge pipe 3 will flow back into the storage tank 2 under the action of pressure difference, thereby controlling the air pressure in the discharge pipe 3 within a certain range and improving the stability of the air pressure in the discharge pipe 3.
[0031] The material conveying pressure stabilizing component 1 of this utility model, through the setting of a low-pressure regulating device 12 connected to the storage tank 2, enables a stable low-pressure environment to be formed inside the storage tank 2. At the same time, the storage tank 2 and the discharge pipe 3 are connected through a pressure relief pipe 11. When the valve of the discharge pipe 3 is closed, the storage tank 2 and the discharge pipe 3 remain connected. When the air pressure in the pressure relief pipe 11 is too high, the raw materials and gas in the pipe can flow back into the storage tank 2, avoiding the raw materials in the pressure relief pipe 11 from evaporating and causing the air pressure to be too high, which would create a safety hazard. This effectively solves the defect in the prior art that chemical product raw materials are easy to remain in the conveying pipeline, evaporate after being heated in the pipeline, and eventually cause the raw materials to leak from the gasket of the pipeline flange connection due to increased pipeline pressure.
[0032] In some embodiments, such as Figure 1 As shown, a pressure relief valve 111 is provided on the pressure relief pipe 11, and the pressure relief valve 111 is used to adjust the opening degree of the pressure relief pipe 11.
[0033] In this embodiment, a pressure relief valve 111 is installed on the pressure relief pipe 11 to adjust the opening of the pipe, thereby adjusting the flow rate in the pressure relief pipe 11, so as to better cooperate with the storage tank 2 and the discharge pipe 3 to achieve the functions of pressure relief and material feeding.
[0034] Specifically, in some embodiments, such as Figure 1 As shown, the first port is configured to be located at the top of the storage tank 2.
[0035] In this embodiment, by setting the first pipe opening at the top of the storage tank 2, the raw materials in the storage tank 2 are prevented from overflowing the first pipe opening, thus preventing the raw materials from flowing back into the pressure relief pipe 11 from the first pipe opening or blocking the pressure relief pipe 11 and affecting the pressure relief function of the pressure relief pipe 11.
[0036] Specifically, in some embodiments, such as Figure 1 and Figure 2 As shown, the second port is configured to be located on the lower side of the side wall of the discharge pipe 3.
[0037] In this embodiment, by setting the second port on the lower side of the side wall of the discharge pipe 3, the raw material remaining in the discharge pipe 3 can flow into the second port and enter the pressure relief pipe 11, and then flow back into the storage tank 2 under the action of pressure difference.
[0038] Furthermore, in some embodiments, the diameter of the pressure relief pipe 11 is configured to be greater than or equal to 1 / 4 of the diameter of the discharge pipe 3, and less than or equal to 1 / 3 of the diameter of the discharge pipe 3.
[0039] In this embodiment, by setting the diameter of the pressure relief pipe 11 to 1 / 4 to 1 / 3 of the diameter of the discharge pipe 3, the flow rate in the pressure relief pipe 11 is controlled so that the fluid flow rate in the pressure relief pipe 11 can meet the pressure relief requirements of the pipeline. At the same time, the overall volume of the pressure relief pipe 11 can also be controlled so that the fluid in the pressure relief pipe 11 can flow back to the storage tank 2 under the action of the pressure difference between the storage tank 2 and the discharge pipe 3.
[0040] Furthermore, the opening of the entire pipeline can be controlled in conjunction with the pressure relief valve 111, so that the pressure difference between the storage tank 2 and the discharge pipe 3 can drive the fluid in the pressure relief pipe 11 to flow back to the storage tank 2. Specifically, the valve opening of the pressure relief valve 111 can be maintained at 1 / 3.
[0041] Specifically, in some embodiments, such as Figure 1 As shown, the low-pressure regulating device 12 includes a low-pressure gas supplier 121 and a breather valve 122. The low-pressure gas supplier 121 is connected to the inner cavity of the storage tank 2 to introduce low-pressure protective gas into the inner cavity of the storage tank 2. The storage tank 2 is also provided with a pressure relief port connected to the inner cavity, and the breather valve 122 is located at the pressure relief port.
[0042] In this embodiment, the low-pressure gas supplier 121 is used to supply low-pressure protective gas to the storage tank 2. The low-pressure protective gas can protect the raw materials in the storage tank 2. At the same time, by opening a pressure relief port on the storage tank 2 and installing a breather valve 122 on the pressure relief port, the breather valve 122 can work with the low-pressure gas supplier 121 to maintain a low-pressure environment in the storage tank 2 and prevent the internal pressure of the storage tank 2 from being too high.
[0043] Specifically, in some embodiments, the low-pressure gas supplier 121 is a nitrogen supplier, which is used to supply low-pressure nitrogen to the storage tank 2 to maintain a low-pressure environment inside the storage tank 2.
[0044] In some embodiments, such as Figure 1 As shown, the material conveying pressure stabilizing assembly 1 also includes a drain pipe 13 and a drain valve 131. The pressure relief pipe 11 is also provided with a third port. The drain pipe 13 and the third port are connected. The drain valve 131 is installed on the drain pipe 13.
[0045] In this embodiment, a drain pipe 13 is connected to the pressure relief pipe 11, and a drain valve 131 is installed on the drain pipe 13. The drain valve 131 is used to control the opening of the drain pipe 13. When the storage tank 2, the discharge pipe 3, and the pressure relief pipe 11 are feeding and depressurizing normally, the drain valve 131 remains closed. The drain pipe 13 will not affect the operation of other components. When the entire conveying system is under maintenance, the drain valve 131 can be controlled to open the drain pipe 13 so that the raw materials remaining in the pressure relief pipe 11 can be discharged through the drain pipe 13, which is convenient for maintenance personnel to carry out maintenance.
[0046] On the other hand, this application also provides a material conveying system, such as Figure 1 As shown, it includes: a storage tank 2, a discharge pipe 3, and a material conveying and pressure stabilizing assembly 1 as provided in any of the above embodiments. The material conveying system of this application, by employing the above-described material conveying and pressure stabilizing assembly 1, also possesses the advantages of the above-described material conveying and pressure stabilizing assembly 1, which will not be elaborated further here.
[0047] Specifically, the inner cavity of storage tank 2 is connected to the discharge pipe 3. The two ends of pressure relief pipe 11 are connected to the inner cavity of storage tank 2 and the discharge pipe 3, respectively. Low-pressure regulating device 12 is connected to the inner cavity of storage tank 2. Storage tank 2 is used to store raw materials and to transport them to the production reaction equipment via discharge pipe 3. Low-pressure regulating device 12 is used to maintain a low-pressure environment inside storage tank 2 and, in conjunction with pressure relief pipe 11, allows the raw materials or gas in discharge pipe 3 to flow back into storage tank 2 to relieve pressure when the pressure in discharge pipe 3 is too high.
[0048] Understandably, the entire material conveying system also includes components such as pumps and valve assemblies to provide power for the conveying of raw materials and to control the flow rate of the raw materials.
[0049] In one specific embodiment, such as Figure 1 As shown, storage tank 2 is connected to inlet pipe 4 and outlet pipe 3. Inlet pipe 4 is equipped with a transfer pump 6 and is used to connect to external pipelines or the tank of a tank truck to deliver raw materials into storage tank 2. Outlet pipe 3 is also equipped with a transfer pump 6 and is used to connect to reactor 5 to transfer the raw materials from storage tank 2 to reactor 5 for reaction. Valves are installed on both inlet pipe 4 and outlet pipe 3 to control their opening degrees respectively.
[0050] Furthermore, the discharge pipe 3 and the feed pipe 4 can share a single delivery pump 6.
[0051] Specifically, in some embodiments, the gas pressure inside the storage tank 2 is greater than or equal to 3 kPa and less than or equal to 5 kPa.
[0052] In this embodiment, by controlling the air pressure of the storage tank 2 between 3 and 5 kPa, the raw material in the storage tank 2 can be kept stable, and the pressure relief pipe 11 can be used to relieve pressure on the discharge pipe 3.
[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A material conveying and pressure stabilizing component, characterized in that, The material conveying and pressure stabilizing assembly is configured to be connected to the storage tank, including: A pressure relief pipe is provided at both ends, with a first port and a second port respectively. The first port is connected to the inner cavity of the storage tank, and the second port is connected to the discharge pipe of the storage tank. A low-pressure regulating device is configured to communicate with the inner cavity of the storage tank, and the low-pressure regulating device is used to regulate the gas pressure inside the storage tank.
2. The material conveying and pressure stabilizing assembly according to claim 1, characterized in that, The pressure relief pipe is equipped with a pressure relief valve, which is used to adjust the opening degree of the pressure relief pipe.
3. The material conveying and pressure stabilizing assembly according to claim 1, characterized in that, The first port is configured to be located at the top of the storage tank.
4. The material conveying and pressure stabilizing assembly according to claim 1, characterized in that, The second port is configured to be located on the lower side of the sidewall of the discharge pipe.
5. The material conveying and pressure stabilizing assembly according to claim 4, characterized in that, The diameter of the pressure relief pipe is configured to be greater than or equal to 1 / 4 of the diameter of the discharge pipe and less than or equal to 1 / 3 of the diameter of the discharge pipe.
6. The material conveying and pressure stabilizing assembly according to claim 1, characterized in that, The low-pressure regulating device includes a low-pressure gas supplier and a breather valve. The low-pressure gas supplier is connected to the inner cavity of the storage tank to introduce low-pressure protective gas into the inner cavity of the storage tank. The storage tank is also provided with a pressure relief port connected to the inner cavity, and the breather valve is located at the pressure relief port.
7. The material conveying and pressure stabilizing assembly according to claim 6, characterized in that, The low-pressure gas supplier is a nitrogen supplier.
8. The material conveying and pressure stabilizing assembly according to claim 1, characterized in that, It also includes a drain pipe and a drain valve. The pressure relief pipe is also provided with a third port. The drain pipe and the third port are connected. The drain valve is installed on the drain pipe.
9. A material conveying system, characterized in that, include: Storage tank, discharge pipe and material conveying and pressure stabilizing assembly as described in any one of claims 1 to 8; The inner cavity of the storage tank is connected to the discharge pipe; both ends of the pressure relief pipe are connected to the inner cavity of the storage tank and the discharge pipe, respectively; the low-pressure regulating device is connected to the inner cavity of the storage tank.
10. The material conveying system according to claim 9, characterized in that, The gas pressure inside the storage tank is greater than or equal to 3 kPa and less than or equal to 5 kPa.