CN211006993U - Rainwater cut-off device - Google Patents
Rainwater cut-off device Download PDFInfo
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- CN211006993U CN211006993U CN201921703245.5U CN201921703245U CN211006993U CN 211006993 U CN211006993 U CN 211006993U CN 201921703245 U CN201921703245 U CN 201921703245U CN 211006993 U CN211006993 U CN 211006993U
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Abstract
The embodiment of the utility model discloses rainwater cut-off equipment for install on the revetment in river course, rainwater cut-off equipment includes: the device comprises a shell, a controller, a valve mechanism, a water pump, a first liquid level detection device and a second liquid level detection device; the shell is provided with a water inlet and a water outlet, the water inlet is used for being communicated with an external rainwater pipeline, and the water outlet is used for being communicated with an external sewage pipeline network; the valve mechanism is arranged on the shell and is electrically connected with the controller, the water pump is arranged in the shell and is electrically connected with the controller, and the output end of the water pump is communicated with the water outlet; the first liquid level detection device is arranged on the outer side of the shell and is electrically connected with the controller; the second liquid level detection device is arranged on the inner side of the shell and is electrically connected with the controller. The utility model provides a rainwater cut-off equipment has and maintains the convenience, and area occupied is little, advantages such as longe-lived.
Description
Technical Field
The embodiment of the utility model provides a rainwater field of handling especially relates to a rainwater cut-off equipment.
Background
In plain river network area, river course water level is higher relatively, and the rainwater delivery port generally is in submerging the state of effluenting, and the dirty well is cut to general vatch basin adoption overflow weir and electric valve formula, and when the water level exceeded the setting, the floater level gauge sent the instruction and closed the motorised valve to prevent river water and flow backward, perhaps install devices such as duckbill valve, flap valve additional at the export.
The inventor of the application finds that the intercepting well in the prior art occupies a large area, is difficult to install and inconvenient to manage, and hardly has transformation conditions in luxurious old urban areas, and the areas are often polluted serious disaster areas.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a rainwater cut-off equipment has and maintains the convenience, and area occupied is little, advantages such as longe-lived.
The embodiment of the utility model provides a rainwater cut-off equipment for install on the revetment in river course, rainwater cut-off equipment include: the device comprises a shell, a controller, a valve mechanism, a water pump, a first liquid level detection device and a second liquid level detection device;
the shell is provided with a water inlet and a water outlet, the water inlet is used for being communicated with an external rainwater pipeline, and the water outlet is used for being communicated with an external sewage pipeline network;
the valve mechanism includes: a gate hoist and a transverse valve; the gate hoist is arranged on the shell and electrically connected with the controller, the shell is provided with a through hole, the transverse valve is arranged on the through hole, and the transverse valve is connected with the gate hoist;
the water pump is arranged in the shell and electrically connected with the controller, and the output end of the water pump is communicated with the water outlet;
the first liquid level detection device is arranged on the inner side of the shell and is electrically connected with the controller; the first liquid level detection device is used for detecting the water level inside the shell.
The second liquid level detection device is arranged outside the shell and is electrically connected with the controller; the second liquid level detection device is used for detecting the water level of the river surface of the river channel;
in one possible approach, the housing includes: the anti-theft device comprises a main body frame, a double-layer sealing plate and an anti-theft top plate;
the double-layer sealing plate is arranged on the main body frame;
the anti-theft top plate is covered on the double-layer sealing plate.
In one possible embodiment, the rainwater interception device further comprises: screening a screen;
the screen is arranged in the shell and divides an inner cavity of the shell into a first rainwater chamber and a second rainwater chamber;
the water pump is positioned in the second rainwater chamber;
rainwater and rainwater cut-off equipment, still include: a cushion layer;
the bed course sets up first rainwater room, just the height of bed course is less than the height of water inlet.
The screen cloth is used for filtering the rainwater, and the bed course is used for preventing the inside sewage that forms of casing.
In one possible embodiment, the rainwater interception device further comprises: a basket grid;
the basket grid is arranged in the first rainwater chamber and located between the cushion layer and the screen.
The basket grid is used for filtering rainwater.
In one possible embodiment, the rainwater interception device further comprises: a flow meter;
the flowmeter is arranged on the inner side of the shell and is electrically connected with the controller.
In one possible solution, the level of the water outlet is above the level of the water inlet.
In one possible scheme, the anti-theft top plate is provided with a viewing port;
the rainwater cut-off device further comprises: an observation window; the observation window is arranged on the observation port, and the observation window is used for observing the condition in the shell by a user.
In one possible embodiment, the rainwater interception device further comprises: a one-way valve;
the check valve includes: the valve seat, the pressure spring and the sealing block; the valve seat is provided with a rainwater channel, a sealing section and a water outlet section, the rainwater channel, the sealing section and the water outlet section are communicated, the valve seat is arranged on the water outlet, the rainwater channel is communicated with an external sewage pipe network pipeline, the sealing block abuts against the sealing section, one end of the pressure spring abuts against the sealing block, and the other end of the pressure spring abuts against the water outlet section.
The one-way valve is used for preventing sewage in the external sewage pipe network from flowing backwards.
According to the above technical scheme, the utility model discloses a mutually support between casing, controller, valve mechanism, water pump, first liquid level detection device and the second liquid level detection device, have and maintain the convenience, advantages such as area occupied is little, longe-lived. Specifically, rainwater enters the inside of the shell from a rainwater pipeline, and is conveyed to an external sewage pipe network through a water pump. The water level detection device is arranged in the shell, when the first liquid level detection device detects that the water level in the shell is higher than a preset water level, the first liquid level detection device sends a signal to the controller, the controller controls the gate hoist, the gate hoist drives the transverse valve to be opened, and a part of rainwater passes through a transverse valve runner river channel. The second liquid level detection device is arranged on the shell, and when the liquid level of the river surface of a river channel of the second liquid level detection device is lower than a preset water level, the second liquid level detection device is used for checking the transverse valve and preventing the valve of the transverse valve from being opened under emergency conditions.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a top view of a rain cut-off device according to a first embodiment of the present invention;
fig. 2 is a side view of a rain cut-off device according to a first embodiment of the present invention;
fig. 3 is a schematic view of a drain valve according to a first embodiment of the present invention;
fig. 4 is a schematic view of a check valve according to a first embodiment of the present invention.
Reference numbers in the figures:
1. a housing; 101. a main body frame; 102. a double-layer sealing plate; 103. an anti-theft top plate; 2. a valve mechanism; 201. a gate hoist; 202. a transverse valve; 3. a water pump; 4. a first liquid level detection device; 5. a second liquid level detection device; 6. screening a screen; 7. a cushion layer; 8. a basket grid; 9. an observation window; 10. a flow meter; (remove) 11, drain valve; 1101. a valve body; 1102. a valve core; 1103. rotating the handle; 12. a one-way valve; 1201. a valve seat; 1202. a pressure spring; 1203. and (6) sealing the block.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.
In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; the connection can be mechanical connection, electrical connection or communication connection; either directly or indirectly through intervening media, either internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The technical solution of the present invention will be described in detail with specific examples. The following several specific embodiments may be combined with each other, and some of the same or similar concepts or processes may not be described in detail in some embodiments.
Fig. 1 is a schematic structural view of a rainwater intercepting apparatus according to a first embodiment of the present invention; fig. 2 is a side view of a rain cut-off device according to a first embodiment of the present invention. As shown in fig. 1 and 2, the rainwater intercepting apparatus of the present embodiment includes: a shell 1, a controller (not shown), a valve mechanism 2, a water pump 3, a first liquid level detection device 4 and a second liquid level detection device 5; the shell 1 is provided with a water inlet and a water outlet, the diameter of the water inlet is larger than that of the water outlet, a flange plate is arranged at the water inlet, a plurality of through holes are formed in the flange plate, an external rainwater pipeline is fixedly connected with the flange plate through bolts, and the water outlet is communicated with an external sewage pipe network; the valve mechanism 2 includes: a gate hoist 201 and a lateral valve 202; the gate hoist 201 is fixedly arranged on the shell 1 through bolts and electrically connected with the controller, the shell 1 is provided with a through hole, the transverse valve 202 is arranged on the through hole, and the transverse valve 202 is connected with the gate hoist 201; the water pump 3 is arranged in the shell 1, the water pump 3 is electrically connected with the controller, and the output end of the water pump 3 is communicated with the water outlet; the first liquid level detection device 4 is arranged on the inner side of the shell 1 and is electrically connected with the controller; the first liquid level detection device 4 is used for detecting the water level inside the shell 1; the second liquid level detection device 5 is arranged outside the shell 1 and is electrically connected with the controller; the second liquid level detection device 5 is used for detecting the water level of the river surface.
It should be noted that the gate hoist 201 is a hoist, and is connected to the gate by using a steel cable or a steel cable pulley block as a hoist, and a gear transmission system is used to wind and unwind the steel cable by the hoist drum to drive the hoist to ascend and descend, which is also called a steel cable fixed hoist. The gate valve is simple in structure, easy to manufacture, convenient to maintain and overhaul and widely applied to opening and closing of various gates. The hoisting hoist is divided into a single hoisting point and a double hoisting point. The double-lifting-point hoisting hoist connects two single-lifting-point hoists together through a connecting shaft to synchronously operate, and can be made into one-side drive or two-side drive.
It can be easily found from the above that, particularly, rainwater enters the inside of the housing 1 from the rainwater pipeline and is delivered to the external sewage pipe network through the water pump 3. Be equipped with first liquid level detection device 4 in casing 1 inside, when first liquid level detection device 4 detected the water level in casing 1 and is higher than predetermineeing the water level, first liquid level detection device 4 sent the signal to the controller this moment, and the controller is controlled gate hoist 201, and gate hoist 201 drives transverse valve 202 and opens, and partly rainwater is through transverse valve 202 runner river course. The second liquid level detection device 5 is arranged on the shell of the shell 1, and when the liquid level of the river surface of the second liquid level detection device 5 is lower than the preset water level, the second liquid level detection device is used for checking the transverse valve 202 and preventing the transverse valve 202 from being opened in emergency.
Alternatively, in the present embodiment, the housing 1 includes: a main body frame 101, a double-layer sealing plate 102 and an anti-theft top plate 103; main body frame 101, double-deck sealing plate 102 and theftproof roof 103 are made by stainless steel material, and main body frame 101 is the cuboid that lacks roof and a curb plate, wherein leans on water inlet and delivery port one side to reserve the hole with pipe diameters such as rainwater pipeline, and this side steel sheet passes through the bolt fastening with the delivery port, adopts prevention of seepage leak protection such as rubber circle. And a transverse gate is arranged in the double-layer sealing lateral sealing plate, and after the main body frame 101 is installed, the transverse gate is fixed on the main body frame 101 in a bolt and rubber ring mode. The anti-theft top plate 103 is connected with the main body frame 101 and hidden in the whole device, so that the anti-theft top plate is prevented from being detached from the outside. Optionally, the main body frame 101 is a cuboid lacking a top plate and a side plate, wherein holes with pipe diameters equal to those of a rainwater pipeline are reserved on one side close to the water inlet and the water outlet, the side steel plate and the water outlet are fixed through bolts, and seepage prevention and leakage prevention are achieved through rubber rings and the like.
Optionally, in this embodiment, the screen 6 in the rain water cut-off device comprises a screen and a support frame. The filter screen is established on the support frame, is equipped with a plurality of bosss on the support frame, is equipped with the through-hole on each boss, is equipped with the screw hole on the casing 1, and rainwater cut-off equipment still includes: the fixing bolts penetrate through the through holes in the supporting frame and are in threaded connection with the shell 1, so that the screen 6 is fixedly connected with the shell 1, and the screen 6 divides the inner cavity of the shell 1 into a first rainwater chamber and a second rainwater chamber; the water pump 3 is located in the second rain water chamber. Rainwater and rainwater cut-off equipment still includes: a cushion layer 7; the bed course 7 is made by plain concrete, and bed course 7 sets up first rainwater room, and the height of bed course 7 is less than the height of device water inlet. The screen 6 is used to filter rainwater, and the cushion 7 is used to prevent the formation of sewage inside the housing 1.
Rainwater is at the in-process that flows to the device, the rainwater is mingled with some fallen leaves, foreign matter such as filiform object, these foreign matters can twine on the impeller of water pump 3 when getting into in water pump 3, long this is not only reduced water delivery efficiency of water pump 3 in the past, cause water pump 3 to damage if serious, consequently for preventing the foreign matter to enter into water pump 3 inside, add before the input section of water pump 3 and establish screen cloth 6, sewage is getting into water pump 3 after 6 filters of screen cloth, thereby avoid the foreign matter to get into water pump 3.
Optionally, in this embodiment, the rainwater cut-off device further includes: further comprising: a basket grid 8; the basket grid 8 is located between bed course 7 and screen cloth 6, and basket grid 8 includes: support body and filtration body, filtration body and support body threaded connection are equipped with a plurality of bosss on the support body, and the boss is equipped with the through-hole, and the lateral wall and the diapire of first rainwater room are equipped with a plurality of screw holes, and the device still includes a plurality of bolts, and the bolt passes the through-hole of support body, and with 1 threaded connection of casing to fix basket grid 8 at first rainwater room.
Optionally, in this embodiment, the rainwater cut-off device further includes: a flow meter 10; flowmeter 10 sets up at the casing inboard, and is located the water inlet of casing to with controller electric connection, flowmeter 10 is used for measuring the rainwater that gets into in the casing, and gives the controller with the result transmission of measurement, and the user confirms the volume of water pump output rainwater through the controller, when the rainfall of water pump output surpassed predetermined rainfall, thereby overhauls the water pump.
Optionally, in this embodiment, the level of the water outlet is above the level of the water inlet, facilitating the entry of rain water into the device.
Optionally, in the present embodiment, the antitheft top plate 103 is provided with a viewing port; the viewing aperture is circular, and rainwater cut-off equipment still includes: an observation window 9; the observation window 9 is including installation main part and toughened glass, toughened glass is equipped with the through-hole, the installation main part is equipped with the screw hole, the device still includes a plurality of bolts, the bolt pass toughened glass's through-hole and with installation main part threaded connection, make toughened glass fix in the installation main part, scribble glue that blocks water in the place of toughened glass and installation main part contact in addition, prevent that rivers in the river course from to casing 1 inside, the one end and the casing 1 of installation main part are articulated, the other end is equipped with the cushion, be equipped with the screw through-hole on the cushion, the device still includes: sealing bolt, sealing bolt set up in the screw thread through-hole, and with 1 threaded connection of casing, the place of viewing aperture and installation main part contact is equipped with seal ring, avoids outside rivers to casing 1 inside.
The device is in the operation, and the inside of casing 1 has the foreign matter of silt, branch, plastic bottle etc., influences the water delivery capacity of water pump 3, therefore the user inspects the device at intervals, thereby for example, the state that is used for observing the inside of casing 1 through the clear glass of observation window 9 need not to open theftproof roof 103, when the inside foreign matter such as silt, branch, maintains the device.
Optionally, in this embodiment, the rainwater cut-off device further includes: a drain valve 11; the drain valve 11 includes: a valve body 1101, a valve core 1102, and a rotary handle 1103; the casing 1 is provided with a water outlet, the valve body 1101 is provided with an external thread, the water outlet is provided with an internal thread, the valve body 1101 is in threaded connection with the casing 1, a rubber pad is arranged at a position where the surface of the valve body 1101 abuts against the surface of the casing 1 and is used for sealing the drain valve 11, a channel and a sealed cavity are arranged in the valve body 1101 and are communicated with each other, the valve core 1102 is spherical, the valve core 1102 is positioned in the sealed cavity and is in sealed fit with the valve body 1101, the rotating handle 1103 is fixedly connected with the valve core 1102, the valve core 1102 is provided with a water outlet channel, when the rotating handle 1103 drives the valve core 1102 to rotate to a preset angle, the water outlet channel is communicated with the.
When the water level of river surface was lower, the user overhauld the device, because the position that water pump 3 set up is higher, 1 inside some rainwater that has of casing, overhauls the device to the user and causes certain influence, consequently discharges the rainwater of inside. For example, when a user operates the rotating handle 1103, the rotating handle 1103 drives the valve core 1102 to rotate, when the valve core 1102 rotates to a preset angle, the rainwater passage of the valve core 1102 is communicated with the passage on the valve body 1101, and the rainwater passes through the valve body 1101, the valve core 1102 and finally flows out of the flow passage.
Optionally, in this embodiment, the rainwater cut-off device further includes: a check valve 12; the check valve 12 includes: a valve seat 1201, a pressure spring 1202 and a sealing block 1203; the valve seat 1201 is made of copper, an internal thread is arranged on the valve seat 1201, a boss is arranged at a water outlet, a through hole and an external thread are arranged on the boss, the valve seat 1201 is in threaded connection with the shell 1, the through hole in the boss is used for being communicated with an external sewage pipe network, the valve seat 1201 is provided with a rainwater channel, a sealing section and a water outlet section, the cross section of the rainwater channel is circular, the rainwater channel, the sealing section and the water outlet section are respectively communicated, the rainwater channel is communicated with an output section of the water pump 3, the water outlet section is communicated with an external sewage pipe network pipeline, the sealing block 1203 abuts against the sealing section, one end of the pressure spring 1202 abuts against.
When the length of outside sewer pipe network is great, there are a lot of rainwater between water pump 3 and the sewer pipe network, when water pump 3 stopped the operation, the refluence phenomenon appears in some rainwater. For example, the water pump 3 pressurizes rainwater in the housing 1, the pressurized rainwater flows from the output section of the water pump 3 to the rainwater passage of the valve seat 1201, at this time, the force of the rainwater in the rainwater passage, which applies the sealing block 1203, is greater than the force of the pressure spring 1202, which applies the sealing block 1203, the pressure spring 1202 is compressed by force, the sealing block 1203 is separated from the valve seat 1201, the rainwater enters the water outlet section from the sealing section and finally flows to an external sewage pipe network, when the water pump 3 stops working, the force of the water pressure in the rainwater passage, which applies the sealing block 1203, is less than the pressure applied by the pressure spring 1202, at this time, the sealing block 1203 abuts against the sealing section, and the sealing block 1203 isolates the rainwater passage from the water outlet section to.
In the present application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first feature or the second feature or indirectly contacting the first feature or the second feature through an intermediate.
Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lower level than the second feature.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (7)
1. A rainwater cut-off device for being installed on a barge bank of a river channel, the rainwater cut-off device comprising: the device comprises a shell, a controller, a valve mechanism, a water pump, a first liquid level detection device and a second liquid level detection device;
the shell is provided with a water inlet and a water outlet, the water inlet is used for being communicated with an external rainwater pipeline, and the water outlet is used for being communicated with an external sewage pipeline network;
the valve mechanism includes: a gate hoist and a transverse valve; the gate hoist is arranged on the shell and electrically connected with the controller, the shell is provided with a through hole, the transverse valve is arranged on the through hole, and the transverse valve is connected with the gate hoist;
the water pump is arranged in the shell and electrically connected with the controller, and the output end of the water pump is communicated with the water outlet;
the first liquid level detection device is arranged on the inner side of the shell and is electrically connected with the controller; the first liquid level detection device is used for detecting the water level in the shell;
the second liquid level detection device is arranged outside the shell and is electrically connected with the controller; the second liquid level detection device is used for detecting the water level of the river surface.
2. A rainwater shut-off device according to claim 1, characterised in that said housing comprises: the anti-theft device comprises a main body frame, a double-layer sealing plate and an anti-theft top plate;
the double-layer sealing plate is arranged on the main body frame;
the anti-theft top plate is covered on the double-layer sealing plate.
3. A rainwater shut off device according to claim 1 and also comprising: screening a screen;
the screen is arranged in the shell and divides an inner cavity of the shell into a first rainwater chamber and a second rainwater chamber;
the water pump is positioned in the second rainwater chamber;
rainwater and rainwater cut-off equipment, still include: a cushion layer;
the cushion layer is located in the first rainwater chamber, and the height of the cushion layer is lower than that of the water inlet.
4. A rainwater shut off device according to claim 3 and also comprising: a basket grid;
the basket grid is arranged in the first rainwater chamber and located between the cushion layer and the screen.
5. A rainwater cut-off device according to claim 1, characterised in that the level of the water outlet is above the level of the water inlet.
6. A rainwater interception device according to claim 2, characterized in that said anti-theft top plate is provided with a viewing port;
the rainwater cut-off device further comprises: an observation window; the observation window is arranged on the observation port.
7. A rainwater shut off device according to claim 1 and also comprising: a one-way valve;
the check valve includes: the valve seat, the pressure spring and the sealing block; the valve seat is provided with a rainwater channel, a sealing section and a water outlet section, the rainwater channel, the sealing section and the water outlet section are communicated, the valve seat is arranged on the water outlet, the rainwater channel is communicated with an external sewage pipe network pipeline, the sealing block abuts against the sealing section, one end of the pressure spring abuts against the sealing block, and the other end of the pressure spring abuts against the water outlet section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921703245.5U CN211006993U (en) | 2019-09-30 | 2019-09-30 | Rainwater cut-off device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921703245.5U CN211006993U (en) | 2019-09-30 | 2019-09-30 | Rainwater cut-off device |
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| CN211006993U true CN211006993U (en) | 2020-07-14 |
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| CN201921703245.5U Active CN211006993U (en) | 2019-09-30 | 2019-09-30 | Rainwater cut-off device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115435866A (en) * | 2022-10-18 | 2022-12-06 | 武汉锐科智能科技有限公司 | Hydraulic engineering is with measuring fluviograph convenient to installation |
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2019
- 2019-09-30 CN CN201921703245.5U patent/CN211006993U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115435866A (en) * | 2022-10-18 | 2022-12-06 | 武汉锐科智能科技有限公司 | Hydraulic engineering is with measuring fluviograph convenient to installation |
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