CN215338515U - Open commutator adopting circular arc runner - Google Patents
Open commutator adopting circular arc runner Download PDFInfo
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- CN215338515U CN215338515U CN202121919292.0U CN202121919292U CN215338515U CN 215338515 U CN215338515 U CN 215338515U CN 202121919292 U CN202121919292 U CN 202121919292U CN 215338515 U CN215338515 U CN 215338515U
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Abstract
The utility model relates to the technical field of fluid metering, in particular to an open commutator adopting circular arc-shaped flow channels, which comprises a commutator main body and a flow guide structure for guiding fluid into the commutator main body, wherein the flow guide structure comprises arc-shaped flow guide channels, the middle parts of the flow guide channels are arched upwards, the cross sections of the flow guide channels are flat and rectangular, the liquid outlet ends of the flow guide channels are used for supplying liquid into the commutator main body, and the liquid inlet ends of the flow guide channels are connected to a liquid flow standard device. The utility model achieves the aim of uniform hydraulic distribution at the outlet of the nozzle under the condition of sufficient water flow in the diversion flow channel by virtue of the structure that the cross section of the diversion flow channel is flat and rectangular, achieves the aim of uniform hydraulic distribution at the outlet of the nozzle when the water flow in the diversion flow channel is insufficient by virtue of the upward arched state of the middle part of the diversion flow channel, and achieves the aim of switching the water flow by virtue of the commutator body.
Description
Technical Field
The utility model relates to the technical field of fluid metering, in particular to an open type commutator adopting an arc-shaped flow passage.
Background
The liquid flow standard device is a measuring standard device for measuring, verifying and calibrating a liquid flow measuring instrument, mainly comprises five parts, namely a water source system, a pipeline system, a flow regulating system, a measuring system and a measuring and controlling system, generally has a higher accuracy level, and can transmit a reproduced value to the liquid flow measuring instrument, so that the value assignment of the value of the liquid flow measuring instrument is realized.
In order to ensure that the liquid flow standard device can reproduce the measurement value with higher accuracy level, the metering system of the liquid flow standard device usually adopts a standard measuring device or weighing system, and collects the liquid flowing through the liquid flow metering device to be verified and calibrated into a container, when the container is the standard measuring device, the standard volume of the liquid is measured, when the container is the weighing container, the standard mass of the liquid is measured, and the mass and the volume can be mutually converted through the known density of the liquid; the standard measuring device or the weighing system is calibrated by a measuring standard device with higher accuracy level, the indicated quantity value represents the standard quantity value, and the accuracy level of the liquid flow measuring instrument can be determined by comparing the indicated quantity value of the liquid flow measuring instrument with the quantity value indicated by the liquid flow measuring instrument; in the process of verifying and calibrating the liquid flow meter by adopting the liquid flow standard device, because the liquid flow meter needs to work in a state of stable flow of fluid, a method for collecting the liquid cannot adopt a valve switching mode, and a flow direction switching mode needs to be adopted to control the fluid to flow into or flow out of a collecting container under the stable flow of the fluid; the device for switching the flow direction of the fluid is a commutator and is an important component of a metering system; the commutator has two structural forms, one is a closed commutator, the commutation process is completed in a closed pipeline, hydraulic disturbance is easy to generate, and the stability of fluid flow is obviously influenced; the other is an open type commutator, the reversing process is completed in a stage of contacting with the atmosphere after the fluid flows out of the packaging pipeline, basically no hydraulic disturbance is generated, and the fluid can continuously keep stable flow; the better the stability of fluid flow, the better the reliability of the metering, verification and calibration result of the liquid flow meter is ensured, so that the open type commutator has the characteristics much better than that of a closed type commutator and becomes the mainstream of application; the open commutator solves the problem of hydraulic disturbance in the commutation process, but also needs to solve the problem of hydraulic distribution uniformity at the outlet of the commutator; when the water flow is switched by the commutator, no matter the water flow is switched into the collecting container or the water flow is switched out of the collecting container, a transient process that the water flows to two side flows simultaneously inevitably exists in the mechanical movement process of the reversing mechanism; this transient process can be measured by means of a measurement and control system of a liquid flow standard device, and it is known from theoretical analysis that the uniformity of hydraulic distribution has a significant influence on the accuracy level of the liquid flow standard device. Therefore, how to control the uniformity of the hydraulic distribution at the outlet of the commutator is a key factor for improving the accuracy level of the liquid flow standard device.
SUMMERY OF THE UTILITY MODEL
In view of the above, the utility model aims to solve the problems that the hydraulic force is easy to disturb in the reversing process of the reverser and the outlet hydraulic force distribution uniformity is poor.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
the utility model provides an adopt open commutator of convex runner, includes the commutator main part to and be used for to leading-in fluidic water conservancy diversion structure in the commutator main part, the water conservancy diversion structure is including being curved water conservancy diversion runner, wherein water conservancy diversion runner middle part is upwards arched, just water conservancy diversion runner cross-section is flat rectangle form, water conservancy diversion runner goes out the liquid end and is used for supplying liquid in to the commutator main part, and another inlet end is used for being connected to on the liquid flow standard device.
Compared with the prior art, the utility model has the advantages that: the cross section of having passed through the water conservancy diversion runner is the structure of flat rectangle form, has reached the even purpose of the exit hydraulic power distribution of nozzle when the abundant condition of rivers in the water conservancy diversion runner under, has passed through the state of water conservancy diversion runner middle part arch-shaped upwards simultaneously, reaches when rivers are not enough in the water conservancy diversion runner, makes the even purpose of exit hydraulic power distribution of nozzle, has reached simultaneously through the commutator main part and has made the device can carry out the purpose that rivers switched.
Preferably, the commutator body comprises an outer shell, an inner shell horizontally connected in the outer shell in a sliding manner, and a power mechanism for driving the inner shell to horizontally move relative to the outer shell; two first runners have been seted up to the bottom of shell body, two be equipped with the baffle between the first runner, the upper end of baffle has set firmly the limiting plate, two second runners have been seted up in the interior casing, two second runner bottom interval sets up and forms the contained angle region, the limiting plate is located in the contained angle region, two the second runner is with two first runner one-to-one.
Preferably, the power mechanism comprises a cylinder horizontally arranged on the outer shell, the output end of the cylinder extends into the outer shell and is fixed with the inner shell, a horizontally arranged guide shaft is fixedly arranged at the upper end of the commutator body, and the inner shell is slidably connected to the guide shaft.
Preferably, a fixing plate is fixedly arranged at the upper end of the commutator body, a conduction groove is formed in the fixing plate, and the liquid outlet end of the flow guide flow passage penetrates through the conduction groove and extends into the second flow passage.
Preferably, a blocking plate is fixedly arranged at the upper end of the included angle area, and the upper end of the blocking plate is positioned below the liquid outlet end of the flow guide channel.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a right side view of fig. 1.
Fig. 3 is a schematic structural diagram of a-a in fig. 2.
Fig. 4 is a top view of fig. 1.
Fig. 5 is an isometric view of the present invention.
Reference numerals: 1. a circular arc pipeline; 13. a guide shaft;
2. a flow guide shell; 22. a limiting plate; 24. a first flow passage;
3. a fixing plate;
4. a cylinder;
5. an inner housing; 51. an included angle region; 52. a blocking plate; 53. a second flow passage.
Detailed Description
The following detailed description of the embodiments of the present invention is provided in order to make the technical solution of the present invention easier to understand and understand.
Example (b):
the embodiment provides an open commutator adopting circular arc-shaped flow channels, which is mainly used for solving the problems that the hydraulic power is easy to disturb and the outlet hydraulic power distribution uniformity is poor in the commutator reversing process.
Referring to fig. 1 and 2, in the liquid flow detection, the liquid needs to work in a state where the fluid stably flows, and further, the fluid at the liquid outlet end needs to be uniformly distributed, in order to solve such problems, in this embodiment, the liquid flow detection device includes a flow guide structure, the flow guide structure includes an arc-shaped flow guide channel 1, and the liquid outlet end of the flow guide channel 1 is used for supplying liquid into the commutator main body;
when the fluid passes through the flow guide channel 1, the purpose that the fluid enters the commutator body through the flow guide channel 1 is further achieved;
in addition, as the flow guide channel 1 is arc-shaped, when the water flow in the flow guide channel 1 is sufficient, the fluid can be ensured to continuously flow to the highest point of the flow guide channel 1 when flowing in the flow guide channel 1, the potential energy of the fluid is maximum at the moment, and the fluid can be ensured to flow to fill the whole nozzle when beginning to flow downwards, so that the aim of uniformly distributing the fluid is fulfilled;
it should be noted that, when the working flow of the fluid is insufficient, the fluid enters the diversion fluid, it cannot be guaranteed that the outlet of the nozzle can be filled with the liquid, and the hydraulic distribution at the outlet of the nozzle cannot be uniform, so as to solve the problems;
the specific structure of the flow guide channel 1 is as follows: the middle part of the flow guide channel 1 is arched upwards, and the section of the flow guide channel 1 is flat and rectangular; for the traditional nozzle without the diversion structure, when the fluid in the flow passage is insufficient, air can enter together, further, the flow state in the nozzle is in an unstable state due to the air resistance effect of the air, so that the hydraulic distribution at the outlet cannot be controlled, however, the middle part of the diversion flow channel 1 in the embodiment is arched upwards, when the liquid flows in from the lower part of the diversion flow channel 1 and reaches the highest point when the flow is arched, the pressure energy and the kinetic energy of the liquid flowing to the arc top under the action of atmospheric pressure are all converted into high potential energy, the liquid forms a liquid level plane at the arc top, then the high potential energy of the liquid at the turning point of the arc top is converted into kinetic energy, the liquid flows downwards to the outlet of the nozzle along the flow channel, the liquid has the same initial energy state at the liquid level of the arc top, the uniform flowing state can be ensured to be formed under the action of gravity, so that the aim of ensuring the hydraulic distribution uniformity of liquid at the outlet of the nozzle is fulfilled;
in addition, in order to ensure that the fluid is more uniformly distributed, the length of the flow guide channel 1 is at least ten times of the width, so that the gravity effect of the fluid can be increased, and the purpose that the fluid is more uniformly distributed at an outlet is further ensured;
the specific position of the flat rectangular section of the flow guide channel 1 is any position of the flow guide channel which is arched upwards.
Referring to fig. 1 to 2, since the commutator needs to switch the flow of the fluid, and further needs to achieve the purpose of delivering water in different flow channels, and meanwhile, in order to achieve different flows of the fluid in the two first flow channels 24, in order to solve such problems, in the present embodiment, an open commutator using circular arc flow channels includes a commutator main body, which includes an outer housing 2, an inner housing 5 horizontally slidably connected in the outer housing 2, and a power mechanism for driving the inner housing 5 to horizontally move relative to the outer housing 2;
the purpose of enabling the inner shell 5 to horizontally move in the outer shell 2 can be achieved through the power mechanism, so that the water in the diversion flow channel 1 can be switched between two flow channels in the inner shell 5, and the purpose of conveying water in different flow channels is achieved;
the specific structure of the power mechanism is as follows: the power mechanism comprises an air cylinder 4 horizontally arranged on the outer shell 2, and the output end of the air cylinder 4 extends into the outer shell 2 and is fixed with the inner shell 5;
when the direction needs to be changed, the power mechanism starts to operate at the moment, so that the cylinder 44 starts to operate and stretch, the purpose of driving the inner shell 5 to move is further achieved, the lower part of the flow guide channel 1 starts to change the position in the inner shell 5, and the purpose of effective switching is further achieved;
meanwhile, in order to ensure that the inner shell 5 horizontally slides in the outer shell 2, a horizontally arranged guide shaft 13 is fixedly arranged at the upper end of the commutator body, and the inner shell 5 is slidably connected to the guide shaft 13, so that the aim of ensuring that the inner shell 5 slides along the guide shaft 13 is fulfilled;
further, in order to ensure more stable sliding of the inner housing 5, a plurality of guide shafts 13 may be provided.
The power mechanism is not limited to the cylinder 4, and may be other power outputs, including a motor, a hydraulic pump, etc.
It should be noted that, the specific structures of the outer shell 2 and the inner shell 5 in the above are: the bottom of the outer shell 2 is provided with two first flow channels 24, a partition plate is arranged between the two first flow channels 24, the upper end of the partition plate is fixedly provided with a limiting plate 22, the inner shell 5 is internally provided with two second flow channels 53, the bottoms of the two second flow channels 53 are arranged at intervals to form an included angle area 51, the limiting plate 22 is positioned in the included angle area 51, and the two second flow channels 53 correspond to the two first flow channels 24 one by one;
when the inner shell 5 horizontally slides in the outer shell 2, the purpose of driving the second flow channel 53 to start switching is achieved, and the purpose that the fluid sprayed out of the diversion flow channel 1 can enter different flow channels according to requirements and then enter the two first flow channels 24 is achieved;
in addition, the partition plate is arranged between the two first flow passages 24 to separate the first flow passages 24, the limiting plate 22 is fixedly arranged at the upper end of the partition plate, meanwhile, an included angle area 51 is formed at the bottom of the two second flow passages 53, and the limiting plate 22 is positioned in the included angle area 51, so that the inner shell 5 is ensured to slide within a certain range, and the range of preventing the position of the inner shell 5 from being separated from the diversion flow passage 1 is further achieved;
in addition, a blocking plate 52 is fixedly arranged at the upper end of the included angle area 51, and the upper end of the blocking plate 52 is positioned below the liquid outlet end of the diversion flow channel 1, so that the purpose that the water on the side edge continues to sputter in the flow channel on the other side in the reversing process is avoided, and the completeness of the reversing is further ensured.
In order to solve the problem that the liquid outlet end of the flow guide channel 1 can be always kept in a stable state, the upper end of the commutator body is fixedly provided with the fixing plate 3, the fixing plate 3 is internally provided with a conduction groove, the liquid outlet end of the flow guide channel 1 penetrates through the conduction groove and extends into the second flow channel 53, so that the fluid in the flow guide channel 1 can normally enter the second flow channel 53, and the flow guide channel 1 can be more stable through the fixing plate 3.
It should be noted that the other end of the diversion flow channel 1 is connected to the liquid flow standard device, thereby ensuring the water supply problem in the diversion flow channel 1;
meanwhile, for the convenience of installation, the diversion flow channel 1 is located a section outside the outer shell 2 is fixedly provided with a circular pipeline, one end of the circular pipeline is connected with a liquid flow standard device, one end of the diversion flow channel 1 is arranged on a joint of the liquid flow standard device, and then the normal outflow of fluid is ensured, and the purpose of preventing water and gas leakage in the circular pipeline is achieved.
The above are only typical examples of the present invention, and besides, the present invention may have other embodiments, and all technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of the present invention.
Claims (5)
1. The utility model provides an adopt open commutator of convex runner, includes the commutator main part to and be used for leading-in fluidic water conservancy diversion structure in to the commutator main part, its characterized in that, the water conservancy diversion structure is including being curved water conservancy diversion runner (1), wherein water conservancy diversion runner (1) middle part upwards arches, just water conservancy diversion runner (1) cross-section is flat rectangle form, water conservancy diversion runner (1) goes out the liquid end and is used for supplying liquid in to the commutator main part, and another inlet end is used for being connected to on the liquid flow standard device.
2. The open type commutator of claim 1, wherein the commutator body comprises an outer casing (2), an inner casing (5) horizontally and slidably connected in the outer casing (2), and a power mechanism for driving the inner casing (5) to horizontally move relative to the outer casing (2); two first runners (24), two have been seted up to the bottom of shell body (2) be equipped with the baffle between first runner (24), limiting plate (22) have been set firmly to the upper end of baffle, two second runners (53), two have been seted up in interior casing (5) second runner (53) bottom interval sets up and forms contained angle region (51), limiting plate (22) are located in contained angle region (51), two second runner (53) and two first runner (24) one-to-one.
3. The open commutator of claim 2, wherein the actuating unit comprises a cylinder (4) horizontally disposed on the outer housing (2), the output end of the cylinder (4) extends into the outer housing (2) and is fixed with the inner housing (5), a horizontally disposed guide shaft (13) is fixedly disposed at the upper end of the commutator body, and the inner housing (5) is slidably connected to the guide shaft (13).
4. The open type commutator of claim 2, wherein the commutator body is fixedly provided with a fixing plate (3) at the upper end, the fixing plate (3) is provided with a conduction groove, and the liquid outlet end of the flow guide runner (1) passes through the conduction groove and extends into the second runner (53).
5. The open commutator of claim 2, wherein the upper end of the angle area (51) is fixedly provided with a blocking plate (52), and the upper end of the blocking plate (52) is located below the liquid outlet end of the diversion flow passage (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121919292.0U CN215338515U (en) | 2021-08-16 | 2021-08-16 | Open commutator adopting circular arc runner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121919292.0U CN215338515U (en) | 2021-08-16 | 2021-08-16 | Open commutator adopting circular arc runner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215338515U true CN215338515U (en) | 2021-12-28 |
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ID=79577520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121919292.0U Active CN215338515U (en) | 2021-08-16 | 2021-08-16 | Open commutator adopting circular arc runner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215338515U (en) |
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2021
- 2021-08-16 CN CN202121919292.0U patent/CN215338515U/en active Active
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