CN217926580U - Differential pressure type fluid diode - Google Patents
Differential pressure type fluid diode Download PDFInfo
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- CN217926580U CN217926580U CN202221970678.9U CN202221970678U CN217926580U CN 217926580 U CN217926580 U CN 217926580U CN 202221970678 U CN202221970678 U CN 202221970678U CN 217926580 U CN217926580 U CN 217926580U
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Abstract
A differential pressure type fluid diode relates to the technical field of control or regulation systems of non-electric variables, and comprises: the top of the air pressure adjusting box is communicated with an air charging and discharging device. The inlet tube has vertical section, and vertical section is inserted and is located the bottom surface of atmospheric pressure regulating box, and the top of vertical section has one section distance with the top surface of atmospheric pressure regulating box, and the biggest cross-sectional area of vertical section is less than the cross-sectional area of atmospheric pressure regulating box. The water outlet pipe is arranged at the bottom of the air pressure adjusting box and communicated with the air pressure adjusting box. The inlet tube of this application embodiment is the upper reaches mouth for the outlet pipe, and the outlet pipe is the low reaches mouth. And when the water body reversely flows back to the air pressure adjusting box from the water outlet pipe, the air pressure in the air pressure adjusting box is increased, so that the water body in the water inlet pipe reversely flows through the water inlet pipe. In the process, air is arranged between the water body in the water inlet pipe and the water body in the water outlet pipe, so that the downstream water body and the upstream water body are completely separated.
Description
Technical Field
The present application relates to the field of non-electrical variable control or regulation systems, and more particularly to a differential pressure type fluid diode.
Background
In the fields of chemical engineering and nuclear waste treatment, flow instability and even backflow caused by pressure fluctuation in a flow system can cause pollution of a downstream low-water-quality water body to an upstream clean water body. Therefore, it is often necessary to consider a check in the design process, i.e., isolating the downstream body of water from the upstream body of water. In the related art, the fluid diode, the check valve, and the like cannot completely stop the reverse flow, and thus the downstream water body and the upstream water body cannot be completely separated.
Disclosure of Invention
The embodiment of the application provides a differential pressure type fluid diode to solve the problem that a downstream water body and an upstream water body cannot be completely separated in the related art.
A differential pressure fluid diode, comprising:
the top of the air pressure adjusting box is communicated with an air charging and discharging device;
the water inlet pipe is provided with a vertical section, the vertical section is inserted into the bottom surface of the air pressure adjusting box, the top end of the vertical section has a certain distance with the top surface of the air pressure adjusting box, and the maximum cross-sectional area of the vertical section is smaller than that of the air pressure adjusting box;
and the water outlet pipe is arranged at the bottom of the air pressure adjusting box and communicated with the air pressure adjusting box.
Furthermore, differential pressure type fluid diode still includes trachea and air pressure regulating valve, tracheal one end with the top surface intercommunication of air pressure regulating box, the other end with aerify the exhaust apparatus intercommunication, air pressure regulating valve set up in the trachea for control tracheal break-make.
Furthermore, the water inlet pipe is a U-shaped pipe, one arm of the water inlet pipe is a vertical section, the arm is inserted into the bottom surface of the air pressure adjusting box, and the other arm is positioned on the outer side of the air pressure adjusting box.
Furthermore, the diameters of all the positions of the water inlet pipe are the same, and the diameters of all the positions of the water outlet pipe are the same.
Furthermore, the diameter of the water inlet pipe is equal to that of the water outlet pipe.
Further, the distance between the top end of the vertical section of the water inlet pipe and the top surface of the air pressure adjusting box is not less than 1.5 times of the diameter of the vertical section.
Furthermore, the differential pressure type fluid diode further comprises a control module, wherein the control module is in communication connection with the air charging and discharging device and is used for controlling the on-off of the air charging and discharging device.
Further, the axis of the vertical section is perpendicular to and intersects with the axis of the water outlet pipe.
Furthermore, a sealing ring is arranged at the communication position of the water inlet pipe and the air pressure adjusting box.
Furthermore, the air pressure adjusting box is of a cylindrical structure, and the vertical section of the water inlet pipe and the air pressure adjusting box are coaxially arranged.
The beneficial effect that technical scheme that this application provided brought includes:
the embodiment of the application provides a differential fluid diode, and it includes atmospheric pressure regulating box, inlet tube and outlet pipe, and wherein, the inlet tube is the upper reaches mouth for the outlet pipe, and the outlet pipe is the low reaches mouth. The air pressure adjusting box is inflated in advance, when water reversely flows back to the air pressure adjusting box from the water outlet pipe, air pressure in the air pressure adjusting box is increased, and gas in the air pressure adjusting box enters the vertical section of the water inlet pipe, so that the water in the water inlet pipe reversely flows through the water inlet pipe. In the process, air is arranged between the water body in the water inlet pipe and the water body in the water outlet pipe, so that the water body in the water inlet pipe and the water body in the water outlet pipe are not fused or contacted all the time, and the downstream water body and the upstream water body are completely separated.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic overall structure diagram of an embodiment of the present application;
fig. 2 is a schematic top view of fig. 1.
Reference numerals:
1. a water inlet pipe; 11. a vertical section; 2. an air pressure adjusting box; 3. a water outlet pipe; 4. an air tube; 5. an air pressure regulating valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a differential pressure type fluid diode, which can solve the problem that a downstream water body and an upstream water body cannot be completely separated in the related technology.
As shown in fig. 1, a differential pressure type fluid diode includes a pressure regulating tank 2, a water inlet pipe 1 and a water outlet pipe 3.
Wherein, the top of the air pressure adjusting box 2 is communicated with an air charging and discharging device. The inlet tube 1 has a vertical section 11, and the bottom surface of atmospheric pressure regulating box 2 is located in inserting of vertical section 11, and the top of vertical section 11 and the top surface of atmospheric pressure regulating box 2 have a distance, and the maximum cross-sectional area of vertical section 11 is less than the cross-sectional area of atmospheric pressure regulating box 2. The water outlet pipe 3 is arranged at the bottom of the air pressure adjusting box 2, and the water outlet pipe 3 is communicated with the air pressure adjusting box 2.
Specifically, in the embodiment of the present application, the inflation/deflation device is an air pump, which can inflate the air pressure adjustment box 2 and also can exhaust the air inside the air pressure adjustment box 2. When the inside water of pneumatic control case 2 was filled up, can fill gas in pneumatic control case 2 through filling exhaust apparatus, when pneumatic control case 2 is inside to be the vacant state, can exhaust to pneumatic control case 2 inside through filling exhaust apparatus, above-mentioned in-process, no matter aerify to the inside of pneumatic control case 2, still with the gaseous discharge of the inside of pneumatic control case 2, all be for the gas capacity through the inside of control pneumatic control case 2, make the liquid level of the inside water of pneumatic control case 2 be in preset position, should preset position can be according to the backward flow volume of water, factor such as the length of the vertical section 11 of inlet tube 1 calculates.
Specifically, the water inlet pipe 1 may be a straight pipe or a bent pipe, but the water inlet pipe 1 has a vertical section 11. When the water body flows back, a part of gas in the air pressure adjusting box 2 enters the inside of the vertical section 11 of the water inlet pipe 1, the non-return can be realized by utilizing the density difference between the gas in the vertical section 11 and the liquid in the air pressure adjusting box 2, and here, the pressure generated by the gas is smaller and can be ignored. The diameter of the vertical section 11 of the water inlet pipe 1 can be the same at each position and can also be changed, when the diameter of the vertical section 11 of the water inlet pipe 1 is the same at each position, the cross-sectional area of the vertical section 11 is smaller than that of the air pressure adjusting box 2, and when the diameter of the vertical section 11 of the water inlet pipe 1 is changed, the maximum cross-sectional area of the vertical section 11 of the water inlet pipe 1 is smaller than that of the air pressure adjusting box 2. Also, it is preferable that the maximum cross-sectional area of the vertical section 11 of the water inlet pipe 1 is much smaller than the cross-sectional area of the air pressure adjusting chamber 2.
Specifically, in the embodiment of the present application, the water outlet pipe 3 is a straight pipe, one end of which is communicated with the air pressure adjusting box 2, and the communication position is located at the bottom of the side wall of the air pressure adjusting box 2. In other embodiments, the outlet pipe 2 may be a bent pipe.
Specifically, when the water backward flow, because the inside of atmospheric pressure regulating box 2 has the air, consequently, no matter the water backward flow to the inside of atmospheric pressure regulating box 2, still backward flow to the inside of inlet tube 1, have the air between the water of the inside of inlet tube 1 and the water of backward flow all the time, separate the water of the inside of inlet tube 1 and the water of backward flow completely.
Furthermore, the differential fluid diode of this application embodiment still includes trachea 4 and pneumatic control valve 5, and the one end of trachea 4 and the top surface intercommunication of pneumatic control case 2, the other end and the exhaust apparatus intercommunication that fills, pneumatic control valve 5 sets up in trachea 4 for control trachea 4's break-make.
Specifically, aerify exhaust apparatus and aerify or exhaust through trachea 4 to the inside of air pressure adjusting box 2, trachea 4 can play the effect of buffering and steady voltage to avoid atmospheric pressure too big or atmospheric pressure unstable, lead to the water of the inside of air pressure adjusting box 2 to flow disorderly. The air pressure regulating valve 5 can be a mechanical regulating valve or an electromagnetic valve, and the on-off of the air pipe 4 can be conveniently controlled. The length of the air tube 4 may be set according to actual conditions.
Further, the water inlet pipe 1 is a U-shaped pipe, one arm of which is a vertical section 11, the arm is inserted into the bottom surface of the air pressure adjusting box 2, and the other arm is located outside the air pressure adjusting box 2.
Specifically, in this application embodiment, inlet tube 1 is the U-shaped pipe, on the one hand, can play the effect of buffering to the water, and on the other hand, inlet tube 1's bending section has the water, can prevent the circulation to inlet tube 1 of the smell of outlet pipe 3 department, can also avoid outside gas to enter into the inside of atmospheric pressure regulating box 2 from inlet tube 1, influences the liquid level of the inside water of atmospheric pressure regulating box 2.
Furthermore, the diameters of all the positions of the water inlet pipe 1 are the same, and the diameters of all the positions of the water outlet pipe 3 are the same.
Specifically, in this application embodiment, the diameter of inlet tube 1 everywhere is the same, can be so that the water is in steady state when the inside of inlet tube 1 flows all the time, and the diameter of outlet pipe 3 everywhere is the same, can be so that the water is in steady state when the inside of outlet pipe 3 flows all the time, is favorable to guaranteeing the stability that the water flows.
Furthermore, the diameter of the water inlet pipe 1 is equal to that of the water outlet pipe 3.
Specifically, in the embodiment of the present application, the diameters of the water inlet pipe 1 at various positions are the same, the diameters of the water outlet pipe 3 at various positions are the same, and the diameters of the water inlet pipe 1 and the water outlet pipe 3 are the same, so that the stability of the water body flowing can be ensured. And moreover, the accuracy of the charging and discharging amount calculation result can be ensured.
Further, the distance between the top end of the vertical section 11 of the water inlet pipe 1 and the top surface of the air pressure adjusting box 2 is not less than 1.5 times of the diameter of the vertical section 11.
Specifically, the diameter of inlet tube 1 each department is the same, the vertical section 11 of inlet tube 1 runs through to be inserted and locates the bottom surface of atmospheric pressure regulating box 2, the top of this vertical section 11 is located atmospheric pressure regulating box 2's inside, and the distance with the top surface of atmospheric pressure regulating box 2 is not less than 1.5 times of the diameter of vertical section 11, make the inside water of inlet tube 1 can have sufficient space to enter into the inside of atmospheric pressure regulating box 2, also can guarantee that the inside gas of atmospheric pressure regulating box 2 can enter into the inside of inlet tube 1.
Further, as shown in fig. 2, the axis of the vertical section 11 is perpendicular to and intersects with the axis of the outlet pipe 3.
Specifically, the water flows into pressure regulating box 2 from vertical section 11 of inlet tube 1 in, and the water has certain impact force to the water potential has corresponding direction, and the axis of vertical section 11 is perpendicular and crossing with the axis of outlet pipe 3, and at this moment, the water can flow into outlet pipe 3 along the water potential, can increase water flow speed, avoids blockking up.
Further, a sealing ring is arranged at the communication position of the water inlet pipe 1 and the air pressure adjusting box 2.
Specifically, in this application embodiment, set up the sealing washer in inlet tube 1 and pneumatic control box 2's intercommunication department, can prevent that the water of pneumatic control box 2's inside from this outflow pneumatic control box 2, cause the water extravagant, also can prevent that outside water from this entering pneumatic control box 2 in, cause the water pollution. Meanwhile, the sealing ring can prevent gas inside the pressure regulating box 2 from flowing out of the pressure regulating box 2 from the position, so that the gas capacity inside the pressure regulating box 2 is changed, and the liquid level of the water inside the pressure regulating box 2 is influenced.
Further, the air pressure adjusting box 2 is of a cylindrical structure, and the vertical section 11 of the water inlet pipe 1 and the air pressure adjusting box 2 are coaxially arranged.
Specifically, the water inlet pipe 1 and the air pressure adjusting box 2 are coaxially arranged, so that the water body can uniformly flow into the air pressure adjusting box 2, the gas can uniformly enter the vertical section 11 of the water inlet pipe 1, and the stability and the stress balance of the water body and the gas are ensured.
Furthermore, the differential pressure type fluid diode also comprises a control module, the control module is in communication connection with the air charging and discharging device, and the control module is used for controlling the on-off of the air charging and discharging device.
Specifically, in the embodiment of the present application, the control module may control the charging and discharging device to be turned on and off. In some embodiments, the control module may also control the on/off of the air pressure regulating valve 5, thereby controlling the on/off of the air pipe 4. Manual adjustment can be avoided, manual workload is increased, and adjustment precision can be influenced.
Specifically, when the water was flowed in this application embodiment fluid diode positive direction, namely the water was from inlet tube 1 during to outlet pipe 3, the water flow resistance in the fluid diode included inside on-way resistance such as inlet tube 1, trachea 4, outlet pipe 3 to and the cross-section sudden change pressure loss when the water of the vertical section 11 inside of inlet tube 1 got into atmospheric pressure regulating box 2.
When the water body flows in the opposite direction of the fluid diode in the embodiment of the present application, the water body flows back to the inside of the air pressure adjusting box 2, the liquid level of the water body inside the air pressure adjusting box 2 rises, the gas inside the air pressure adjusting box 2 enters the inside of the vertical section 11 of the water inlet pipe 1, and the liquid level of the water body inside the vertical section 11 of the water inlet pipe 1 falls. Since the cross-sectional area of the pressure regulating tank 2 is much larger than the cross-sectional area of the vertical section 11 of the water intake riser 1, the liquid level of the water body inside the vertical section 11 of the water intake riser 1 will drop rapidly. According to the equal volume calculation method, the calculation formula of the liquid level descending height of the water body in the vertical section 11 of the water inlet pipe 1 is as follows:
wherein: h1 is the liquid level descending height of the water body of the inside of the vertical section 11 of the water inlet pipe 1, A1 is the cross-sectional area of the vertical section 11 of the water inlet pipe 1, H2 is the liquid level ascending height of the water body of the inside of the air pressure adjusting box 2, and A2 is the cross-sectional area of the air pressure adjusting box 2.
In the embodiment of the present application, when the water body flows in the opposite direction in the fluid diode in the embodiment of the present application, that is, when the water body flows back from the water outlet pipe 3 to the inside of the air pressure adjusting tank 2, the flow resistance of the water body backflow in the fluid diode includes the on-way resistance inside the air pipe 4, the water outlet pipe 3, and the like, and further includes the check resistance, taking the water inlet pipe 1 as an example of U-shaped pipes with the same diameter everywhere, a calculation formula of the check resistance of the fluid diode in the embodiment of the present application is as follows:
wherein: delta P Non-return For the non return resistance of this application embodiment fluid diode, ρ is the density of water, and H1 is the liquid level descending height of the inside water of the vertical section 11 of inlet tube 1, and A1 is the cross-sectional area of the vertical section 11 of inlet tube 1, and H2 is the liquid level ascending height of the inside water of atmospheric pressure regulating box 2, and A2 is the cross-sectional area of atmospheric pressure regulating box 2.
The non-return resistance of the fluid diode according to the embodiment of the present application can be calculated according to the above formula, the length of the vertical section 11 of the water inlet pipe 1 is designed according to the non-return resistance, and the air charging and discharging amount is further determined according to the length of the vertical section 11 of the water inlet pipe 1, the air charging and discharging amount should be greater than the sum of the volume of the vertical section 11 of the water inlet pipe 1 and the volume of the upper space in the air pressure adjusting box 2, and the volume of the upper space in the air pressure adjusting box 2 refers to the volume of the space between the top end of the vertical section 11 and the top surface of the air pressure adjusting box 2. In addition, the ratio of the cross-sectional areas can be adjusted
To adjust the resistance to checking.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element described by the phrase "comprising a." does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The previous description is only an example of the present application, and is provided to enable any person skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A differential pressure type fluid diode, comprising:
the top of the air pressure adjusting box (2) is communicated with an air charging and discharging device;
the water inlet pipe (1) is provided with a vertical section (11), the vertical section (11) is inserted into the bottom surface of the air pressure adjusting box (2), the top end of the vertical section (11) has a distance with the top surface of the air pressure adjusting box (2), and the maximum cross-sectional area of the vertical section (11) is smaller than the cross-sectional area of the air pressure adjusting box (2)
And the water outlet pipe (3) is arranged at the bottom of the air pressure adjusting box (2), and the water outlet pipe (3) is communicated with the air pressure adjusting box (2).
2. The differential pressure type fluid diode of claim 1, wherein: differential fluid diode still includes trachea (4) and pneumatic control valve (5), the one end of trachea (4) with the top surface intercommunication of atmospheric pressure regulating box (2), the other end with aerify the exhaust apparatus intercommunication, pneumatic control valve (5) set up in trachea (4) for the break-make of control trachea (4).
3. The differential pressure type fluid diode of claim 1, wherein: the water inlet pipe (1) is a U-shaped pipe, one arm of the water inlet pipe is a vertical section (11), the arm is inserted into the bottom surface of the air pressure adjusting box (2), and the other arm is located on the outer side of the air pressure adjusting box (2).
4. The differential fluid diode of claim 1, wherein: the diameters of all the positions of the water inlet pipe (1) are the same, and the diameters of all the positions of the water outlet pipe (3) are the same.
5. The differential fluid diode of claim 4, wherein: the diameter of the water inlet pipe (1) is equal to that of the water outlet pipe (3).
6. The differential fluid diode of claim 4, wherein: the distance between the top end of the vertical section (11) of the water inlet pipe (1) and the top surface of the air pressure adjusting box (2) is not less than 1.5 times of the diameter of the vertical section (11).
7. The differential pressure type fluid diode of claim 1, wherein: the differential pressure type fluid diode further comprises a control module, wherein the control module is in communication connection with the air charging and discharging device and is used for controlling the on-off of the air charging and discharging device.
8. The differential pressure type fluid diode of claim 1, wherein: the axis of the vertical section (11) is perpendicular to and intersected with the axis of the water outlet pipe (3).
9. The differential pressure type fluid diode of claim 1, wherein: and a sealing ring is arranged at the communication position of the water inlet pipe (1) and the air pressure adjusting box (2).
10. The differential pressure type fluid diode of claim 1, wherein: the air pressure adjusting box (2) is of a cylindrical structure, and the vertical section (11) of the water inlet pipe (1) and the air pressure adjusting box (2) are coaxially arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221970678.9U CN217926580U (en) | 2022-07-28 | 2022-07-28 | Differential pressure type fluid diode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221970678.9U CN217926580U (en) | 2022-07-28 | 2022-07-28 | Differential pressure type fluid diode |
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| Publication Number | Publication Date |
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| CN217926580U true CN217926580U (en) | 2022-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221970678.9U Active CN217926580U (en) | 2022-07-28 | 2022-07-28 | Differential pressure type fluid diode |
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- 2022-07-28 CN CN202221970678.9U patent/CN217926580U/en active Active
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