Steam pumping assembly
By designing a steam pumping assembly including a flexible medium capsule and a conduction pipeline, the problems of low accuracy and high cost of steam transport in the prior art are solved, and accurate steam volume transport and cost control are achieved.
Patent Information
- Application Number
- CN202421142666.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-05-23
AI Technical Summary
In the prior art, it is difficult to achieve accurate steam volume transportation and cost control when performing surgery with steam, especially when the liquid transportation pipeline is connected to the heating pipeline, there are problems of low accuracy and high cost.
A steam pumping assembly is designed, including a detachable connection of the housing unit and a conducting unit. The conducting unit has a flexible medium capsule and a conducting pipe. The housing unit is equipped with a driving unit and a sensor. Through the pressure transmission between the medium capsule and the receiving cavity, the precise delivery of vapor and cost control are achieved.
It realizes the reduction of costs while improving the accuracy of steam transport. The pressure is monitored in real time through sensors to ensure accurate control of steam volume, avoiding accuracy loss and specially customized costs.
Smart Images
Figure CN222657172U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to a vapor pumping assembly capable of reducing costs and improving vapor delivery accuracy. Background Art
[0002] The use of steam to perform surgery has become a common application. The existing technology uses, for example, a syringe to push liquid to the heating part to provide steam. The working state of the heating part affects the accuracy of the steam source liquid delivery, and there is a technical problem that the accuracy cannot be measured and the amount of steam cannot be accurately controlled. In the scenario where the liquid delivery pipeline is connected to the heating pipeline to generate steam, the boiling of steam will bring a reaction force to the liquid delivery pipeline. For the purpose of precise control, it is necessary to monitor this reaction force, which helps to understand the steam boiling situation in real time, thereby achieving accurate steam delivery.
[0003] One solution in the prior art is to set a pressure sensor at the end of the syringe (such as the plunger). In medical scenarios, this pressure sensor is made into a consumable and requires a specially customized syringe with a sensor at the end, which is costly. Another solution is to use a conventional syringe, but set the force sensor on the plunger of the syringe pump, and push the piston of the syringe through the plunger of the syringe pump. However, this indirect measurement method of measuring force through the plunger rod has a loss of accuracy and the measured value is inaccurate. Utility Model Content
[0004] The purpose of the present application is to provide a steam pumping assembly that can reduce costs and improve the accuracy of steam delivery. In order to achieve the above purpose, one scheme of the present application is a steam pumping assembly, which includes a detachably connected shell unit and a conduction unit; the conduction unit includes a flexible medium capsule and a conduction pipeline connected to the medium capsule; the shell unit includes a receiving cavity that can accommodate the medium capsule; in the working state, the medium capsule is located in the receiving cavity; the medium capsule and the conduction pipeline are filled with liquid working medium, and the end of the conduction pipeline away from the medium capsule is connected to a heating device, and the heating device is used to convert the working medium into steam; the receiving cavity is connected to a driving unit, and the driving unit is used to drive the fluid in the receiving cavity and then squeeze the medium capsule, so that the working medium in the medium capsule flows to the heating device.
[0005] According to the aforementioned technical solution, the working medium can be converted into steam after flowing to the heating device, thereby conveniently realizing the pumping of the steam.
[0006] In a preferred embodiment, when the heating device is not working, the fluid in the accommodating chamber is driven to flow and a reference pressure P of the fluid in the flow state is obtained; when the heating device is working, the fluid in the accommodating chamber is driven to flow and a real-time pressure P' of the fluid in the flow state is obtained; and the pressure of the vapor to be measured is determined based on the reference pressure P and the real-time pressure P'.
[0007] According to the aforementioned technical solution, the conduction unit is used as a consumable and the shell unit is used as a non-consumable, and pressure is transferred between the fluid in the accommodating chamber and the vapor to be tested through a flexible medium bag and its working medium, thereby reducing costs while ensuring detection accuracy.
[0008] In a preferred embodiment, the accommodating cavity comprises an opening for the medium bag to enter and exit; after the medium bag is placed in the accommodating cavity, the opening is sealed and a fluid is injected into the accommodating cavity.
[0009] According to the above technical solution, the matching and sealing between the medium bag and the accommodating cavity can be easily achieved, so as to facilitate the subsequent pumping and pressure measurement.
[0010] In a preferred embodiment, the housing unit includes a sensor for detecting the pressure of the fluid in the accommodating chamber; after the medium capsule is placed in the accommodating chamber, the sensor is located outside the medium capsule.
[0011] According to the above technical solution, the sensor is arranged in the housing unit, and does not serve as a consumable together with the medium capsule, and does not need to be specially customized, thus saving equipment costs.
[0012] In a preferred embodiment, the conduction unit comprises a sealing cover connected to the conduction pipeline; after the medium capsule is placed in the accommodating cavity, the sealing cover is matched and connected with the cavity opening to seal the accommodating cavity.
[0013] According to the aforementioned technical solution, the fluid can be injected into the accommodating cavity only after the accommodating cavity is sealed, and the pressure is transmitted by the fluid in the sealed space.
[0014] In a preferred embodiment, the sealing cover is made of elastic material; after the sealing cover is matched and connected with the cavity opening, a rigid cover is abutted on a side of the sealing cover away from the accommodating cavity to prevent the sealing cover from being deformed.
[0015] According to the aforementioned technical solution, it is possible to avoid the sealing cover from being deformed by pressure, thereby preventing the detection accuracy from being affected.
[0016] In a preferred embodiment, the rigid cover comprises a first sub-cover and a second sub-cover that are detachable.
[0017] According to the aforementioned technical solution, the rigid cover can be easily assembled and disassembled.
[0018] In a preferred embodiment, the shell unit includes a pressure relief valve connected to the accommodating chamber; after the cavity mouth is sealed, the pressure relief valve is opened when fluid is injected into the accommodating chamber to discharge air retained in the accommodating chamber through the pressure relief valve; and the pressure relief valve is closed after the injection is completed.
[0019] According to the aforementioned technical solution, the air retained in the accommodating cavity can be discharged in time to ensure the accuracy of detection.
[0020] In a preferred embodiment, the driving unit comprises a pushing mechanism disposed in the accommodating chamber and a power source connected to the pushing mechanism; the pushing mechanism can push the fluid in the accommodating chamber and thereby compress the medium capsule under the drive of the power source.
[0021] According to the aforementioned technical solution, the driving solution has low cost and is stable and reliable.
[0022] In a preferred embodiment, the driving unit includes a driving pump disposed outside the accommodating chamber, the driving pump is connected to the accommodating chamber via a driving pipeline, and in a working state, the driving pump pushes the fluid in the accommodating chamber via the driving pipeline to compress the medium bag.
[0023] According to the aforementioned technical solution, the driving pump directly drives the fluid, which can improve the driving efficiency and simplify the equipment structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the present application, the drawings of the specification of the present application will be described and illustrated below. Obviously, the drawings in the following description only illustrate certain aspects of some exemplary embodiments of the present application, and it is possible for a person of ordinary skill in the art to obtain other drawings based on these drawings without creative work.
[0025] Figure 1 It is a structural schematic diagram of the first embodiment of the steam pumping component.
[0026] Figure 2 It is a schematic structural diagram of a second embodiment of a steam pumping assembly.
[0027] Figure 3 is a schematic diagram of the assembly of the rigid cover.
[0028] Caption of the attached figure:
[0029] 1 Conducting unit
[0030] 11 Media capsule
[0031] 12 Conducting pipeline
[0032] 13 Sealing cover
[0033] 130 Sealing cover body
[0034] 131 Sealing cover extension
[0035] 14 Rigid cover
[0036] 141 First Point Cover
[0037] 142 Second Point Block
[0038] 2 Shell elements
[0039] 20 Cavity
[0040] 21 Housing
[0041] 22 Accommodation cavity
[0042] 23 Sensors
[0043] 24 Pressure relief valve
[0044] 3 Drivers
[0045] 31 Motor
[0046] 32 Piston rod
[0047] 33 Piston
[0048] 34 Drive pump
[0049] 35 drive pipeline DETAILED DESCRIPTION
[0050] Various exemplary embodiments of the present application are described in detail below with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is by no means intended to limit the present application and its application or use. The present application can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present application thorough and complete and to fully express the scope of the present application to those skilled in the art. It should be noted that unless otherwise stated, the relative arrangement of the components and steps, numerical expressions, and numerical values, etc., described in these embodiments should be interpreted as being merely exemplary, rather than as limitations.
[0051] The words “include” or “comprising” and the like used in this application mean that the elements preceding the words include the elements listed after the words, and do not exclude the possibility of also including other elements.
[0052] All terms (including technical terms or scientific terms) used in this application have the same meaning as those understood by ordinary technicians in the field to which this application belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be understood to have meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined in this article.
[0053] Components not described in detail in this section, parameters such as specific models of components, relationships between components, and control circuits may be considered as technologies, methods, and equipment known to ordinary technicians in the relevant fields, but in appropriate circumstances, such technologies, methods, and equipment should be considered as part of the specification.
[0054] Overall structure
[0055] The following reference Figure 1-3 The composition of the vapor pumping assembly of the present application is described. Figure 1 is a schematic structural diagram of a first embodiment of a vapor pumping assembly, Figure 2 is a schematic diagram of the structure of the second embodiment of the steam pumping assembly, Figure 3 is a schematic diagram of the assembly of the rigid cover.
[0056] The steam pumping assembly of the present application comprises a detachably connected conducting unit 1 and a housing unit 2. The conducting unit 1 comprises a flexible medium capsule 11 and a conducting pipe 12 connected to the medium capsule 11. Preferably, the pipe wall of the conducting pipe 12 is rigid to avoid deformation under pressure and affect the detection accuracy. It can be a metal pipe or a hard plastic pipe or other materials that can withstand a certain pressure, which is not specifically limited here.
[0057] The housing unit 2 includes a housing 21 and a receiving chamber 22 surrounded by the housing 21 and capable of receiving the medium capsule 11. The receiving chamber 22 includes a cavity 20 for the medium capsule 11 to enter and exit. The receiving chamber 22 is also connected to the driving unit 3. In one embodiment, the driving unit 3 includes a motor 31 as a power source, a piston 33 as a propulsion mechanism located in the receiving chamber 22, and a piston rod 32 connected between the piston 33 and the motor 31.
[0058] For the sake of convenience, the direction of the medium capsule 11 relative to the accommodating cavity 22 in the figure is taken as the front-to-back direction, and the direction perpendicular to the front-to-back direction is taken as the lateral direction. Figure 1 The conductive unit 1, the housing unit 2 and the driving unit 3 are arranged from front to back. In fact, the relative position relationship of the three units is not limited to this. For example, the driving unit 3 can be located on the lateral side of the housing unit 2, as long as it can drive the liquid in the accommodating chamber 22. No further details are given here.
[0059] The housing 21 is a rigid structure to avoid deformation under pressure and affect the detection accuracy. The shape of the housing 21 is not specifically limited here, and can be cylindrical, or have a polygonal cross section or other structures that can form the accommodating cavity 22, as long as the accommodating cavity 22 can accommodate the medium capsule 11.
[0060] In the working state, the medium capsule 11 and the conducting pipe 12 are filled with liquid working medium, and the end of the conducting pipe 12 away from the medium capsule 11, i.e., the front end, is connected to a heating device (not shown in the figure). As an example, the working medium is liquid water, but it is not limited thereto, and can also be liquid medicine, etc.
[0061] After the medium capsule 11 is placed in the accommodating chamber 22, the cavity opening 20 is sealed and a fluid is injected into the accommodating chamber 22. As an example, the fluid is a liquid, such as water, but is not limited thereto. The driving unit 3 is used to drive the fluid in the accommodating chamber 22 to move forward, thereby compressing the medium capsule 11 through the fluid, so that the working medium flows forward along the conducting pipe 12 toward the heating device.
[0062] The medium bag 11 is made of a flexible material, for example, a water bag. Under the pressure of the fluid in the accommodating chamber 22, the medium bag 11 is deformed and the space inside it is compressed, so that at least a part of the working medium in the medium bag 11 is squeezed out and flows to the heating device.
[0063] In actual application scenarios, the heating device heats the working medium to boiling and converts it into steam, and the generated steam is transported to a predetermined location and can be used to ablate tissue, etc. Since the steam generated by the boiling working medium at the end of the heating device has a certain pressure, it brings a reaction force to the working medium in the conductive pipeline 12, causing the liquid pressure in the accommodating chamber 22 to change relative to the reference pressure. By monitoring the real-time pressure of the liquid in the accommodating chamber 22, the pressure of the steam to be tested can be determined in real time, which helps to monitor the steam conversion situation and thus realize the precise delivery of the control working medium.
[0064] In the present application, the conduction unit 1 and the shell unit 2 are designed to be detachably connected, wherein the conduction unit 1 is used as a disposable consumable, the shell unit 2 is reusable, and the sensor 23 is located inside the shell unit 2, which not only reduces material consumption but also does not require special customization, thereby reducing costs while ensuring the accuracy of steam pressure measurement.
[0065] The housing unit 2 is provided with a sensor 23 for detecting the pressure of the fluid in the accommodating chamber 22. The specific position thereof is not specifically limited, but after the medium capsule 11 is placed in the accommodating chamber 22, the sensor 23 must be located outside the medium capsule 11, for example, the sensor 23 is provided on the inner wall of the housing 21, so that the pressure of the fluid in the accommodating chamber 22 can be detected, and the sensor 23 does not need to be treated as a consumable together with the medium capsule 11.
[0066] It can be understood that the fluid pressure measured by the sensor 23 reflects the superposition of the fluid resistance encountered by the piston 33 when it is pushed forward and the reaction force exerted by the vapor to be measured on the working medium in the conducting pipe 12. After the equipment specifications are determined, the fluid resistance encountered by the piston 33 when it is pushed forward can be considered to be constant, and then the pressure of the vapor to be measured can be obtained according to the change of the fluid pressure measured by the sensor 23.
[0067] Specifically, when the specifications of the accommodating chamber 22 and the conducting pipeline 12 are determined and the control parameters of the motor 31 remain unchanged, when the heating device is not working, the driving unit 3 drives the fluid in the accommodating chamber 22 to flow forward, and obtains the reference pressure P of the fluid in the flow state through the sensor 23. The reference pressure P reflects the flow resistance when the piston 33 pushes the fluid to flow in a certain state (for example, a certain speed); then, when the heating device is working, the steam generated by the boiling of the working medium at the end of the heating device is discharged from the pipeline outlet and also generates a reaction force on the working medium in the conducting pipeline 12. The magnitude of the reaction force is positively correlated with the rate of steam generation. The reaction force will be transmitted to the fluid in the accommodating chamber 22 through the medium bag 11. When the driving unit 3 drives the fluid in the accommodating chamber 22 to move forward, the real-time pressure P' of the fluid is obtained through the sensor 23. The real-time pressure P' reflects the superposition of the fluid resistance suffered by the piston 33 and the reaction force exerted by the steam at the end of the heating device on the working medium.
[0068] It can be understood that when the heating device is in working state, usually P'>P, the pressure of the steam at the end of the heating device can be obtained based on the reference pressure P and the real-time pressure P', and then the steam generation rate can be determined. Specifically, according to ΔP=P'-P, the pressure of the steam at the end of the heating device can be obtained, and then the information on the boiling condition of the working medium can be obtained, and the steam generation rate can be monitored to see if it is within the expected range, and the control of the pump or heating pipeline can be further started according to the monitoring results to improve the accuracy of steam delivery.
[0069] In addition, the solution of the present application can also be used to monitor abnormal conditions such as pipeline leakage. For example, when the transmission pipeline 12 leaks, the situation of P'<P will occur, and it can be determined that the pipeline is abnormal.
[0070] As a preferred embodiment, the conducting unit 1 comprises a sealing cover 13 connected to the conducting pipeline 12, and the sealing cover 13 is located on the side of the medium capsule 11 facing the conducting pipeline 12. After the medium capsule 11 is placed in the accommodating cavity 22, the sealing cover 13 is matched and connected with the cavity opening 20 to seal the accommodating cavity 22.
[0071] Preferably, the sealing cover 13 is made of elastic material. As an example, the sealing cover 13 includes a sealing cover body 130 adapted to the cavity opening 20 and a sealing cover extension 131 surrounding the sealing cover body 130 and extending toward one side of the medium capsule 11. After the sealing cover 13 is matched and connected with the cavity opening 20, the elastic sealing cover extension 131 is used to seal the accommodating cavity 22.
[0072] In addition, if Figure 3 As shown, in order to prevent the sealing cover 13 from being deformed by the pressure of the fluid in the accommodating chamber 22, thereby affecting the accuracy of the pressure measurement, after the sealing cover 13 is matched and connected with the cavity opening 20, a rigid cover 14 is abutted on the side of the sealing cover 13 away from the accommodating chamber 22, i.e., the front side. The shape and size of the rigid cover 14 are consistent with the shape and size of the sealing cover body 130, so as to prevent the sealing cover 13 from being deformed by pressure. The rigid cover 14 can be a one-piece type, but is preferably a split type spliced together, including a detachable first sub-cover 141 and a second sub-cover 142.
[0073] As a preferred embodiment, the housing unit 2 includes a pressure relief valve 24 connected to the accommodating chamber 22. After the cavity opening 20 is sealed, the pressure relief valve 24 is opened when fluid is injected into the accommodating chamber 22, so that the air retained in the accommodating chamber 22 is discharged through the pressure relief valve 24; after the fluid injection is completed, the pressure relief valve 24 is closed to ensure the sealing of the accommodating chamber 22.
[0074] In addition, if Figure 2 As shown, in another embodiment, the driving unit 3 includes a driving pump 34 disposed outside the accommodating chamber 22, the driving pump 34 is connected to the accommodating chamber 22 via a driving pipeline 35, and the fluid in the accommodating chamber 22 is connected to the driving pump 34 via the driving pipeline 35. In the working state, the driving pump 34 directly drives the fluid in the accommodating chamber 22 to move forward via the fluid in the driving pipeline 35, thereby compressing the medium bag 11.
[0075] In summary, the present application uses the conduction unit 1 as a consumable and the housing unit 2 as a non-consumable, and the sensor 23 is arranged in the housing unit 2, which does not require special customization, reduces material waste, and reduces equipment costs. At the same time, the working medium in the medium capsule 11 and the liquid in the accommodating chamber 22 are used for flexible force transmission, and the precision loss is small, so that the steam pressure at the heating device end can be accurately detected in real time, which is conducive to realizing accurate steam delivery.
[0076] It should be understood that the specific embodiments described above are only used to explain the present application, and the protection scope of the present application is not limited thereto. Any technical personnel familiar with the technical field can make changes, substitutions, and combinations within the technical scope disclosed in the present application according to the technical solution and concept of the present application, which should be covered by the protection scope of the present application.
Claims
1. A vapor pumping assembly, comprising a detachably connected housing unit and a conducting unit; characterized in that: The conduction unit comprises a flexible medium bag and a conduction pipeline connected with the medium bag; The housing unit comprises a receiving cavity capable of receiving the medium capsule; In the working state, the medium bag is located in the accommodating cavity filled with fluid; the medium bag and the conducting pipeline are filled with liquid working medium, and the end of the conducting pipeline away from the medium bag is connected to a heating device, and the heating device is used to convert the working medium into steam; The accommodating chamber is connected to a driving unit, and the driving unit is used to drive the fluid in the accommodating chamber to squeeze the medium bag, so that the working medium in the medium bag flows to the heating device and is converted into steam by the heating device.
2. The vapor pumping assembly according to claim 1, characterized in that: When the heating device is not working, the fluid in the accommodating chamber is driven to flow and a reference pressure P of the fluid in the flow state is obtained; when the heating device is working, the fluid in the accommodating chamber is driven to flow and a real-time pressure P' of the fluid in the flow state is obtained; the pressure of the vapor to be measured is determined based on the reference pressure P and the real-time pressure P'.
3. The vapor pumping assembly according to claim 1, characterized in that: The accommodating cavity comprises a cavity opening for the medium bag to enter and exit; After the medium bag is placed in the accommodating cavity, the cavity opening is sealed and a fluid is injected into the accommodating cavity.
4. The vapor pumping assembly according to claim 1, characterized in that: The housing unit includes a sensor for detecting the pressure of the fluid in the accommodating chamber; After the medium capsule is placed in the accommodating cavity, the sensor is located outside the medium capsule.
5. The vapor pumping assembly according to claim 3, characterized in that: The conducting unit comprises a sealing cover connected to the conducting pipeline; After the medium bag is placed in the accommodating cavity, the sealing cover is matched and connected with the cavity opening to seal the accommodating cavity.
6. The vapor pumping assembly according to claim 5, characterized in that: The sealing cover is made of elastic material; after the sealing cover is matched and connected with the cavity opening, a rigid cover is abutted on one side of the sealing cover away from the accommodating cavity to prevent the sealing cover from being deformed.
7. The vapor pumping assembly according to claim 6, characterized in that: The rigid cover comprises a first sub-cover and a second sub-cover which are detachable.
8. The vapor pumping assembly of claim 3, wherein: The housing unit includes a pressure relief valve in communication with the accommodating chamber; After the cavity opening is sealed, the pressure relief valve is opened when fluid is injected into the accommodating cavity, so that the air retained in the accommodating cavity is discharged through the pressure relief valve; After the injection is completed, close the pressure relief valve.
9. A vapor pumping assembly according to any one of claims 1 to 8, characterized in that: The driving unit comprises a driving mechanism disposed in the accommodating cavity and a power source connected to the driving mechanism; The pushing mechanism can push the fluid in the accommodating chamber under the drive of the power source to compress the medium bag.
10. The vapor pumping assembly according to any one of claims 1 to 8, characterized in that: The driving unit includes a driving pump disposed outside the accommodating chamber, the driving pump is connected to the accommodating chamber via a driving pipeline, and in a working state, the driving pump pushes the fluid in the accommodating chamber via the driving pipeline to compress the medium bag.