A system and method for high concentration urine production and rapid filling

Abstract

The present application relates to the technical field of urea production, and discloses a system and method for realizing high-concentration urea production and rapid filling, aiming to solve the problems of high crystallization temperature of 75% urea, low efficiency of traditional loading, high labor cost of loading, and high risk of falling from a high altitude and scalding for operators, and comprising a first-stage evaporation separator, a liquid preparation tank A / B, a heat tracing pipeline, a filling crane pipe and the like, wherein 75% urea is stored by double insulation of the heat tracing pipeline and the outer disc steam heat preservation pipeline of the liquid preparation tank A; the method comprises three steps of liquid preparation, loading and pipeline replacement, and low-pressure steam heat tracing is used throughout the process, the system and method break the limitation of "instant production and instant loading", greatly improve the loading efficiency of 75% urea, shorten the loading time by more than 50%, and reduce the labor cost; the operation safety is enhanced by using a guardrail, and the scalding safety risk is reduced by using a pipe head heat insulation sleeve; the urea logistics cost is effectively reduced, the terminal distribution is adapted, and the large-scale promotion of high-concentration automobile urea is facilitated.

Description

Technical Field

[0001] This invention relates to the field of urea production technology, and in particular to a system and method for producing and rapidly filling high-concentration urine. Background Technology

[0002] Automotive urea, also known as diesel exhaust fluid, is a transparent liquid formulated with 32.5% high-purity urea and 67.5% deionized water. It is specifically designed for use in diesel vehicles' SCR (Selective Catalytic Reduction) exhaust treatment systems. This product converts nitrogen oxides in exhaust gases into harmless nitrogen and water vapor through a catalytic reaction, making it suitable for diesel vehicles that meet Euro IV and higher emission standards.

[0003] Automotive urea products are mainly promoted and sold through diversified sales channels to meet the needs of different customer groups. Offline physical sales are an extremely important channel. Currently, the main way to transport automotive urea products is by tanker trucks from the factory to offline distributors in various regions, which results in high logistics costs. Therefore, in order to save logistics costs and increase product sales, manufacturers have launched high-concentration urea. After being transported from the factory to offline distributors, the products are further blended and produced into finished automotive urea locally. However, due to the high concentration and crystallization temperature of high-concentration urea, conventional storage tanks cannot effectively store it. It can only be loaded directly onto trucks after being produced on the production line. The loading efficiency is low, and each loading takes several hours. The entire process requires continuous operation by operators, which consumes a lot of time and manpower. In addition, when loading, the operators are located on top of the tanker truck, and the temperature of the urea products in the filling pipeline is also very high, which poses a great risk of falling from height and being burned by high temperature.

[0004] Therefore, this application provides a system and method for producing and rapidly filling high-concentration urine to meet the needs. Summary of the Invention

[0005] The purpose of this application is to provide a system and method for producing and rapidly filling high-concentration urine, so as to improve the loading efficiency of high-concentration urine, save time and labor costs, reduce operational risks, and enhance the safety of operators during loading operations.

[0006] To achieve the above objectives, this application provides the following technical solution: a system for producing and rapidly filling high-concentration urine, comprising:

[0007] An evaporator is provided, which is used to produce concentrated urine, which is used to prepare 75% urine solution. The evaporator is connected to a conventional solution preparation system, a 75% urine filling loading arm, solution preparation tank A and solution preparation tank B respectively via a first heat tracing pipeline. The first heat tracing pipeline is connected to the first inlet of solution preparation tank B. A flow meter and a regulating ball valve are provided on the first heat tracing pipeline at the front end of the first inlet.

[0008] The liquid preparation tank A is equipped with an external steam insulation pipe. The external steam insulation pipe introduces low-pressure steam from the low-pressure steam branch and is connected to the heating pipe in the heat tracing pipeline.

[0009] The external steam insulation pipe and the heat tracing pipe at the front end of the conventional liquid distribution system are connected by a steam branch to the condensate recovery pipe. A steam trap is installed at the front end of the condensate recovery pipe, and a flow meter is installed on the steam branch at the front end of the conventional liquid distribution system.

[0010] A main filling line is used to transport regular urine. The main filling line is connected to the filling port of the liquid bag cart and the mixing tank B through a first conventional pipeline. The first conventional pipeline is connected to the second inlet of the mixing tank B.

[0011] The outlet of the liquid preparation tank A is connected to the first heat tracing pipeline at the front end of the 75% urine filling loading arm via the second heat tracing pipeline. The second heat tracing pipeline is equipped with a 75% urine filling pump. The second heat tracing pipeline and the first conventional pipeline share a section of heat tracing pipeline, and the shared heat tracing pipeline is equipped with a compressor and a regulating valve.

[0012] The outlet of the liquid preparation tank B is connected to a conventional urine filling arm via a second conventional pipeline. A differentiated filling pump is installed on the second conventional pipeline. The second conventional pipeline at the front end of the differentiated filling pump is connected to the second heat tracing pipeline at the front end of the 75% urine filling pump via a third conventional pipeline. The third conventional pipeline is connected to the second conventional pipeline via a four-way connector.

[0013] The rear end of the 75% urine filling pump is connected to the liquid preparation tank A via a heat tracing pipeline, and the rear end of the differentiated filling pump is connected to the first conventional pipeline at the front end of the first inlet via a conventional pipeline.

[0014] Valves are installed at the connection points between the above-mentioned components and pipelines to switch pipelines.

[0015] Preferably, the 75% urine filling loading arm further includes a filling platform, a movable ladder, and the loading arm itself. The movable ladder and the loading arm are located at the top of the filling platform. A front step is located at the end of the movable ladder. End plates are symmetrically located on both sides of the front step. A support plate is located at the bottom of the front step. An extension step is slidably connected to the support plate. An adjustment mechanism is located on one side of the end plate to control the travel of the extension step. A working step is located at the front of the extension step. A guardrail is located on the top edge of the working step. A synchronous limiting mechanism is located on one side of the guardrail. The synchronous limiting mechanism can limit the end of the loading arm, so that the loading arm and the movable ladder move synchronously. This eliminates the need to open the movable ladder and then return to the filling platform to operate the loading arm, improving the convenience and efficiency of the operation.

[0016] Preferably, the adjustment mechanism includes an adjustment wheel, a guide rod, a connecting rod, a front support rod, and a rear support rod. A rotating sleeve is provided on the top of the end plate, and the adjustment wheel is rotatably connected to the rotating sleeve. A screw is provided at the bottom of the adjustment wheel, and the screw is threadedly connected to the guide rod. A guide sleeve is provided on the side wall of the end plate, and the guide rod is slidably connected within the guide sleeve. The connecting rod is hinged to the bottom of the guide rod. The front support rod is hinged to the side wall of the extension pedal, and the rear support rod is hinged to the end plate. The movable ends of the front support rod, the rear support rod, and the connecting rod are hinged together. The position of the extension pedal can be adjusted by rotating the adjustment wheel, and the self-locking property of the threaded connection stabilizes the position of the extension pedal.

[0017] Preferably, the pallet has symmetrical track grooves on both sides, the bottom of the extension pedal has a shaft frame, multiple sets of shaft frames are evenly arranged, axle rods are rotatably connected to the shaft frame, multiple sets of axle rods are evenly distributed, support wheels are provided on the axle rods, multiple sets of support wheels are evenly distributed, the two sets of support wheels at both ends of the axle rod are adapted to the track grooves, the rear end of the shaft frame is hinged to a support arm, a torsion spring is press-fitted at the hinge of the shaft frame and the support arm, the end of the support arm is rotatably connected to a guide wheel, and the bottom of the front pedal is provided with... The device includes multiple guide rails that correspond to the position of the shaft frame. The guide wheel is adapted to the guide rail. A limiting block is provided on the side wall of the rear part of the shaft frame to limit the rotation angle of the support arm. Both the rear part of the track groove and the front part of the guide rail are provided with stops. The support wheel facilitates the movement of the extension pedal. The support arm cooperates with the limiting block to limit the rotation angle of the support arm, thereby providing top support for the rear side of the extension pedal and enhancing the stability of the extension pedal.

[0018] Preferably, the front side of each end plate is symmetrically provided with a front extension rod, and the rear side of the guardrail is symmetrically provided with a rear extension rod. The front extension rod and the rear extension rod are slidably connected, and the ends of the two are connected together by a rod sleeve, which can enhance the stability of the guardrail.

[0019] Preferably, the synchronous limiting mechanism includes a connecting frame, a limiting frame, and clamps. The connecting frame is provided on the guardrail, and the middle of the connecting frame is open. One end of the limiting frame is connected to the clamps. Two sets of clamps can limit the pipe head. The other end of the limiting frame is connected to a handle. The connecting frame has an outer positioning hole and an inner positioning hole. The limiting frame has a through hole. The through hole is limited by a positioning pin and the outer positioning hole and the inner positioning hole. The limiting frame also includes an outer limiting frame and an inner limiting frame. The outer limiting frame is hinged to the outside of the connecting frame, and the inner limiting frame is hinged to the inside of the connecting frame. The hinge parts of the outer limiting frame and the inner limiting frame are symmetrical on the connecting frame. The outer limiting frame and the inner limiting frame can be staggered. By cooperating with the positioning pin and the outer positioning hole and the inner positioning hole, the two sets of limiting frames with the through holes are fixed on the connecting frame, reducing interference with loading.

[0020] Preferably, the pipe head is provided with a sealing cap and a heat insulation sleeve. The heat insulation sleeve is located above the sealing cap. A rotating ring is rotatably connected to the heat insulation sleeve. There are two sets of rotating rings arranged vertically. The two sets of rotating rings are symmetrically provided with handles, which facilitates the operator to use the handles to operate the pipe head for insertion into the tank truck.

[0021] In addition, a method for producing and rapidly filling high-concentration urine is also provided, including the following steps:

[0022] S1. Prepare 75% urine solution. Switch pipelines to connect a section of the evaporator to the solution preparation tank A, and close the outlet of solution preparation tank A. The section of the evaporator produces concentrated urine, which is transported to solution preparation tank A through the first heat tracing pipeline. After the concentrated urine is transported, switch pipelines to connect the filling main pipeline to solution preparation tank A through the common heat tracing pipeline and the first heat tracing pipeline. Inject urine of a fixed concentration according to the concentration difference to make the urine in solution preparation tank A reach a concentration ratio of 75%. Switch pipelines to form a circulation pipeline between solution preparation tank A and the 75% urine filling pump. Turn on the 75% urine filling pump to make the urine in solution preparation tank A uniformly mixed to obtain 75% urine solution.

[0023] S2, 75% urine is loaded onto the truck. The pipeline is switched so that the mixing tank A is connected to the 75% urine filling loading arm through the second heat tracing pipeline. The insulated tank truck is parked at the filling station, and the operator uses the 75% urine filling loading arm to load the truck.

[0024] S3. Replacement fluid pipeline filling: After completing the loading of 75% urine, switch the pipeline to connect the main filling fluid line to the mixing tank B. Add sufficient replacement fluid to the mixing tank B, then switch the pipeline to connect the outlet of the mixing tank B to the inlet of the 75% urine filling pump through the first conventional pipeline and the third conventional pipeline. Connect the outlet of the 75% urine filling pump to the first inlet of the mixing tank B through the second heating pipeline and the first heating pipeline to replace the 75% urine pipeline.

[0025] Throughout the above steps, the low-pressure steam branch is kept in normal supply for insulation, liquid preparation, loading, and replacement.

[0026] Preferably, the concentrated urine temperature is 85℃-95℃, the concentration is 75%-80%, the low-pressure steam temperature is 110℃-130℃, and the storage volume of the mixing tank is 30-80m³.

[0027] Preferably, the concentrated urine is at a temperature of 90°C and a concentration of 75%, the low-pressure steam temperature is 120°C, and the mixing tank has a storage volume of 50 m³.

[0028] This system and method address the core pain points in the background technology, achieving breakthroughs in multiple dimensions, with the following specific beneficial effects:

[0029] First, it significantly improves loading efficiency and reduces labor and time costs.

[0030] Traditional methods require direct loading from the production line, taking up to 6 hours per operation with continuous staffing. This system, through a heated and insulated storage tank A with heated pipelines, breaks the limitation of "immediate production and immediate loading." 75% of urine can be temporarily stored in tank A, and loading can be completed quickly using a dedicated filling pump and loading arm, reducing loading time by more than 50%, depending on the tanker's volume. No long-term staffing is required.

[0031] The liquid preparation process is automated and precisely controlled through a flow meter, regulating ball valve, and circulating mixing design, eliminating the need for repeated manual concentration measurements and stirring, thus reducing manpower input; at the same time, pipeline switching is completed through valve linkage, avoiding the tedious operation of traditional manual pipeline insertion and removal.

[0032] II. Significantly reduces operational risks and improves operational safety;

[0033] Mitigating the risk of falls from height: The combination of movable ladder, extended steps, and guardrails in the 75% urine filling loading arm allows for flexible adjustment of the work platform position according to the tanker height. The guardrails surround the edge of the working steps, eliminating the need for operators to stand directly on top of the tanker. Furthermore, the loading arm and movable ladder move synchronously, improving ease of use.

[0034] To mitigate the risk of burns from high temperatures: The loading arm is equipped with an insulation sleeve to block the heat of urine at 85℃-95℃, while a synchronous limiting mechanism fixes the position of the loading arm to prevent operators from directly contacting the high-temperature pipeline; in addition, the heat tracing system maintains a stable pipeline temperature throughout the entire process, eliminating the risk of pipeline blockage or leakage caused by local cooling and crystallization.

[0035] Third, it solves the problem of storing 75% of urine and reduces logistics and equipment costs;

[0036] Traditional methods cannot store 75% urine in conventional tanks because it is prone to crystallization. Instead, it can only be directly loaded onto the production line, which limits the transportation radius and sales scope. This system uses double insulation of "heat tracing pipeline + external steam insulation pipeline" to make the volume of the liquid preparation tank A 30-80m³, preferably 50m³, which can stably store 75% urine. Manufacturers can produce in batches and temporarily store the urine, and then fill it in batches according to the needs of distributors, which improves production flexibility.

[0037] By reducing the transportation volume through high concentration, the logistics cost of 75% urine is only 1 / 3 to 1 / 2 of that of conventional finished urea. Moreover, the heat utilization rate of the low-pressure steam tracing system is increased by more than 30%. At the same time, the liquid preparation tank B and the differentiated filling pump can also handle conventional urine filling without the need to purchase special equipment separately, thus reducing equipment investment costs.

[0038] IV. Ensure product quality stability and adapt to end-user distribution needs;

[0039] The solution preparation process uses a precise concentration control flow meter and regulating ball valve for circulation mixing to ensure that 75% of the urine concentration deviation is ≤±0.5%, avoiding the problem of uneven concentration caused by traditional manual preparation.

[0040] After 75% of the urine reaches the distributor, it can be directly mixed with deionized water to form a 32.5% finished automotive urea solution without the need for additional equipment modifications. This meets the "on-site mixing" needs of end users and further reduces the storage and processing costs for distributors.

[0041] In summary, this system, through its integrated design of "thermal storage - precise liquid preparation - safe filling - pipeline replacement," comprehensively solves the efficiency, safety, and cost issues in the production, storage, and filling of 75% urea, providing technical support for the large-scale promotion of high-concentration automotive urea, while also meeting environmental regulations for the quality and logistics efficiency of automotive urea products. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of this application 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 only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is a schematic diagram of the system structure of the present invention;

[0044] Figure 2 This is a schematic diagram of the overall assembly structure of the filling platform, movable ladder and loading arm of the present invention;

[0045] Figure 3 For the present invention Figure 2 A magnified structural diagram at point A;

[0046] Figure 4 For the present invention Figure 2 A magnified structural diagram at point B;

[0047] Figure 5 This is a front view structural diagram of the filling station of the present invention;

[0048] Figure 6 For the present invention Figure 5 A magnified structural diagram at point D;

[0049] Figure 7 For the present invention Figure 5 Schematic diagram of CC cross-section structure;

[0050] Figure 8 For the present invention Figure 7 A magnified structural diagram at point E.

[0051] In the diagram: 1. Filling platform; 2. Movable ladder; 3. Loading arm; 4. Extension pedal; 5. Working pedal; 6. Connecting frame; 7. Adjusting wheel; 8. Guide rail; 20. Front pedal; 21. End plate; 22. Rotary sleeve; 23. Guide sleeve; 24. Guide rod; 25. Connecting rod; 26. Front support rod; 27. Rear support rod; 28. Front extension rod; 30. Pipe end; 31. Sealing cap; 32. Heat insulation sleeve; 33. Rotary ring; 40. Support plate; 41. Track groove; 42. Shaft bracket; 43. Shaft rod; 44. Support wheel; 45. Support arm; 46. Guide wheel; 47. Limiting block; 50. Guardrail; 51. Rear extension rod; 60. External positioning hole; 61. External limiting frame; 62. Internal limiting frame; 63. Clamp; 64. Handle; 65. Positioning pin. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] Example 1:

[0054] refer to Figure 1-8 The system shown is a high-concentration urine production and rapid filling system, including an evaporator-separator, which is used to produce concentrated urine, and the concentrated urine is used to prepare 75% urine solution. The evaporator-separator is connected to a conventional liquid preparation system, a 75% urine filling loading arm, liquid preparation tank A and liquid preparation tank B respectively through a first heat tracing pipeline. The first heat tracing pipeline is connected to the first inlet of liquid preparation tank B. A flow meter and a regulating ball valve are provided on the first heat tracing pipeline at the front end of the first inlet.

[0055] The external steam insulation pipe of the liquid preparation tank A is provided. The external steam insulation pipe introduces low-pressure steam from the low-pressure steam branch and is connected to the heating pipe in the heat tracing pipeline.

[0056] The external steam insulation pipeline and the heat tracing pipeline at the front end of the conventional liquid distribution system have a steam branch that converges to the condensate recovery pipe. A steam trap is installed at the front end of the condensate recovery pipe, and a flow meter is installed on the steam branch at the front end of the conventional liquid distribution system.

[0057] The main filling line is used to transport regular urine. The main filling line is connected to the filling port of the liquid bag cart and the liquid preparation tank B through the first conventional pipeline. The first conventional pipeline is connected to the second liquid inlet of the liquid preparation tank B.

[0058] The outlet of the liquid preparation tank A is connected to the first heat tracing pipeline at the front end of the 75% urine filling loading arm through the second heat tracing pipeline. The second heat tracing pipeline is equipped with a 75% urine filling pump. The second heat tracing pipeline and the first conventional pipeline share a section of heat tracing pipeline, and a compressor and regulating valve are installed on the shared heat tracing pipeline.

[0059] The outlet of the liquid preparation tank B is connected to a conventional urine filling arm via a second conventional pipeline. A differentiated filling pump is installed on the second conventional pipeline. The second conventional pipeline at the front end of the differentiated filling pump is connected to the second heat tracing pipeline at the front end of the 75% urine filling pump via a third conventional pipeline. The third conventional pipeline is connected to the second conventional pipeline via a four-way connector.

[0060] The rear end of the 75% urine filling pump is connected to the liquid preparation tank A via a heated pipeline, and the rear end of the differentiated filling pump is connected to the first conventional pipeline at the front end of the first inlet via a conventional pipeline.

[0061] Valves are installed at the connection points between the above-mentioned components and pipelines to switch pipelines.

[0062] As one implementation method in this embodiment, to facilitate climbing the movable ladder 1 and operating the loading arm 3, such as Figure 2 , Figure 3 as well as Figures 5 to 8As shown, the 75% urine filling loading arm also includes a filling platform 1, a movable ladder 2, and a loading arm 3. The top of the filling platform 1 is equipped with the movable ladder 2 and the loading arm 3. The end of the movable ladder 2 is equipped with a front step 20. The two sides of the front step 20 are symmetrically equipped with end plates 21. The bottom of the front step 20 is equipped with a support plate 40. An extension step 4 is slidably connected to the support plate 40. An adjustment mechanism is provided on one side of the end plate 21. The adjustment mechanism is used to control the stroke of the extension step 4. The front of the extension step 4 is equipped with a working step 5. The top edge of the working step 5 is equipped with a guardrail 50. A synchronous limiting mechanism is provided on one side of the guardrail 50. The synchronous limiting mechanism can limit the tube head 30 at the end of the loading arm 3, so that the loading arm 3 and the movable ladder 2 move synchronously.

[0063] As one implementation method in this embodiment, to facilitate control of the movement of the extension pedal 4, such as Figure 3 As shown, the adjustment mechanism includes an adjustment wheel 7, a guide rod 24, a connecting rod 25, a front support rod 26, and a rear support rod 27. The top of the end plate 21 is provided with a rotating sleeve 22, and the adjustment wheel 7 is rotatably connected to the rotating sleeve 22. The bottom of the adjustment wheel 7 is provided with a screw, which is threadedly connected to the guide rod 24. The side wall of the end plate 21 is provided with a guide sleeve 23, and the guide rod 24 is slidably connected in the guide sleeve 23. The bottom of the guide rod 24 is hinged to the connecting rod 25. The side wall of the extension pedal 4 is hinged to the front support rod 26, and the end plate 21 is hinged to the rear support rod 27. The movable ends of the front support rod 26, the rear support rod 27, and the connecting rod 25 are hinged together.

[0064] As one implementation method in this embodiment, to ensure the stable movement of the extension pedal 4, such as Figure 6 As shown, the pallet 40 has symmetrical track grooves 41 on both sides, and the bottom of the extension pedal 4 has a shaft frame 42. There are three sets of shaft frames 42 evenly arranged. A shaft rod 43 is rotatably connected to the shaft frame 42. There are four sets of shaft rods 43 evenly distributed. There are six sets of support wheels 44 evenly distributed on the shaft rods 43. The two sets of support wheels 44 at both ends of the shaft rods 43 are adapted to the track grooves 41. The rear end of the shaft frame 42 is hinged to a support arm 45. A torsion spring is press-fitted at the hinge between the shaft frame 42 and the support arm 45. The end of the support arm 45 is rotatably connected to a guide wheel 46. The bottom of the front pedal 20 has a guide rail 8. There are three sets of guide rails 8 corresponding to the position of the shaft frame 42. The guide wheel 46 is adapted to the guide rail 8. A limiting block 47 is provided on the side wall of the rear part of the shaft frame 42. The limiting block 47 is used to limit the rotation angle of the support arm 45. The rear part of the track groove 41 and the front part of the guide rail 8 are both provided with a stop block.

[0065] As one implementation method in this embodiment, in order to maintain the stability of the guardrail 50 and reduce the risk of falls during high-altitude operations, such as Figure 3As shown, the front side of the end plate 21 is symmetrically provided with front extension rods 28, and the rear side of the guardrail 50 is symmetrically provided with rear extension rods 51. The front extension rods 28 and the rear extension rods 51 are slidably connected, and the ends of the two are connected together by rod sleeves.

[0066] As one implementation method in this embodiment, to facilitate the connection between the loading arm 3 and the movable ladder 2 so that they can move synchronously, such as... Figure 4 As shown, the synchronous limiting mechanism includes a connecting frame 6, a limiting frame, and a clamp 63. The guardrail 50 is provided with a connecting frame 6, which is open in the middle. One end of the limiting frame is connected to a clamp 63. Two sets of clamps 63 can be combined to limit the pipe head 30. The other end of the limiting frame is connected to a handle 64. The connecting frame 6 is provided with an outer positioning hole 60 and an inner positioning hole. The limiting frame is provided with a through hole. The through hole is limited by a positioning pin 65 and the outer positioning hole 60 and the inner positioning hole. The limiting frame also includes an outer limiting frame 61 and an inner limiting frame 62. The outer limiting frame 61 is hinged to the outside of the connecting frame 6, and the inner limiting frame 62 is hinged to the inside of the connecting frame 6. The hinge parts of the outer limiting frame 61 and the inner limiting frame 62 are symmetrical on the connecting frame 6. The outer limiting frame 61 and the inner limiting frame 62 can be staggered.

[0067] As one implementation method in this embodiment, to enhance the protective effect and reduce the risk of high-temperature burns, such as Figure 4 As shown, the pipe head 30 is provided with a sealing cap 31 and a heat insulation sleeve 32. The heat insulation sleeve 32 is located above the sealing cap 31. A rotating ring 33 is rotatably connected to the heat insulation sleeve 32. There are two sets of rotating rings 33 arranged vertically. The two sets of rotating rings 33 are symmetrically provided with handles.

[0068] Another method for producing and rapidly filling high-concentration urine is provided, including the following steps:

[0069] S1. Prepare 75% urine solution. Switch the pipeline to connect a first-stage evaporator to the solution preparation tank A, and close the outlet of solution preparation tank A. The first-stage evaporator produces concentrated urine at a temperature of 90℃ and a concentration of 75%, which is transported to solution preparation tank A through the first heat tracing pipeline. After the concentrated urine is transported, switch the pipeline to connect the filling main pipe to solution preparation tank A through the common heat tracing pipeline and the first heat tracing pipeline. Inject urine of a fixed concentration according to the concentration difference to make the urine in solution preparation tank A reach a concentration ratio of 75%. Switch the pipeline to form a circulation pipeline between solution preparation tank A and the 75% urine filling pump. Turn on the 75% urine filling pump to make the urine in solution preparation tank A uniformly mixed to obtain 75% urine solution.

[0070] S2, 75% urine is loaded onto the truck. The pipeline is switched so that the mixing tank A is connected to the 75% urine filling loading arm through the second heat tracing pipeline. The insulated tank truck is parked at the filling station, and the operator uses the 75% urine filling loading arm to load the truck.

[0071] S3. Replacement fluid pipeline filling: After completing the loading of 75% urine, switch the pipeline to connect the main filling fluid line to the mixing tank B. Add sufficient replacement fluid to the mixing tank B, then switch the pipeline to connect the outlet of the mixing tank B to the inlet of the 75% urine filling pump through the first conventional pipeline and the third conventional pipeline. Connect the outlet of the 75% urine filling pump to the first inlet of the mixing tank B through the second heating pipeline and the first heating pipeline to replace the 75% urine pipeline.

[0072] Throughout the above steps, the low-pressure steam branch is maintained at a normal supply of 120℃ for heat tracing and insulation, and the insulation solution is prepared, loaded and replaced.

[0073] This system achieves stable production and efficient, safe filling of 75% urine solution through a closed-loop process of "production solution preparation - rapid filling - pipeline replacement," combined with heat tracing and insulation, pipeline switching, and structural optimization design. Specifically, it consists of three core stages:

[0074] I. 75% Urine Production and Solution Preparation Stage;

[0075] Concentrated urine transport and initial storage: A first-stage evaporator produces concentrated urine at 90℃ and a concentration of 75%. This concentrated urine is then transported to mixing tank A via a first heating pipeline, where it is kept at 120℃ by a low-pressure steam branch to prevent cooling and crystallization. During this stage, the outlet of mixing tank A is closed by switching pipeline valves. Simultaneously, the external steam insulation pipe of mixing tank A is connected to the heating pipe of the heating pipeline for double insulation, ensuring that the urine in the first heating pipeline and mixing tank A is always maintained above the crystallization temperature of 60℃, solving the problem that conventional storage tanks cannot handle.

[0076] Precise concentration adjustment: After the concentrated urine is delivered, the pipeline is switched so that the main filling pipeline delivers regular urine through the "common heat tracing pipeline + first heat tracing pipeline" to the mixing tank A. Based on the concentration difference between the concentrated urine and regular urine, the flow meter and regulating ball valve at the front end of the first heat tracing pipeline precisely control the injection volume of regular urine until the urine in the mixing tank A reaches the target concentration of 75%.

[0077] Uniform mixing: Switch the pipeline again so that the outlet of the liquid preparation tank A forms a circulation loop with the first heat tracing pipeline through the second heat tracing pipeline and the 75% urine filling pump. Start the 75% urine filling pump to allow the urine in the tank to circulate under heat tracing, so as to achieve uniform mixing and avoid local concentration deviations from affecting subsequent use.

[0078] II. Rapid filling stage with 75% urine;

[0079] Pipeline switching and workstation preparation: After completing the liquid preparation, switch the connecting valve between the second heating pipeline and the 75% urine filling loading arm, and simultaneously park the insulated tank truck at the filling station. At this time, the 75% urine in the liquid preparation tank A remains stable under the maintenance of the heating system, eliminating the need to load directly from the production line as in the traditional method, thus breaking the limitation of "immediate production and immediate loading".

[0080] Safe and efficient filling: The operator climbs onto the filling platform 1, lowers the movable ladder 2, and moves the working pedal 5 simultaneously. The connecting frame 6 on the guardrail 50 moves synchronously. At this time, the outer limit frame 61 and the inner limit frame 62 are fixed at the inner positioning hole by the positioning pin 65. The two sets of clamps 63 connected to the limit frames hold the pipe head 30, so that the movable ladder 2 moves synchronously with the loading arm 3. According to the parking position of the tanker, the adjusting wheel 7 on the rotating sleeve 22 is rotated, driving the guide rod 24 to move downward along the guide sleeve 23, driving the connecting rod 25 to move, and pushing the hinge joint between the front support rod 26 and the rear support rod 27. This pushes the extension pedal 4 forward, adjusting the position of the working pedal 5 so that the working pedal 5 can fall onto the top of the tanker. During this process, the support wheel 44 on the bottom axle frame 42 of the extension pedal 4 rolls along the track groove 41 on the pallet 40, reducing the friction when the extension pedal 4 moves. The guide wheel 46 moves forward along the guide rail 8, causing the support arm 45 to flip. The limiting block 47 limits the support arm 45, so that the support arm 45 supports the extension pedal 4. At the same time, the rear extension rod 51 moves with the guardrail 50 and moves in the opposite direction to the front extension rod 28, which plays a stabilizing role above the guardrail 50.

[0081] After lowering the working pedal 5 to the top of the tanker truck, remove the positioning pin 65. Hold the handle 64 to operate the outer limit frame 61 and inner limit frame 62 to open the clamp 63. Then, use the positioning pin 65 to limit the outer limit frame 61 and inner limit frame 62 at the outer positioning hole 60. Next, use the handle to move the pipe head 30 via the rotating ring 33, inserting the pipe head 30 into the tanker truck's inlet. Place the sealing cap 31 over the inlet to prevent leakage. The heat insulation sleeve 32 reduces the risk of burns during operation. Then, start the 75% urine filling pump to complete the filling. Compared to the traditional 6-hour loading time, this system significantly shortens the loading time through a dedicated filling pump and optimized loading arm structure. Simultaneously, the guardrail 50 prevents falls from height, and the heat insulation sleeve 32 of the pipe head 30 prevents burns from high temperatures, forming a double safety protection to address the safety risks to operators.

[0082] III. Pipeline replacement stage;

[0083] To avoid 75% urine residue affecting subsequent routine urine filling, the pipeline replacement process is initiated after loading is completed:

[0084] Switch the pipeline to allow the main filling line to add sufficient regular urine as replacement fluid to the mixing tank B through the first conventional pipeline;

[0085] Switch the pipeline again so that the outlet of the solution tank B is connected to the inlet of the 75% urine filling pump through the "second conventional pipeline + third conventional pipeline", and at the same time, connect the outlet of the 75% urine filling pump to the first inlet of the solution tank B through the "second heat tracing pipeline + first heat tracing pipeline" to form a replacement fluid circulation loop.

[0086] Start the 75% urine filling pump to circulate the replacement fluid in the first heat-traced pipeline, the second heat-traced pipeline, and the common heat-traced pipeline related to 75% urine, so as to completely remove the residual 75% urine and prepare for subsequent regular urine filling or the next round of 75% urine production.

[0087] IV. Supporting process collaboration;

[0088] Throughout the process, a condensate recovery pipe is installed at the front end to recover the condensate generated by the external steam insulation pipe and the conventional liquid distribution system heat tracing pipeline, thus avoiding energy waste. Liquid distribution tank B can achieve conventional urine filling through "second conventional pipeline + conventional urine filling arm", and the differentiated filling pump can be reused through pipeline switching to 75% urine-related processes, improving equipment utilization.

[0089] Example 2:

[0090] The difference between this embodiment and Embodiment 1 is that the first evaporator produces concentrated urine at a temperature of 95°C and a concentration of 80%, and the first heat tracing pipeline is provided with heat tracing and insulation at 130°C by a low-pressure steam branch throughout.

[0091] Example 3:

[0092] The difference between this embodiment and Embodiment 1 is that the first evaporator produces concentrated urine at a temperature of 85°C and a concentration of 77%, and the first heat tracing pipeline is provided with heat tracing and insulation at 110°C by a low-pressure steam branch throughout.

[0093] The electromechanical connection involved in this invention is a common method used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. It is common knowledge.

[0094] Components not described in detail in this article are existing technologies.

[0095] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A system for producing and rapidly filling high-concentration urine, characterized in that, include: An evaporator is provided, which is used to produce concentrated urine, which is used to prepare 75% urine solution. The evaporator is connected to a conventional solution preparation system, a 75% urine filling loading arm, solution preparation tank A and solution preparation tank B respectively via a first heat tracing pipeline. The first heat tracing pipeline is connected to the first inlet of solution preparation tank B. A flow meter and a regulating ball valve are provided on the first heat tracing pipeline at the front end of the first inlet. The liquid preparation tank A is equipped with an external steam insulation pipe. The external steam insulation pipe introduces low-pressure steam from the low-pressure steam branch and is connected to the heating pipe in the heat tracing pipeline. The external steam insulation pipe and the heat tracing pipe at the front end of the conventional liquid distribution system are connected by a steam branch to the condensate recovery pipe. A steam trap is installed at the front end of the condensate recovery pipe, and a flow meter is installed on the steam branch at the front end of the conventional liquid distribution system. A main filling line is used to transport regular urine. The main filling line is connected to the filling port of the liquid bag cart and the mixing tank B through a first conventional pipeline. The first conventional pipeline is connected to the second inlet of the mixing tank B. The outlet of the liquid preparation tank A is connected to the first heat tracing pipeline at the front end of the 75% urine filling loading arm via the second heat tracing pipeline. The second heat tracing pipeline is equipped with a 75% urine filling pump. The second heat tracing pipeline and the first conventional pipeline share a section of heat tracing pipeline, and the shared heat tracing pipeline is equipped with a compressor and a regulating valve. The outlet of the liquid preparation tank B is connected to a conventional urine filling arm via a second conventional pipeline. A differentiated filling pump is installed on the second conventional pipeline. The second conventional pipeline at the front end of the differentiated filling pump is connected to the second heat tracing pipeline at the front end of the 75% urine filling pump via a third conventional pipeline. The third conventional pipeline is connected to the second conventional pipeline via a four-way connector. The rear end of the 75% urine filling pump is connected to the liquid preparation tank A via a heat tracing pipeline, and the rear end of the differentiated filling pump is connected to the first conventional pipeline at the front end of the first inlet via a conventional pipeline. Valves are installed at the connection points between the above-mentioned components and pipelines to switch pipelines.

2. The system for producing and rapidly filling high-concentration urine according to claim 1, characterized in that: The 75% urine filling loading arm also includes a filling platform (1), a movable ladder (2), and a loading arm (3). The top of the filling platform (1) is provided with the movable ladder (2) and the loading arm (3). The end of the movable ladder (2) is provided with a front pedal (20). The two sides of the front pedal (20) are symmetrically provided with end plates (21). The bottom of the front pedal (20) is provided with a support plate (40). An extension pedal (4) is slidably connected to the support plate (40). An adjustment mechanism is provided on one side of the end plate (21). The adjustment mechanism is used to control the stroke of the extension pedal (4). The front part of the extension pedal (4) is provided with a working pedal (5). The top edge of the working pedal (5) is provided with a guardrail (50). A synchronous limiting mechanism is provided on one side of the guardrail (50). The synchronous limiting mechanism can limit the end of the loading arm (3) (30) so that the loading arm (3) and the movable ladder (2) move synchronously.

3. The system for producing and rapidly filling high-concentration urine according to claim 2, characterized in that: The adjustment mechanism includes an adjustment wheel (7), a guide rod (24), a connecting rod (25), a front support rod (26), and a rear support rod (27). The top of the end plate (21) is provided with a rotating sleeve (22). The adjustment wheel (7) is rotatably connected to the rotating sleeve (22), and the bottom of the adjustment wheel (7) is provided with a screw. The screw is threadedly connected to the guide rod (24). The side wall of the end plate (21) is provided with a guide sleeve (23). The guide rod (24) is slidably connected in the guide sleeve (23). The bottom of the guide rod (24) is hinged to the connecting rod (25). The side wall of the extension pedal (4) is hinged to the front support rod (26). The end plate (21) is hinged to the rear support rod (27). The front support rod (26), the rear support rod (27), and the moving ends of the connecting rod (25) are hinged together.

4. The system for producing and rapidly filling high-concentration urine according to claim 3, characterized in that: The pallet (40) has symmetrical track grooves (41) on both sides. The bottom of the extension pedal (4) has a shaft frame (42). There are multiple sets of shaft frames (42) evenly arranged. A shaft rod (43) is rotatably connected to the shaft frame (42). There are multiple sets of shaft rods (43) evenly distributed. A support wheel (44) is provided on the shaft rod (43). There are multiple sets of support wheels (44) evenly distributed. The two sets of support wheels (44) located at both ends of the shaft rod (43) are adapted to the track grooves (41). A support arm (45) is hinged to the rear end of the shaft frame (42). A torsion spring is press-fitted at the hinge of the axle frame (42) and the support arm (45). A guide wheel (46) is rotatably connected to the end of the support arm (45). A guide rail (8) is provided at the bottom of the front pedal (20). There are multiple sets of guide rails (8) and they correspond to the position of the axle frame (42). The guide wheel (46) is adapted to the guide rail (8). A limiting block (47) is provided on the side wall of the rear part of the axle frame (42). The limiting block (47) is used to limit the rotation angle of the support arm (45). A stop block is provided at the rear part of the track groove (41) and the front part of the guide rail (8).

5. The system for producing and rapidly filling high-concentration urine according to claim 4, characterized in that: The front side of the end plate (21) is symmetrically provided with front extension rods (28), and the rear side of the guardrail (50) is symmetrically provided with rear extension rods (51). The front extension rods (28) and the rear extension rods (51) are slidably connected, and the ends of the two are connected together by rod sleeves.

6. A system for producing and rapidly filling high-concentration urine according to claim 2, characterized in that: The synchronous limiting mechanism includes a connecting frame (6), a limiting frame, and a clamp (63). The connecting frame (6) is provided on the guardrail (50). The middle of the connecting frame (6) is open. One end of the limiting frame is connected to the clamp (63). The two sets of clamps (63) can be combined to limit the pipe head (30). The other end of the limiting frame is connected to a handle (64). The connecting frame (6) is provided with an outer positioning hole (60) and an inner positioning hole. The limiting frame is provided with a through hole. The through hole allows for the placement of the pipe head (30). The positioning pin (65) limits the positioning of the outer positioning hole (60) and the inner positioning hole. The limiting frame also includes an outer limiting frame (61) and an inner limiting frame (62). The outer limiting frame (61) is hinged to the outside of the connecting frame (6), and the inner limiting frame (62) is hinged to the inside of the connecting frame (6). The hinged parts of the outer limiting frame (61) and the inner limiting frame (62) are symmetrical on the connecting frame (6). The outer limiting frame (61) and the inner limiting frame (62) can be staggered.

7. A system for producing and rapidly filling high-concentration urine according to claim 2, characterized in that: The pipe head (30) is provided with a sealing cap (31) and a heat insulation sleeve (32). The heat insulation sleeve (32) is located above the sealing cap (31). A rotating ring (33) is rotatably connected to the heat insulation sleeve (32). There are two sets of rotating rings (33) arranged vertically. The two sets of rotating rings (33) are symmetrically provided with handles.

8. A method for producing and rapidly filling high-concentration urine, characterized in that, A system for producing and rapidly filling high-concentration urine according to any one of claims 1-7 includes the following steps: S1. Prepare 75% urine solution. Switch pipelines to connect a section of the evaporator to the solution preparation tank A, and close the outlet of solution preparation tank A. The section of the evaporator produces concentrated urine, which is transported to solution preparation tank A through the first heat tracing pipeline. After the concentrated urine is transported, switch pipelines to connect the filling main pipeline to solution preparation tank A through the common heat tracing pipeline and the first heat tracing pipeline. Inject urine of a fixed concentration according to the concentration difference to make the urine in solution preparation tank A reach a concentration ratio of 75%. Switch pipelines to form a circulation pipeline between solution preparation tank A and the 75% urine filling pump. Turn on the 75% urine filling pump to make the urine in solution preparation tank A uniformly mixed to obtain 75% urine solution. S2, 75% urine is loaded onto the truck. The pipeline is switched so that the mixing tank A is connected to the 75% urine filling loading arm through the second heat tracing pipeline. The insulated tank truck is parked at the filling station, and the operator uses the 75% urine filling loading arm to load the truck. S3. Replacement fluid pipeline filling: After completing the loading of 75% urine, switch the pipeline to connect the main filling fluid line to the mixing tank B. Add sufficient replacement fluid to the mixing tank B. Then switch the pipeline to connect the outlet of the mixing tank B to the inlet of the 75% urine filling pump through the first conventional pipeline and the third conventional pipeline. Connect the outlet of the 75% urine filling pump to the first inlet of the mixing tank B through the second heating pipeline and the first heating pipeline to replace the 75% urine pipeline. Throughout the above steps, maintain a normal supply of low-pressure steam to carry out insulation, liquid preparation, loading, and replacement.

9. A method for producing and rapidly filling high-concentration urine according to claim 8, characterized in that: The concentrated urine solution is prepared at a temperature of 85℃-95℃ and a concentration of 75%-80%. The low-pressure steam temperature is 110℃-130℃, and the liquid preparation tank has a storage volume of 50m³.

10. A method for producing and rapidly filling high-concentration urine according to claim 9, characterized in that: The concentrated urine solution is prepared at a temperature of 90℃ and a concentration of 75%, while the low-pressure steam temperature is 120℃. The mixing tank has a storage volume of 50m³.

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