A fluid additive filling apparatus

Abstract

The application discloses a fluid additive filling device, which comprises a filling pump, a control valve and a mixing main pipeline, wherein the filling pump is used for providing driving force for the additive in each fluid channel from the additive inlet to the additive outlet; the additive outlet of each fluid channel is connected with a first output channel which is communicated with the mixing main pipeline and a second output channel which is communicated with the additive inlet of the fluid channel; the control valve is used for controlling the conduction or cut-off of the first output channel and the second output channel; the input end of the mixing main pipeline is used for inputting the fluid to be added, and the output end is used for outputting the mixed fluid. In the application, the additive filling is realized by simultaneously inputting the fluid to be added and the additive into the mixing main pipeline, so that time and labor are saved, special equipment is not needed, the cost of the filling device is lower, and the additive filling process is flexible and adjustable, thereby providing convenience for adding the additive into various fluids such as fuel oil or fuel gas.

Description

Technical Field

[0001] This invention relates to the field of fluid fuel technology, and in particular to a fluid additive dispensing device. Background Technology

[0002] Many fuels and additives, when used in combination, often exhibit better performance. For example, fuel additives can improve fuel quality and reduce emissions. Another example is the addition of anti-icing agents, antistatic agents, and high-heat stabilizers to jet fuel used in aircraft before use.

[0003] Currently, the conventional method for adding various fuel additives to fuel tanks involves manually or using an electric pump to apply sufficient pressure to the additive, which is then injected into the tank and circulated to ensure thorough mixing. Manual injection is inefficient, while electric injection requires specialized equipment, is costly, and lacks flexibility. Summary of the Invention

[0004] The purpose of this invention is to provide a fluid additive filling device that can reduce the difficulty of adding additives to fluid fuels to a certain extent and improve fuel performance.

[0005] To solve the above-mentioned technical problems, the present invention provides a fluid additive dispensing device, including a dispensing pump having at least two fluid channels inside, a control valve, and a mixing main pipeline;

[0006] Each of the fluid channels includes an additive inlet and an additive outlet; the injection pump is used to provide driving force for the additive in each of the fluid channels to flow from the additive inlet to the additive outlet;

[0007] Each fluid channel has an additive outlet connected to a first output channel and a second output channel; the first output channel is connected to the main mixing pipeline; the second output channel is connected to the additive inlet of the fluid channel; the control valve is installed on the first output channel and the second output channel to control the opening or closing of the first output channel and the second output channel; the input end of the main mixing pipeline is used to input the added fluid, and the output end is used to output the mixed fluid.

[0008] Optionally, the driving force in the injection pump that drives the additive flow in each of the fluid channels is different, so that the amount of additive flowing out of each fluid channel is not exactly the same.

[0009] Optionally, each fluid channel in the injection pump sequentially includes an inlet channel, a storage chamber, and an outlet channel; a first check valve is provided between the inlet channel and the storage chamber, which opens when the storage chamber is under negative pressure to allow the additive in the inlet channel to flow into the storage chamber, and closes when the storage chamber is under positive pressure; a second check valve is provided between the outlet channel and the storage chamber, which opens when the storage chamber is under positive pressure to allow the additive in the storage chamber to flow into the outlet channel, and closes when the storage chamber is under negative pressure;

[0010] The filling pump also includes a piston chamber that is in air communication with the storage chamber, and a piston connected to a piston rod is provided in the piston chamber. The piston rod is connected to a drive shaft. The drive shaft is used to drive the piston rod to drive the piston to compress or draw gas in the piston chamber, so as to change the gas pressure in the piston chamber.

[0011] The cross-sectional size of the piston chamber corresponding to each fluid channel is different along the moving direction of the piston rod, so that each piston rod moves the same distance, and the pressure change in the piston chamber corresponding to each fluid channel is different.

[0012] Optionally, within the same time period, the amount of additive flowing out of each of the different fluid channels is in a first predetermined ratio.

[0013] Optionally, it also includes a flow meter disposed on the mixing main pipeline for detecting the fluid flow rate within the mixing main pipeline;

[0014] The driving force provided by the injection pump to each of the fluid channels to drive the flow of the additive is in a second predetermined ratio with respect to the fluid flow rate measured by the flow meter.

[0015] Optionally, the flow meter is a volumetric flow meter;

[0016] The injection pump includes a drive shaft that provides driving force to drive the flow of additives in each of the fluid channels by rotation; the drive shaft is connected to the rotating shaft of the volumetric flow meter so that the drive shaft and the rotating shaft rotate synchronously according to a set speed ratio.

[0017] Optionally, the drive shaft and the rotating shaft are connected by a gear set.

[0018] Optionally, the control valve is a three-way valve disposed between the first output channel and the second output channel.

[0019] Optionally, a connecting channel is provided between the additive inlets of at least two of the fluid channels in the injection pump.

[0020] Optionally, a valve switch is provided in the connecting channel to control the connecting channel to be in a closed state or a connected state.

[0021] The present invention provides a fluid additive dispensing device, comprising a dispensing pump having at least two internal fluid channels, a control valve, and a mixing main pipeline; wherein, each fluid channel includes an additive inlet and an additive outlet; the dispensing pump is used to provide driving force for the additive in each fluid channel to flow from the additive inlet to the additive outlet; the additive outlet of each fluid channel is connected to a first output channel and a second output channel; the first output channel is connected to the mixing main pipeline; the second output channel is connected to the additive inlet of the fluid channel; the control valve is disposed on the first output channel and the second output channel, and is used to control the opening or closing of the first output channel and the second output channel; the input end of the mixing main pipeline is used to input the added fluid, and the output end is used to output the mixed fluid.

[0022] The fluid additive filling device provided in this application adds additives by simultaneously introducing the fluid to be added and the additive into the mixing main pipeline. This saves time and labor, eliminates the need for specialized equipment, and reduces the cost of the filling device. Furthermore, the additive flows into the mixing main pipeline through the fluid channel of the filling pump. On one hand, the filling pump provides the driving force for the additive to flow into the mixing main pipeline. On the other hand, the filling pump in this application has at least two fluid channels, allowing for the simultaneous injection of two different additives or double injection of the same additive. Each fluid channel has a first output channel connecting to the mixing main pipeline and a second output channel connecting to the additive inlet at its additive outlet. Control valves are installed on both the first and second output channels to control their opening and closing. This allows for adjustment of whether and how much additive is injected into the fluid, making the additive filling process flexible and adaptable, fully meeting various additive addition requirements, and providing convenience for adding additives to various fluids such as fuel oil or natural gas. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the frame of a fluid additive dispensing device provided in an embodiment of this application;

[0025] Figure 2 This is a schematic diagram of the filling pump provided in an embodiment of this application;

[0026] Figure 3 for Figure 2 A cross-sectional structural diagram of the filling pump. Detailed Implementation

[0027] In the process of adding additives to fluid fuels, if the fuel is a liquid-like substance such as fuel oil, adding the additive to the storage tank requires specialized adding equipment to overcome the resistance of the fuel oil inside the tank. Furthermore, to ensure the uniformity of the mixture between the fuel oil and the additive, specialized stirring equipment is also needed. The entire adding process is quite cumbersome, with complex equipment and high costs. For fuel substances such as natural gas, which are gaseous at room temperature, they are generally stored in high-pressure tanks or even compressed and cooled into a liquid state for storage. Adding additives to these requires increasing the gas pressure of the additives, which also contributes to the difficulty of adding additives.

[0028] As mentioned earlier, the conventional method of adding additives to fuel usually involves directly injecting the additive into the fuel storage tank, ensuring thorough mixing between the additive and fuel, and then filling it into the fuel storage compartments used in equipment such as vehicles or aircraft. Clearly, this method of injecting additives presents numerous challenges.

[0029] Therefore, this application considers that fuel and additives can be mixed during the process of filling the storage tank of vehicles or aircraft, so that the additives do not need to be mixed with excessive mixing pressure when mixed with fuel, and the fuel and additives are mixed together as they flow into the storage tank, thus eliminating the need for special stirring equipment and greatly reducing the difficulty of adding additives to fluid fuels.

[0030] To enable those skilled in the art to better understand the present invention, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are merely 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.

[0031] like Figures 1 to 3 As shown, Figure 1 A schematic diagram of the frame of a fluid additive dispensing device provided in an embodiment of this application; Figure 2 This is a schematic diagram of the filling pump provided in an embodiment of this application; Figure 3 for Figure 2A cross-sectional schematic diagram of the filling pump.

[0032] In one specific embodiment of this application, the fluid additive dispensing device may include:

[0033] The internal components include a filling pump 1 with at least two fluid channels 10, a control valve 2, and a mixing main pipe 3;

[0034] Each fluid channel 10 includes an additive inlet 11 and an additive outlet 12; the injection pump 1 is used to provide driving force for the additive in each fluid channel 10 to flow from the additive inlet 11 to the additive outlet 12.

[0035] Each fluid channel 10 has an additive outlet 12 connected to a first output channel 21 and a second output channel 22. The first output channel 21 is connected to the mixing main pipeline 3. The second output channel 22 is connected to the additive inlet 11 of the fluid channel 10. A control valve 2 is installed on the first output channel 21 and the second output channel 22 to control the opening or closing of the first output channel 21 and the second output channel 22. The input end 31 of the mixing main pipeline 3 is used to input the added fluid, and the output end 32 is used to output the mixed fluid.

[0036] Unlike conventional methods of adding additives to fluid fuels, the addition device provided in this embodiment allows the added fluid (i.e., fuel fluid) and the additive to flow together into the mixing main pipe 3. This allows the added fluid to be fully mixed with the additive as it flows through the mixing main pipe 3. As a result, uniform mixing between the added fluid and the additive can be achieved without the need for a stirring device, further simplifying the process of adding the additive to the added fluid.

[0037] Therefore, in this embodiment, the input end 31 of the mixing main pipeline 3 can be directly connected to the storage tank of the added fluid, while the output end 32 can be directly connected to the storage tank in a device that directly uses and consumes fuel, such as a vehicle or an airplane. Of course, the output end 32 can also be connected to another storage tank used for storing fuel, and this application does not impose any specific restrictions on this. In addition, to achieve mixing between the added fluid and the additive, an additive input end 30 needs to be further provided on the mixing main pipeline 3. This additive input end 30 is connected to the additive outlet 12 of each fluid channel 10 of the filling pump 1, so that the additive can flow into the mixing main pipeline 3 sequentially through the additive outlet 12 and the additive input end 30 after passing through each fluid channel 10.

[0038] by Figure 1For example, when the additive is driven by the injection pump 1, it enters the injection pump 1 through the additive inlet 11 of each fluid channel 10 and is output from the additive outlet 12. If the control valve 2 controls the first output channel 21 to be closed and the second output channel 22 to be open, the additive can flow back to the additive inlet 11 through the second output channel 22. If the control valve 2 controls the first output channel 21 to be open and the second output channel 22 to be closed, the additive can flow into the mixing main pipe 3 through the first output channel 21 and mix with the added fluid.

[0039] exist Figures 1 to 3 In the embodiments shown, the filling pump 1 is illustrated using two fluid channels 10 as an example. In practical applications, the filling pump 1 may have three, four, or even more fluid channels 10, and this application does not impose specific limitations on this. In embodiments where the filling pump 1 has multiple fluid channels 10, the filling pump 1 can, on the one hand, introduce different types of additives into each different fluid channel 10, thereby enabling the simultaneous addition of multiple different additives to the fluid being added; on the other hand, each fluid channel 10 has a first output channel 21 connected to the mixing main pipe 3 and a second output channel 22 connected to the additive inlet 11 of the fluid channel 10 at the additive outlet 12 position, and a control valve 2 is provided on the first output channel 21 and the second output channel 22; thereby controlling whether the additive needs to be adjusted after flowing out of the fluid channel 10. The amount of additive added to the main mixing pipe 3 is adjustable and can be set and adjusted according to the actual situation. Obviously, when the same additive is introduced into each fluid channel 10, the number of second output channels 22 corresponding to each fluid channel 10 directly determines the amount of additive added to the fluid. That is to say, in this embodiment, the opening and closing of the first output channel 21 and the second output channel 22 can be selectively controlled by the control valve 2 according to the actual situation, thereby achieving selective adjustment of the amount of additive added to the fluid to a certain extent and improving the flexibility and adjustability of the additive injection into the fluid.

[0040] For the control valve 2 configured on the first output channel 21 and the second output channel 22, in practical applications, it can be two two-way valves configured at one end of the first output channel 21 and the second output channel 22 respectively connected to the additive outlet 12 of the fluid channel 10, or it can be a three-way valve configured at the intersection of the first output channel 21, the second output channel 22, and the additive outlet 12. Taking the control valve 2 as a two-way valve as an example, in practical applications, each two-way valve can have only two states: open and closed. Furthermore, the open and closed states of the two-way valves on the first output channel 21 and the second output channel 22 are opposite, thus ensuring that the additive flows out of the additive outlet 12 and only exits through one of the first output channel 21 or the second output channel 22. Of course, in practical applications, it is also possible that both two-way valves have multiple opening positions, allowing part of the additive to flow into the first output channel 21 and part into the second output channel 22.

[0041] Furthermore, when the control valve 2 is a three-way valve, its input end can be connected to the additive inlet 11, and its two output ends are respectively connected to the first output channel 21 and the second output channel 22. This allows the additive to flow out from only one of the first output channel 21 and the second output channel 22, or for part of the additive to flow into the first output channel 21 and part into the second output channel 22; this is not specifically limited in this application.

[0042] Building upon this, to further increase the flexibility of adjusting the dosage ratio of the additive added to the fluid, in another optional embodiment of this application, it may further include:

[0043] The driving force driving the additive flow in each fluid channel 10 in the injection pump 1 is different, so that the amount of additive flowing out of each fluid channel 10 is not exactly the same.

[0044] As previously shown, the injection pump 1 provides the driving force for the additive in each fluid channel 10 to flow into the main mixing pipe 3. Therefore, the flow rate of the additive in each fluid channel 10 depends to a certain extent on the magnitude of the driving force provided by the injection pump 1 to each fluid channel 10. Since the driving force of the injection pump 1 for driving the additive in each fluid channel 10 is different, different injection amounts of additive can be introduced into the main mixing pipe 3 from each fluid channel 10.

[0045] For example, the filling pump 1 includes two fluid channels 10. When the first output channel 21 of the first fluid channel 10 is open and the second output channel 22 is closed, the additive filling ratio can be 1‰ of the fluid being added. When the first output channel 21 of the second fluid channel 10 is open and the second output channel 22 is closed, the additive filling ratio can be 2‰ of the fluid being added. When the same additive is simultaneously introduced into both fluid channels 10, three different filling ratios of 1‰, 2‰, and 3‰ can be selectively introduced into the fluid being added based on actual needs. These three different filling ratios can be adjusted at any time during the additive filling process, providing great convenience for adjusting the filling ratio and meeting various different requirements of the additives. Furthermore, when two different additives are introduced into the first and second fluid channels 10 respectively, the two additives can be added into the fluid at a 1:2 ratio, thus satisfying the requirement of adding different types of additives in specific proportions.

[0046] It is understood that when there are multiple fluid channels 10 in the filling pump 1, the driving force applied by the filling pump to the additives in each fluid channel 10 can be partially the same and partially different, so that the flow rate of the additives in some fluid channels 10 always maintains a 1:1 ratio, while the flow rate of the additives in other fluid channels 10 maintains a ratio similar to 1:2 or other ratios. This embodiment does not specifically limit this. Specifically, it can be set based on the type of additives that the filling pump 1 actually needs to fill and the required filling ratio of each additive in the added fluid.

[0047] Optionally, such as Figure 3 As shown, in another specific embodiment of this application, it may further include:

[0048] A connecting channel 14 is provided between the additive inlets 11 of at least two fluid channels 10 in the injection pump 1.

[0049] Therefore, when the additive inlets 11 of the two fluid channels 10 are connected to each other, in practical applications, the same additive can be injected into two different fluid channels 10 simultaneously by using only the additive inlet 11 of one of the fluid channels 10.

[0050] Of course, even if different additives are injected into the additive inlets 11 of the two fluid channels 10 respectively, the two additives will only mix in the connecting channel 14 and will not affect the flow of the two additives along their respective fluid channels 10.

[0051] In another optional embodiment of this application, a valve switch may be further provided on the communication channel 14. The valve switch can control the communication channel 14 to be in a closed state or a conductive state. Thus, when at least two fluid channels 10 connected to the communication channel 14 need to be injected with the same additive at the same time, the valve switch can be opened to keep the communication channel 14 conductive. Otherwise, the communication channel 14 is closed to keep it closed.

[0052] Based on any of the above embodiments, in an optional embodiment of this application, to realize the injection pump 1 that provides different driving forces to different fluid channels 10, it may include:

[0053] Each fluid channel 10 in the filling pump 1 includes an inlet channel 101, a storage chamber 110, and an outlet channel 102. A first check valve 103 is provided between the inlet channel 101 and the storage chamber 110. This valve opens when the storage chamber 110 is under negative pressure, allowing the additive in the inlet channel 101 to flow into the storage chamber 110, and closes when the storage chamber 110 is under positive pressure. A second check valve 104 is provided between the outlet channel 102 and the storage chamber 110. This valve opens when the storage chamber 110 is under positive pressure, allowing the additive in the storage chamber 110 to flow into the outlet channel 102, and closes when the storage chamber 110 is under negative pressure.

[0054] The filling pump 1 also includes a piston chamber 131 that is in gas communication with the storage chamber 110, and a piston 132 connected to the piston rod 133 is provided in the piston chamber 131. The piston rod 133 is connected to the drive shaft 13. The drive shaft 13 is used to drive the piston rod 133 to drive the piston 132 to squeeze or draw the gas in the piston chamber 131, so as to change the gas pressure in the piston chamber 131.

[0055] The piston chamber 131 corresponding to each fluid channel 10 has a different cross-sectional size along the moving direction of the piston rod 133, so that each piston rod 133 moves the same distance and the pressure change in the piston chamber 131 corresponding to each fluid channel 10 is different.

[0056] Reference Figure 2 and Figure 3 In this embodiment, the filling pump 1 uses the piston 132 to pump and pressurize the medium in the piston chamber 131, thereby changing the gas pressure in the piston chamber 131. This causes the gas pressure in the storage chamber 110, which is in air communication with the piston chamber 131, to change accordingly, and thus drives the additive flowing through the storage chamber 110.

[0057] For ease of understanding, the following will use... Figure 3The illustrated embodiment describes the process of an additive being driven to flow in a single-channel fluid passage 10. A first one-way valve 103 is provided between the inlet channel 101 and the storage chamber 110 of the fluid passage 10. Figure 3 In the illustrated embodiment, the first one-way valve may include a tapered through-hole 105, a ball valve 106, and a spring 107; wherein the spring 107 can always be in a compressed state, thereby pressing the ball valve 106 against the tapered through-hole 105, thus sealing the tapered through-hole 105; the tapered through-hole 105 is narrower on the side near the inlet channel 101 and wider on the side near the storage cavity 110. It should be noted that the tapered through-hole 105 is connected to the storage cavity 110 through the cavity accommodating the spring 107 (the connector fixing the spring 107 is provided with a large number of through holes). Figure 3 (Not shown in the image). Thus, when the storage chamber 110 is under positive pressure because the piston rod 133 drives the piston 132 to compress the medium (e.g., air) in the piston chamber 131, the air pressure forces the ball valve 106 into the conical through hole 105, thereby blocking the connection between the storage chamber 110 and the inlet channel 101, i.e., the first one-way valve 103 closes. When the storage chamber 110 is under negative pressure because the piston rod 133 drives the piston 132 to pump the medium in the piston chamber 131, all cavities connected to the storage chamber 110 are also under negative pressure. If the negative pressure is greater than the squeezing force of the spring 107 on the ball valve 106, the ball valve 106 can be disengaged from the conical through hole 105, thereby realizing the connection between the inlet channel 101 and the storage chamber 110, and causing the additive in the inlet channel 101 to be drawn into the storage chamber 110 by the negative pressure, thereby realizing the flow of the additive into the storage chamber 110.

[0058] Furthermore, the structural components of the second one-way valve 104 and the second one-way valve 103 can be similar to each other; however, the difference is that the tapered through-hole 105 of the second one-way valve 104 is thinner on the side near the storage cavity 110 and thicker on the side near the outlet channel. This allows the ball valve 106 to detach from the tapered through-hole 105 when the storage cavity 110 is under positive pressure, while the additive in the storage cavity 110 is squeezed through the tapered through-hole 105 and flows out to the outlet channel 102. When the storage cavity 110 is under negative pressure, the ball valve 106 is adsorbed in the tapered through-hole 105, and the storage cavity 110 and the outlet channel 102 are mutually blocked, thereby preventing the large additive in the outlet channel 102 from flowing back into the storage cavity 110.

[0059] The process by which piston 132 regulates the air pressure within storage chamber 110 will be further explained below. Figure 3In the illustrated embodiment, the piston chamber 131 containing the piston 132 and the piston rod 133 within the piston chamber 131 are both disposed through the storage chamber 110, thereby forming an annular cavity surrounding the piston rod 133 in the storage chamber 110 for the flow of additives. Figure 3 In the middle, the piston rod 133 can drive the piston 132 to move back and forth in the left and right direction, so as to Figure 3 Taking the fluid channel 10 on the left side as an example, when the piston rod 133 drives the piston 132 to move to the left, the space of the piston 132 connected to the storage cavity 110 on the left side of the piston 132 is reduced, which compresses the space in the storage cavity 110, thereby making the storage cavity 110 a positive pressure state; conversely, when the piston rod 133 drives the piston 132 to move to the right, the piston cavity 131 connected to the storage cavity 110 also increases, the medium in the connected space is pumped, thereby making the storage cavity 110 a negative pressure state.

[0060] Obviously, in the above embodiments, only... Figure 3 The structure of the first and second check valves shown is illustrated using examples. In practical applications, the first and second check valves can also adopt other structural forms, which will not be listed in this embodiment. Similarly, the piston rod 133, piston chamber 131, and other structures are not required to be completely identical. Figure 3 The structures shown are completely identical. For example, the piston rod 133 does not necessarily need to penetrate the storage cavity 110, as long as it can drive the piston 132 to pump and pressurize the medium in the storage cavity 110. In addition, the gas in the space connecting the piston cavity 131 and the storage cavity 110 does not necessarily have to be a medium, but can also be an inert gas such as nitrogen, to avoid oxidation reaction with the additives.

[0061] In addition, to drive the movement of the piston rod 133, a dedicated drive shaft 13 or similar structure can be installed inside the filling pump 1. Figure 3 In the embodiment shown, the drive shaft 13 is a crankshaft connected to a slider 130, and a piston rod 133 is symmetrically connected to each side of the slider 130. As the crankshaft drives the slider 130 to move back and forth, the two piston rods 133 can be driven to move back and forth. The crankshaft can be driven to rotate by a drive motor or other equipment, or it can be driven to rotate by other power sources. This embodiment does not specifically limit this.

[0062] Based on this, in order to achieve different flow rates of additives in each fluid channel 10, the cross-sectional size of each piston chamber 131 in the direction of piston rod 133 movement can be further set to be different. This will result in different volume changes in the space connected to the piston chamber 131 and the storage chamber 110 during the same distance movement of each piston rod 133, thereby leading to different pressure changes.

[0063] Of course, in practical applications, the different flow rates of additives in each fluid channel 10 are not limited to the above-mentioned method. For example, the same storage cavity 110 can be connected to two or even three piston cavities 131 at the same time, and the piston rod 133 in the piston cavity 131 connected to the same storage cavity 110 can simultaneously squeeze or pump the medium in the storage cavity 110. Furthermore, the number of piston cavities 131 connected to different storage cavities 110 can be different, thereby achieving different driving forces for the flow of additives in each fluid channel 10, which can also achieve different flow rates of additives to a certain extent.

[0064] Furthermore, in Figure 3 In the illustrated embodiment, two piston rods 133 are connected to the same slider 130. As the slider 130 rotates, the two piston rods 133 move synchronously at the same speed. However, the above is only one optional embodiment in this application. In practical applications, it is also possible to change the connection between the slider 130 and the piston rods 133, or even between the drive shaft 13 and the piston rods 133, so that the two piston rods 133 move at different speeds as driven by the drive shaft 13. For example, one piston rod 133 completes two stroke cycles of movement, while the other piston rod 133 only completes one stroke cycle. This allows the additive flow rate ratio in the two fluid channels 10 to be 2:1. Other embodiments exist that achieve different additive flow rates in each fluid channel 10, which will not be discussed in detail in this application.

[0065] Furthermore, the outflow rates of the additives in each of the different fluid channels 10 can be in a first predetermined ratio based on actual needs. This first predetermined ratio varies depending on the type of additive actually added, the type of fluid being added, etc., and is not specifically limited in this embodiment.

[0066] Based on the above discussion, the above embodiments all use a special mechanical mechanism to provide power to the additives in the fluid channel 10 to achieve different flow rates of additives in each fluid channel 10. To a certain extent, this can ensure the stability of the flow rate ratio of the additives output between each fluid channel 10. Compared with changing the flow rate of the additives by means of electric pump power, the flow rate control of the additives in each fluid channel 10 in this embodiment is more stable and precise.

[0067] Based on the above discussion, the amount of additive to the mixing main pipe 3 can be controlled by the injection pump 1. In order to further ensure the accuracy of the mixing ratio between the additive and the added fluid, in another optional embodiment of this application, a flow meter 33 for detecting the fluid flow rate in the mixing main pipe 3 can be further installed on the mixing main pipe 3.

[0068] The driving force provided by the injection pump 1 to each fluid channel 10 to drive the flow of additives is in a second set ratio with the fluid flow rate measured by the flow meter 33.

[0069] like Figure 1 As shown, in Figure 1 In the illustrated embodiment, the flow meter 33 is disposed on the side of the mixing main pipe 3 near the output end of the mixing main pipe 3. Therefore, the flow rate measured by the flow meter 33 is the flow rate of the mixed fluid output from the additive and the added fluid. It can be understood that the flow meter 33 can also be disposed on the side of the mixing main pipe 3 near the input end of the mixing main pipe 3, meaning that the flow meter 33 measures the flow rate of the added fluid flowing into the mixing main pipe 3.

[0070] Regardless of which part of the main mixing pipe 3 the flow meter 33 measures, as long as the driving force of the additive in the injection pump 1 is proportional to the flow rate of the fluid in the main mixing pipe 3, and the ratio between the flow rate and the driving force is set according to the mixing ratio requirements between the added fluid and the additive, the mixing ratio between the additive and the added fluid can be guaranteed to meet the requirements.

[0071] Based on this, another optional embodiment is also provided in this application, wherein the flow meter 33 is a volumetric flow meter;

[0072] The injection pump 1 includes a drive shaft 13 that provides driving force to drive the flow of additives in each fluid channel 10 by rotation; the drive shaft 13 is connected to the rotating shaft of a volumetric flow meter so that the drive shaft 13 and the rotating shaft rotate synchronously according to a set speed ratio.

[0073] Based on the basic structure of a volumetric flow meter, it is known that the volumetric flow meter has an impeller installed inside the main mixing pipe 3. This impeller rotates directly due to the flow of fluid within the main mixing pipe 3, and its rotational speed depends on the fluid velocity. Furthermore, the impeller's shaft can be connected to the drive shaft 13 in the injection pump 1, which drives the flow of additives in each fluid channel 10. This allows the flow meter 33's shaft to provide rotational power to the drive shaft 13 while ensuring synchronous rotation between the drive shaft 13 and the flow meter 33's shaft, with their speeds increasing and decreasing simultaneously and their speed ratio remaining constant. The impeller's rotational speed is directly proportional to the fluid velocity within the main mixing pipe 3, and the rotational speed of the drive shaft 13 in the injection pump 1 directly determines the force applied to the additives in each fluid channel 10, thus ensuring a fixed ratio between the driving force of the drive shaft 13 driving the additives in the fluid channel 10 and the fluid flow rate.

[0074] Based on the above embodiments, in practical applications, when different types of additives are added to the fluid, the ratio between the driving force applied by the injection pump 1 to the additive in the fluid channel 10 and the fluid flow rate in the mixing main pipe 3 also needs to be changed accordingly. To this end, in another optional embodiment of this application, the drive shaft 13 and the rotating shaft can be further connected by a speed-changing gear set. Thus, when the type of additive injected into the fluid channel 10 changes, or when the amount of additive needs to be changed based on the actual application, the gear connected between the drive shaft 13 and the rotating shaft can be switched to change the rotational speed ratio between the drive shaft 13 and the rotating shaft of the flow meter 33, thereby changing the ratio between the driving force applied by the drive shaft 13 to the additive and the fluid flow rate in the mixing main pipe 3 to meet various different needs in actual use.

[0075] In summary, the fluid additive filling device provided in this application achieves additive filling by simultaneously introducing the added fluid and additive into the mixing main pipeline. This saves time and labor, eliminates the need for specialized equipment, and reduces the cost of the filling device. Furthermore, the additive flows into the mixing main pipeline through the fluid channel of the filling pump. On one hand, the filling pump provides the driving force for the additive to flow into the mixing main pipeline. On the other hand, the filling pump in this application has at least two fluid channels, allowing for the simultaneous injection of two different additives or double injection of the same additive. Each fluid channel has a first output channel connecting to the mixing main pipeline and a second output channel connecting to the additive inlet at its additive outlet. Control valves are installed on both the first and second output channels to control their opening and closing. This allows for adjustment of whether and how much additive is injected into the added fluid, making the additive filling process flexible and adaptable, fully meeting various additive addition requirements, and providing convenience for adding additives to various fluids such as fuel oil or natural gas.

[0076] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that the elements inherent in a process, method, article, or apparatus that includes a list of elements are included. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. Additionally, portions of the technical solutions provided in the embodiments of this application that are consistent with the implementation principles of corresponding technical solutions in the prior art have not been described in detail to avoid excessive elaboration.

[0077] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A fluid additive dispensing device, characterized in that, This includes a filling pump with at least two internal fluid channels, a control valve, and a mixing main pipeline; Each of the fluid channels includes an additive inlet and an additive outlet; the injection pump is used to provide driving force for the additive in each of the fluid channels to flow from the additive inlet to the additive outlet; Each fluid channel has an additive outlet connected to a first output channel and a second output channel; the first output channel is connected to the main mixing pipeline; the second output channel is connected to the additive inlet of the fluid channel; the control valve is installed on the first output channel and the second output channel to control the opening or closing of the first output channel and the second output channel; the input end of the main mixing pipeline is used to input the added fluid, and the output end is used to output the mixed fluid. The driving force in the injection pump that drives the additive flow in each of the fluid channels is different, so that the amount of additive flowing out of each fluid channel is not exactly the same. Each fluid channel in the filling pump sequentially includes an inlet channel, a storage chamber, and an outlet channel. A first check valve is provided between the inlet channel and the storage chamber, which opens when the storage chamber is under negative pressure to allow the additive in the inlet channel to flow into the storage chamber, and closes when the storage chamber is under positive pressure. A second check valve is provided between the outlet channel and the storage chamber, which opens when the storage chamber is under positive pressure to allow the additive in the storage chamber to flow into the outlet channel, and closes when the storage chamber is under negative pressure. The filling pump also includes a piston chamber that is in air communication with the storage chamber, and a piston connected to a piston rod is provided in the piston chamber. The piston rod is connected to a drive shaft. The drive shaft is used to drive the piston rod to drive the piston to compress or draw gas in the piston chamber, so as to change the gas pressure in the piston chamber. The cross-sectional size of the piston chamber corresponding to each fluid channel is different along the moving direction of the piston rod, so that each piston rod moves the same distance, and the pressure change in the piston chamber corresponding to each fluid channel is different. The number of piston chambers connected to the different storage chambers is different, so that the driving force for the flow of additives in each fluid channel is different; It also includes a flow meter installed on the main mixing pipeline for detecting the flow rate of fluid within the main mixing pipeline; The driving force provided by the injection pump to each of the fluid channels to drive the flow of the additive is in a second predetermined ratio with respect to the fluid flow rate measured by the flow meter. The flow meter is a volumetric flow meter; The injection pump includes a drive shaft that provides a driving force to drive the flow of additives within each of the fluid channels by rotation; the drive shaft is connected to the rotating shaft of the volumetric flow meter so that the drive shaft and the rotating shaft rotate synchronously according to a set speed ratio; The drive shaft and the rotating shaft are connected by a gear set, which is used to change the speed ratio between the drive shaft and the rotating shaft.

2. The fluid additive dispensing device as described in claim 1, characterized in that, Within the same time period, the amount of additive flowing out of each of the different fluid channels is in a first predetermined ratio.

3. The fluid additive dispensing device as described in claim 1, characterized in that, The control valve is a three-way valve located between the first output channel and the second output channel.

4. The fluid additive dispensing device as described in claim 1, characterized in that, A connecting channel is provided between the additive inlets of at least two of the fluid channels in the injection pump.

5. The fluid additive dispensing device as described in claim 4, characterized in that, A valve switch is provided in the connecting channel to control the connecting channel to be in a closed state or a conductive state.

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