Working medium filling equipment

Abstract

The working medium filling equipment comprises a working medium preheating tank which is provided with a working medium heater, and the working medium heater is used for preheating a working medium in the working medium preheating tank; the preset heater is used for heating a filling workpiece, and the filling workpiece can receive filling of the working medium in the working medium preheating tank; the pressure adjusting module is used for adjusting the pressure in the filling workpiece; wherein the working medium preheating tank, the filling workpiece and the pressure adjusting module are converged at one point through pipelines, and flow path communication of the working medium is achieved. In this way, the working medium can be filled according to the temperature and the pressure, the density of the working medium in the closed container is controlled, and therefore the accurate filling amount is obtained.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of working medium filling devices, and particularly relates to a working medium filling device. BACKGROUND

[0002] The inventor understands that the devices for filling fluid into a closed container (including heat transfer devices such as heat pipes, etc.) are mostly quantitative. The filling method is mostly to fill from the interface of the closed container by mechanical force, and the amount of working medium liquid to be filled is determined by weighing or metering. Weighing is quantitative by weight. Metering is relatively broad, which can be measured by flow or volume.

[0003] A Chinese invention patent with publication number "CN111678267A" discloses "ultra-long gravity annular heat pipe geothermal extraction device and method". The invention patent includes a heat pipe main body and auxiliary equipment, and also includes a working medium filling meter. When operating, the ultra-long gravity annular heat pipe geothermal extraction device is installed in the borehole of the geothermal well, and a certain amount of liquid working medium is filled into the heat pipe through the medium filling meter. Whether the amount of liquid working medium filled into the heat pipe is too much or too little is controlled by the medium filling meter.

[0004] However, in some application scenarios, it is not convenient to arrange a meter to control the filling amount of working medium by weighing and metering, or to control the filling amount of working medium by weighing and metering using the meter, which has certain limitations in some cases. Such metering method often ignores the influence of the density of the fluid on metering, and the metered working medium may exhibit different densities and volumes due to different environments, so the accuracy of filling is not high. When filling some filling workpieces with inconsistent volumes, metering filling is also difficult to strictly meet the consistency requirement of filling. Practical new type content

[0005] The present application is made in view of the above-mentioned state of the art. In a first aspect, the present application provides a working medium filling device.

[0006] The technical solution adopted by the present application includes: a working medium preheating tank, which is equipped with a working medium heater for preheating the working medium in the working medium preheating tank; a preset heater for heating a filling workpiece, which can accept the filling of the working medium in the working medium preheating tank; a pressure regulating module for regulating the pressure inside the filling workpiece; wherein the working medium preheating tank, the filling workpiece, and the pressure regulating module respectively converge at one point through pipelines and realize the flow path communication of the working medium through a three-way device.

[0007] As a further improvement of the present application, the working medium heater and the preset heater are respectively connected with a heating control module, which can independently control the heating temperature or power of the working medium heater or the preset heater.

[0008] As a further improvement of the present application, the working medium preheating tank is connected with several working medium pumps, which can independently supply the working medium to the working medium preheating tank.

[0009] As a further improvement of the present application, the working medium preheating tank and the filling workpiece are connected with a filling pump, the filling direction of which is from the working medium preheating tank to the filling workpiece, and the pressure regulating module is connected with the downstream of the filling pump through a branch.

[0010] As a further improvement of the present application, the working medium preheating tank is connected with an air release valve and a first waste liquid discharge valve.

[0011] As a further improvement of the present application, the pipeline from the working medium preheating tank to the air release valve is partially shared with the pipeline from one of the working medium pumps to the working medium preheating tank.

[0012] As a further improvement of the present application, one end of the pressure regulating module is connected with a gas storage tank and a working medium recovery tank through two branches respectively.

[0013] As a further improvement of the present application, the upstream of the gas storage tank is connected with a working medium gas collection valve, and the downstream of the gas storage tank is connected with a working medium waste gas discharge valve; the upstream of the working medium recovery tank is connected with a working medium collection valve, and the downstream of the working medium recovery tank is connected with a second waste liquid discharge valve.

[0014] As a further improvement of the present application, the upstream and / or downstream of the working medium pump is connected with a maintenance valve.

[0015] As a further improvement of the present application, the working medium filling device comprises a general control module, which can monitor and control one or more of the temperature, pressure, heating power, opening and closing of the valve, and opening and closing of the pump.

[0016] The working medium filling device of the present application has the following advantages:

[0017] The application provides a device for filling based on temperature and pressure, which controls the density of the working medium in a sealed container by temperature and pressure, so as to obtain accurate filling amount. Compared with general weight and quantity filling devices, the application is a filling device based on temperature and pressure, and the interaction and change rule between temperature and pressure, i.e. the temperature-pressure relationship, can avoid the inaccuracy caused by different densities of the working medium. The working medium filling device can be applied in many fields with filling requirements, and has wide application range.

[0018] Firstly, the working medium heater and the working medium preheating tank are used for removing gas in the working medium, i.e. discharging the gas dissolved in the working medium. The working medium is heated, so that the dissolved gas in the working medium is released due to the violent molecular motion.

[0019] Secondly, the working medium heater and the working medium preheating tank can also shorten the heating time of the subsequent working medium. That is, the temperature of the working medium is first increased to a certain range, so that the heating time required for the subsequent continuous heating of the working medium is saved. At the same time, the heating causes the working medium molecules to move violently and expand, so that the pressure in the working medium preheating tank is increased, and the working medium in the working medium preheating tank is convenient for subsequent filling.

[0020] Thirdly, the filling workpiece is a device for receiving filling, and the preset heater and the filling workpiece are used for accurate heating. That is, the filling workpiece is also heated to a certain temperature. If the filling workpiece is not heated, the conventional method is to add the relatively hot working medium to the relatively cold filling workpiece, which will cause the temperature of the working medium to be lowered again during filling, which is not conducive to accurate temperature control. The accurate heating of the filling workpiece by the preset heater can greatly shorten the filling time, and is particularly suitable for occasions where there is a large specific heat container.

[0021] Finally, the pressure regulating module is used for regulating the pressure in the filling workpiece by pressure control and branch flow path, so as to selectively guide some gas and some working medium away, thereby regulating the pressure in the filling workpiece to maintain the preset pressure value and ensure that the filling of the working medium is always within the accurate range. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the technical solutions in the embodiments, the drawings of the embodiments will be briefly introduced as follows. Obviously, the drawings described below are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0023] Figure 1 is a structural schematic view of one embodiment of the working medium filling device of the application.

[0024] EXPLANATION OF REFERENCE NUMERALS

[0025] 1 - master control module; 2 - first working fluid source; 3 - second working fluid source; 4 - first heating control module; 5 - second heating control module; 6 - working fluid preheating tank; 7 - preheating heater; 8 - gas storage tank; 9 - working fluid recovery tank; 10 - pressure regulating module; 11 - first working fluid pump; 12 - filling pump; 13 - second working fluid pump; 14 - working fluid heater; 15 - first maintenance valve; 16 - second maintenance valve; 17 - third maintenance valve; 18 - fourth maintenance valve; 19 - fifth maintenance valve; 20 - sixth maintenance valve; 21 - first filling valve; 22 - second filling valve; 23 - first waste liquid discharge valve; 24 - second waste liquid discharge valve; 25 - air release valve; 26 - waste gas discharge valve; 27 - working fluid gas collection valve; 28 - working fluid collection valve; 29 - filling workpiece; 30 - three-way device. DETAILED DESCRIPTION

[0026] The exemplary embodiments of the present application will be described below with reference to the accompanying drawings. It should be understood that the specific description is only for teaching those skilled in the art how to implement the present application, and is not intended to exhaust all possible ways of the present application, nor to limit the scope of the present application.

[0027] The working fluid filling equipment of the present application will be further described in detail below in combination with specific examples.

[0028] Referring to Figure 1 The embodiments of the present application provide a working fluid filling equipment. The equipment includes a working fluid preheating tank 6 and a pressure regulating module 10. The working fluid preheating tank 6 is equipped with a working fluid heater 14 for preheating the working fluid in the working fluid preheating tank 6. In one example, the working fluid heater 14 preheats the working fluid preheating tank 6, and the working fluid is also preheated when the working fluid preheating tank 6 contains working fluid. A preheating heater 7 is used to heat the filling workpiece 29, and the working fluid is also heated when the filling workpiece 29 contains working fluid. The working fluid can be a working fluid capable of pressure or heat transfer. The filling workpiece 29 can accept the filling of the working fluid in the working fluid preheating tank 6. The pressure regulating module 10 is used to regulate the pressure inside the filling workpiece 29. The working fluid preheating tank 6, the filling workpiece 29, and the pressure regulating module 10 are respectively connected through a pipeline to a point, and the point of the working fluid preheating tank 6, the filling workpiece 29, and the pressure regulating module 10 is provided with a three-way device 30, which can realize the flow path communication of the working fluid.

[0029] The filling workpiece 29 is also connected with a filling docking nozzle, which can include filling head, filling movement device, filling needle, filling sealing device and other components, and the filling workpiece has the functions of opening and closing, moving, injecting, sealing, etc.

[0030] The filling workpiece 29 is a device to be filled. In practical applications, several filling workpieces 29 can be arranged in a pipeline, and the filling workpieces 29 can reach a designated position one by one in sequence and receive heating of the preset heater 7 and filling of the working medium in the working medium preheating tank 6.

[0031] In an embodiment, the number of working medium heaters 14 can be one or several. The working medium heater 14 can be arranged outside the working medium preheating tank 6 or inside the working medium preheating tank 6. The number of preset heaters 7 can be one or several. The working medium heater 14 and the preset heater 7 can be heated simultaneously or independently.

[0032] In an embodiment, the working medium heater 14 and the preset heater 7 are respectively connected with a heating control module, and the heating control module can independently control the heating temperature or power of the working medium heater 14 or the preset heater 7.

[0033] The beneficial effects of the above embodiment are that the working medium heater 14 and the preset heater 7 independently control the heating temperature or power, so that the heated temperatures of the working medium in the working medium preheating tank 6 and the filling workpiece 29 can be independently controlled. The heating control module can accurately adjust the preset temperature state, and the heating accuracy control of different heating control modules can be different. The heating control module can set the temperature control of the working medium to be filled, and the heating control module can accurately heat and control the temperature of the filling workpiece 29 according to the preset value.

[0034] In a non-limiting example, the heating control module includes a first heating control module 4 and a second heating control module 5. The first heating control module 4 controls the working medium heater 14, and the second heating control module 5 controls the preheating heater 7. The first heating control module 4 controls the working medium heater 14 to heat the working medium preheating tank 6. First, the heating facilitates the discharge of dissolved gas in the liquid working medium, which is independent of the specific temperature value of the filling. Secondly, the heating causes the molecular motion to be intense and the thermal expansion to have a certain pressure in the working medium preheating tank 6, which facilitates subsequent external filling.

[0035] In an embodiment, the working medium preheating tank 6 is connected with several working medium pumps, and the several working medium pumps supply the working medium to the working medium preheating tank 6 through independent pipelines.

[0036] The beneficial effects of the above embodiment are that the multiple working medium pumps can selectively input working medium of a certain component or mixed working medium of multiple components.

[0037] In a non-limiting example, the working medium pumps include a first working medium pump 11 and a second working medium pump 13, the first working medium pump 11 is connected with a first working medium source 2 upstream of the first working medium pump 11, the first working medium source 2 provides a first working medium, the second working medium pump 13 is connected with a second working medium source 3 upstream of the second working medium pump 13, and the second working medium source 3 provides a second working medium.

[0038] In an embodiment, a filling pump 12 is connected between the working medium preheating tank 6 and the filling workpiece 29, the filling direction of the filling pump 12 can be directed from the working medium preheating tank 6 to the filling workpiece 29, and the pressure regulating module 10 is connected downstream of the filling pump 12 through a branch. In addition, a sixth maintenance valve 20 can be arranged between the working medium preheating tank 6 and the filling pump 12.

[0039] The beneficial effect of the above embodiment is that the pressure regulating module 10 downstream of the working medium preheating tank 6 can control part of the working medium and part of the gas in the working medium preheating tank 6, thereby controlling the internal pressure of the receiving filling device (i.e., the filling workpiece 29).

[0040] In an embodiment, the working medium preheating tank 6 is connected with an air release valve 25 and a first waste liquid discharge valve 23.

[0041] The beneficial effect of the above embodiment is that: first, the working medium in the working medium preheating tank 6 can mix with gas; second, while filling the working medium preheating tank 6, gas can be mixed into the working medium preheating tank 6 from the filling port; and third, without vacuumizing, there is also gas in the hollow working medium preheating tank 6. Therefore, under various possible reasons, the air release valve 25 needs to be opened from time to time to discharge the gas. The first waste liquid discharge valve 23 is convenient for discharging excess liquid working medium in the working medium preheating tank 6 in the first place.

[0042] In an embodiment, the pipeline from the working medium preheating tank 6 to the air release valve 25 and the pipeline from one of the working medium pumps to the working medium preheating tank 6 are partially shared (i.e., partially overlapped). A third maintenance valve 17 can be installed on this partially shared pipeline. Specifically, the flow path from the first working medium source 2 to the working medium preheating tank 6 and the flow path from the working medium preheating tank 6 to the air release valve 25 are partially shared.

[0043] The beneficial effect of the above embodiment is that one air release valve 25 can be shared in this case, which is convenient for discharging the gas mixed in the working medium in some cases.

[0044] In an embodiment, the pressure regulating module 10 is connected with a gas storage tank 8 and a working medium recovery tank 9 through two branches at one end.

[0045] The beneficial effect of the above embodiment is that the part of gas and part of working medium branched out from the working medium preheating tank 6 can be respectively stored in the gas storage tank 8 and the working medium recovery tank 9. When needed, the working medium can be recycled, or it is also convenient to control the on-site operation environment, and convenient for subsequent processing or discharge.

[0046] In an embodiment, the upstream of the gas storage tank 8 is connected with a working medium gas collection valve 27, and the downstream of the gas storage tank 8 is connected with a working medium waste gas exhaust valve 26. The upstream of the working medium recovery tank 9 is connected with a working medium collection valve 28, and the downstream of the working medium recovery tank 9 is connected with a second waste liquid exhaust valve 24.

[0047] The beneficial effect of the above embodiment is that the upstream and downstream interfaces of the gas storage tank 8 and the working medium recovery tank 9 are respectively provided with valves, which is convenient for control of entry and discharge.

[0048] In an embodiment, the upstream and / or downstream of the working medium pump is connected with a maintenance valve.

[0049] The beneficial effect of the above embodiment is that the maintenance valve is provided for maintenance and isolation of the entire flow path system, and the maintenance valve can have the ability to control the flow path passage and break. It is convenient to repair and replace the working medium pump in time. The maintenance valve is in an open state in a normal state, but it is closed only when maintenance is needed.

[0050] In a non-limiting example, the upstream and downstream of the first working medium pump 11 are respectively connected with a first maintenance valve 15 and a second maintenance valve 16, and the upstream and downstream of the second working medium pump 13 are respectively connected with a fourth maintenance valve 18 and a fifth maintenance valve 19. In addition, the upstream of the working medium preheating tank 6 is also connected with a third maintenance valve 17.

[0051] In an embodiment, the specific heating form of the working medium heater 14 and the preset heater 7 can be various forms. For example, the working medium heater 14 is attached to the outer wall of the working medium preheating tank 6, and the preset heater 7 realizes multi-directional wrapping of the filling workpiece 29.

[0052] In an embodiment, the working medium filling equipment includes a total control module 1, which can realize monitoring and control of one or more of temperature, pressure, heating power, opening and closing of valves, and opening and closing of pumps.

[0053] The beneficial effect of the above embodiment is to improve the intelligence of the entire working medium filling equipment operation.

[0054] As Figure 1As shown, in an embodiment, the working medium source is provided, and the working medium source includes a first working medium source 2 and a second working medium source 3. The heating control module includes a first heating control module 4 and a second heating control module 5. The working medium pump includes a first working medium pump 11 and a second working medium pump 13. The maintenance valve includes a first maintenance valve 15, a second maintenance valve 16, a third maintenance valve 17, a fourth maintenance valve 18, a fifth maintenance valve 19, and a sixth maintenance valve 20. The waste liquid discharge valve is capable of discharging waste liquid, and the waste liquid discharge valve includes a first waste liquid discharge valve 23 and a second waste liquid discharge valve 24. Meanwhile, the application also includes a filling valve, and the filling valve includes a first filling valve 21 and a second filling valve 22. Along the flow path, the first filling valve 21 is arranged between the filling pump 12 and the filling workpiece 29, and the second filling valve 22 is arranged between the filling pump 12 and the pressure regulating module 10.

[0055] In a non-limiting example, the total control module 1 can be connected to multiple components by electrical signals. The specific control function aspects of the total control module 1 are as follows: 1) temperature control, including temperature control of the preheating heater 7, the working medium heater 14, and other heaters, and the working medium, and one or more test points are set for each component as needed, such as temperature monitoring and control using infrared imaging. 2) Pressure control, including pressure monitoring and control of the working medium preheating tank 6, the filling workpiece 29, and other related tanks and pipelines. 3) Heating power control, including power adjustment of the working medium heater 14 bound to the first heating control module 4 and the preheating heater 7 bound to the second heating control module 5. 4) Valve opening and closing control, including opening and closing control of the first maintenance valve 15, the second maintenance valve 16, the third maintenance valve 17, the fourth maintenance valve 18, the fifth maintenance valve 19, the sixth maintenance valve 20, the first waste liquid discharge valve 23, and the second waste liquid discharge valve 24. 5) Pump opening and closing control, including opening and closing control of the first working medium pump 11, the second working medium pump 13, and the filling pump 12. The total control module 1 can control various parameters.

[0056] As Figure 1As shown, there are multiple flow paths in the order along the flow path, and the flow paths can be named by the labels of the start component and the end component. The 2.6 flow path includes the first working medium 2, the first maintenance valve 15, the first working medium pump 11, the second maintenance valve 16, the third maintenance valve 17, and the working medium preheating tank 6. The 6.25 flow path includes the working medium preheating tank 6, the third maintenance valve 17, and the air release valve 25. The 3.6 flow path includes the second working medium source 3, the fifth maintenance valve 19, the second working medium pump 13, the fourth maintenance valve 18, and the working medium preheating tank 6. The 6.23 flow path includes the working medium preheating tank 6 and the first waste liquid discharge valve 23. The 6.29 flow path includes the working medium preheating tank 6, the sixth maintenance valve 20, the filling pump 12, the first filling valve 21, and the filling workpiece 29. The 6.26 flow path includes the working medium preheating tank 6, the sixth maintenance valve 20, the filling pump 12, the second filling valve 22, the pressure regulating module 10, the working medium gas collection valve 27, the gas storage tank 8, and the waste gas discharge valve 26. The 6.24 flow path includes the working medium preheating tank 6, the sixth maintenance valve 20, the filling pump 12, the second filling valve 22, the pressure regulating module 10, the working medium collection valve 28, the working medium recovery tank 9, and the second waste liquid discharge valve 24.

[0057] In one aspect, the application can also be a working medium filling device for a heat transfer device.

[0058] The above embodiments are only for illustrating the technical concept and characteristics of the application, and the purpose is to enable those skilled in the art to understand the content of the application and implement it, and cannot limit the protection scope of the application. Any equivalent changes or modifications made according to the spirit and essence of the application should be covered within the protection scope of the application.

Claims

1. A working fluid filling apparatus characterized by comprising: The utility model relates to a kind of gas filling equipment, including: Working medium preheating tank, the working medium preheating tank is equipped with working medium heater, and the working medium heater is used to preheat working medium in the working medium preheating tank; Preheater, the preheater is used to heat filling workpiece, and the filling workpiece can be filled with the working medium in the working medium preheating tank; Pressure regulating module, the pressure regulating module is used to adjust the pressure inside the filling workpiece; Wherein, the working medium preheating tank, the filling workpiece, the pressure regulating module respectively through pipeline converge in a point and realize the flow path intercommunication of the working medium by a three-way device.

2. The charge equipment of claim 1, wherein: The working medium heater, the preheater is respectively connected with heating control module, and the heating control module can independently control the heating temperature or power of the working medium heater or the preheater.

3. The charge equipment of claim 1, wherein: The working medium preheating tank is connected with several working medium pumps, and several working medium pumps can independently supply the working medium to the working medium preheating tank.

4. The charge equipment of claim 1, wherein: The working medium preheating tank and the filling workpiece are connected with filling pump, and the filling direction of the filling pump is from the working medium preheating tank to the filling workpiece, and the pressure regulating module is connected with downstream of the filling pump by branch.

5. The charge equipment of claim 3, wherein: The working medium preheating tank leads to air bleed valve, first waste liquid exhaust valve.

6. A charge equipment according to claim 5, characterized in that: The pipeline from the working medium preheating tank to the air bleed valve is partially shared with the pipeline from one of the working medium pumps to the working medium preheating tank.

7. The charge equipment of claim 1, wherein: One end of the pressure regulating module is connected with gas storage tank and working medium recovery tank by two branches respectively.

8. A charge equipment according to claim 7, characterised in that: The upstream of the gas storage tank is connected with working medium gas collection valve, and the downstream of the gas storage tank is connected with working medium waste gas exhaust valve; The upstream of the working medium recovery tank is connected with working medium collection valve, and the downstream of the working medium recovery tank is connected with second waste liquid exhaust valve.

9. The charge equipment of claim 3, wherein: The upstream and / or downstream of the working medium pump is connected with maintenance valve.

10. The charge equipment of any one of claims 1 to 9, wherein: The working medium filling equipment includes general control module, and the general control module can monitor and control one or more of temperature, pressure, heating power, opening and closing of valve, opening and closing of pump.

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