CN204040107U - A kind of water delivery pumping station system - Google Patents
A kind of water delivery pumping station system Download PDFInfo
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- CN204040107U CN204040107U CN201420384762.1U CN201420384762U CN204040107U CN 204040107 U CN204040107 U CN 204040107U CN 201420384762 U CN201420384762 U CN 201420384762U CN 204040107 U CN204040107 U CN 204040107U
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Abstract
The utility model discloses a kind of water delivery pumping station system, belong to water system technical field.This system comprises the first water delivery line, first water delivery line comprises: the first pond using waterline to connect successively, the first water pump, the first flap valve, the first electrical ball valve and the first butterfly control valve, waterline between first flap valve and the first electrical ball valve is connected with the first reflux pipeline, one end of first reflux pipeline connects the output of the first flap valve, the other end of the first reflux pipeline connects the first pond, waterline between first water pump and the first pond is provided with the first electric butterfly valve, the first reflux pipeline is provided with the second electrical ball valve.By controlling the valve opening of the first butterfly control valve, effectively can regulate the size of the discharge of the outlet of waterline, prevent discharge from increasing suddenly and cause the first water pump overload, improve pump efficiency, it also avoid discharge and increase suddenly and form the destruction of water hammer effect to relevant valve member and pipeline.
Description
Technical field
The utility model relates to water system technical field, particularly a kind of water delivery pumping station system.
Background technology
In recent years, pipeline water delivery becomes to serve a town with water or the preferred manner of other water requirements gradually, supplies water relative to open channel, and the mode of pipeline water delivery has protection water quality, reduces floor space in a large number, reduces the irreplaceable advantages such as water loss.
Using that pipeline water delivery mode is carried out on a large scale, long distance water transfer time, usually can design the water delivery pumping station system of a set of coupling, common water delivery pumping station system generally comprises engine pump group, all kinds of control valve member and waterline; The security reliability of water delivery pumping station system is vital problem, and field engineering experience and existing result of study show, appropriate design water delivery pumping station system effectively can reduce failure risk and the energy loss of water-carriage system.
But realizing in process of the present utility model, inventor finds that prior art at least exists following problem:
Existing water delivery pumping station system not can solve engine pump group and opens and closes suddenly, when controlling valve member accidental damage, the water hammer effect that discharge in water delivery pumping station system increases suddenly and causes, water hammer effect can cause the pump efficiency step-down of engine pump group, and easily causes the damage of control valve member and the pipeline of being correlated with.
Utility model content
In order to solve the problem of prior art, the utility model embodiment provides a kind of water delivery pumping station system.Technical scheme is as follows:
A kind of water delivery pumping station system, described system comprises the first water delivery line, described first water delivery line comprises: the first pond using waterline to connect successively, the first water pump, the first flap valve, the first electrical ball valve and the first butterfly control valve, waterline between described first flap valve and described first electrical ball valve is connected with the first reflux pipeline, one end of described first reflux pipeline connects the output of described first flap valve, the other end of described first reflux pipeline connects described first pond
Waterline between described first water pump and described first pond is provided with the first electric butterfly valve, described first reflux pipeline is provided with the second electrical ball valve.
Further, the both sides of described first butterfly control valve are parallel with the 3rd electrical ball valve.
Further, the first pond liquid level controller and the first pond liquid level sensor that connect corresponding to described first pond liquid level controller is provided with in described first pond.
Further, the exit of described first water pump is provided with the first pressure sensor.
Further, the first Hand-operated butterfly valve is in series with between described first electric butterfly valve and described first water pump.
Further, described system also comprises the second water delivery line, described second water delivery line comprises: the second pond using waterline to connect successively, the second water pump, the second flap valve, the 4th electrical ball valve and the second butterfly control valve, waterline between described second flap valve and described 4th electrical ball valve is connected with the second reflux pipeline, one end of described second reflux pipeline connects the output of described second flap valve, the other end of described second reflux pipeline connects described second pond
Waterline between described second water pump and described second pond is provided with the second electric butterfly valve, described second reflux pipeline is provided with the 5th electrical ball valve;
Use waterline to be communicated with between the delivery port of described first electric butterfly valve and the delivery port of described second electric butterfly valve, and the pipeline be communicated with between described first electric butterfly valve with described second electric butterfly valve arranges the second Hand-operated butterfly valve; Use waterline to be communicated with between the delivery port of described first electrical ball valve and the delivery port of described 4th electrical ball valve, and the pipeline be communicated with between described first electrical ball valve with described 4th electrical ball valve arranges the 6th electrical ball valve.
Further, the both sides of described second butterfly control valve are parallel with the 7th electrical ball valve.
Further, the second pond liquid level controller and the second pond liquid level sensor that connect corresponding to described second pond liquid level controller is provided with in described second pond.
Further, the exit of described second water pump is provided with the second pressure sensor.
Further, described system also comprises the 3rd water delivery line, and described 3rd water delivery line comprises the 4th Hand-operated butterfly valve, the 3rd water pump, the 3rd flap valve and the 8th electrical ball valve that use waterline to connect successively,
Waterline between described 3rd flap valve and described 8th electrical ball valve is connected with the 3rd reflux pipeline, one end of described 3rd reflux pipeline connects the output of described 3rd flap valve, the other end of described 3rd reflux pipeline connects described second pond, and described 3rd reflux pipeline arranges the 9th electrical ball valve;
The water inlet of described 4th Hand-operated butterfly valve is communicated with the waterline between described second Hand-operated butterfly valve, the second electric butterfly valve, is provided with the 5th Hand-operated butterfly valve between described 4th Hand-operated butterfly valve and described second electric butterfly valve;
The delivery port of described 8th electrical ball valve is communicated with the waterline between described 6th electrical ball valve, the 4th electrical ball valve, is provided with the tenth electrical ball valve between described 8th electrical ball valve and described 4th electrical ball valve.
The beneficial effect of the technical scheme that the utility model embodiment provides is:
By arranging the first flap valve at the first water delivery side of pump, the first flap valve only allows one-directional fluid flow, the water in waterline can be avoided to flow backwards under fortuitous event and form water hammer effect and damage water pump; Simultaneously, the waterline of the first water delivery side of pump is provided with the first butterfly control valve, by controlling the valve opening of the first butterfly control valve, effectively can regulate the size of the discharge of the outlet of waterline, prevent discharge from increasing suddenly and cause the first water pump overload, improve pump efficiency, it also avoid discharge increase suddenly and the water hammer effect formed to the destruction of relevant valve member and pipeline.
Accompanying drawing explanation
Fig. 1 is the structure chart of a kind of water delivery pumping station system of the utility model embodiment.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
Use in the scene of water system at some, the aqueduct of water system inevitably there will be water hammer effect, water hammer effect generally refers to feed pump in water system when starting and stop, water impact pipeline and the serious water attack of one produced, because the inside pipe wall of water pipe is very smooth, flow is very rapid, and current kinetic energy under effect of inertia increases rapidly and produces destruction, can produce larger pressure to valve, inside pipe wall and feed pump.Therefore, the structure of appropriate design water delivery pumping station system is very important to reduce water hammer effect.
Embodiment
See Fig. 1, the utility model embodiment provides a kind of water delivery pumping station system, this system comprises the first water delivery line 1, first water delivery line 1 comprises: use the first pond 101 that waterline is connected successively, first water pump 102, first flap valve 103, first electrical ball valve 104 and the first butterfly control valve 105, waterline between first flap valve 103 and the first electrical ball valve 104 is connected with the first reflux pipeline 106, one end of first reflux pipeline 106 connects the output of the first flap valve 103, the other end of the first reflux pipeline 106 connects the first pond 101, waterline between first water pump 102 and the first pond 101 is provided with the first electric butterfly valve 107, first reflux pipeline 106 is provided with the second electrical ball valve 108.
Particularly, the first pond 101, for receiving the water storing upper level pumping plant and transport, is next stage pumping plant or the water supply of other water systems by the first water pump 102 after being drawn water; In the present embodiment, the first flap valve 103 is the dynamic flap valve of high pressure, can automatically close, the fluid damage do not refluxed with the water pump that adequately protects when current flow backwards; First electrical ball valve 104 is for controlling blocking and unlatching of the exit waterline of the first flap valve 103; The discharge that can control in pipeline by regulating the aperture of the first butterfly control valve 105, prevents flow from increasing suddenly and causing water pump to transship, and improves pump efficiency; First electric butterfly valve 107 is for controlling blocking and unlatching of the first exit, pond 101 waterline; Arranging of first reflux pipeline 106 can ensure that the first water pump 102 is in shutdown process, completes the low discharge circulation that water in pipeline gets back to pond, prevents cavitation and damage water pump; The setting of the second electrical ball valve 108 is used for blocking or unblank first reflux pipeline 106.
Further, the both sides of the first butterfly control valve 105 are parallel with the 3rd electrical ball valve 109.
Particularly, the 3rd electrical ball valve 109 is close at the initial stage that the first water pump 102 starts, and the aperture now by controlling the first butterfly control valve 105 controls the discharge in waterline; First water pump 102 starts completely, and the aperture of the first butterfly control valve 107 increases when throttling action itself is weakened gradually, needs closedown first butterfly control valve 105 and opens the 3rd electrical ball valve 109, to complete water delivery process more smoothly.
Further, the first pond liquid level controller 1011 and the first pond liquid level sensor that connect corresponding to the first pond liquid level controller 1011 is provided with in the first pond 101.
Particularly, the effect of the first pond liquid level sensor (not shown) is the liquid level determining the first pond 101, the imported valve and outlet valve that control water inlet and water outlet is provided with in first pond 101, first pond liquid level controller 1011 specifically according to liquid level sensor obtain liquid level, by controlling the aperture of the terminal valve in the first pond 101 to maintain pond liquid level dynamic equilibrium.
Further, the exit of the first water pump 102 is provided with the first pressure sensor (not shown).
Particularly, first pressure sensor is for testing the outlet pressure of the first water pump 102, certain difference in height may be there is between current pumping plant and next stage pumping plant or water storage point, during the pipeline static pressure predetermined value only having the exit pressure levels when the water pump of current pumping plant to exceed to be determined by difference in height, current pumping plant ability stable water supply, now, pumping station system can close the first reflux pipeline 106, opens the first electrical ball valve 104 after the first flap valve 103.
Further, the first Hand-operated butterfly valve 110 is in series with between the first electric butterfly valve 104 and the first water pump 102.
Particularly, the first Hand-operated butterfly valve 110 is connected with the first electric butterfly valve 104, can as the waterline headstock gear of redundancy.
Further, this system also comprises the second water delivery line 2, second water delivery line 2 comprises: use the second pond 201 that waterline is connected successively, second water pump 202, second flap valve 203, 4th electrical ball valve 204 and the second butterfly control valve 205, waterline between second flap valve 203 and the 4th electrical ball valve 204 is connected with the second reflux pipeline 206, one end of second reflux pipeline 206 connects the output of the second flap valve 203, the other end of the second reflux pipeline 206 connects the second pond 201, waterline between second water pump 202 and the second pond 201 is provided with the second electric butterfly valve 207, second reflux pipeline 206 is provided with the 5th electrical ball valve 208, use waterline to be communicated with between the delivery port of the first electric butterfly valve 107 and the delivery port of the second electric butterfly valve 207, and the pipeline be communicated with between the first electric butterfly valve 107 with the second electric butterfly valve 207 arranges the second Hand-operated butterfly valve 111, use waterline to be communicated with between the delivery port of the first electrical ball valve 104 and the delivery port of the 4th electrical ball valve 204, and the pipeline be communicated with between the first electrical ball valve 104 with the 4th electrical ball valve 204 arranges the 6th electrical ball valve 112.
Particularly, in indusqtrial water supply, damage is caused to pumping station system equipment in order to avoid shutting down suddenly due to water pump, usually two groups of water pump parallel connections can be used to use, during to ensure wherein one group of corrective maintenance, another group still can normally work, in the present embodiment, by arranging waterline by the first water delivery line 1 and the second water delivery line 2 parallel communication, the waterline be communicated with arranges the second Hand-operated butterfly valve 111 and the 6th electrical ball valve 112, make can be communicated with or to block between two water delivery lines, on second water delivery line 2, the beneficial effect of relevant apparatus can with reference to the same apparatus on the first water delivery line 1, meanwhile, the second electric butterfly valve and the second pump house be also in series with the 3rd Hand-operated butterfly valve the 210, three Hand-operated butterfly valve 210 can as the waterline headstock gear of the opening part redundancy of the second water pump 202.
Further, the both sides of the second butterfly control valve 205 are parallel with the 7th electrical ball valve 209.
Particularly, the setting of the 7th electrical ball valve 209 is used in the aperture of the second butterfly control valve 205 comparatively large, when throttling action weakens, closes the second butterfly control valve 205 and opens the 7th electrical ball valve 209, to complete water delivery process more smoothly.
Further, the second pond liquid level controller 2011 and the second pond liquid level sensor that connect corresponding to the second pond liquid level controller is provided with in the second pond 201.
Particularly, the effect of the second pond liquid level sensor (not shown) is the liquid level determining the second pond 201, the imported valve and outlet valve that control water inlet and water outlet is provided with in second pond 201, second pond liquid level controller 2011 specifically according to liquid level sensor obtain liquid level, by controlling the terminal valve aperture in the second pond 201 to maintain pond liquid level dynamic equilibrium.
Further, the exit of the second water pump 202 is provided with the second pressure sensor (not shown).
Particularly, second pressure sensor is for testing the outlet pressure of the second water pump 202, certain difference in height may be there is between current pumping plant and next stage pumping plant or water storage point, during the pipeline static pressure predetermined value only having the exit pressure levels when the water pump of current pumping plant to exceed to be determined by difference in height, current pumping plant ability stable water supply, now, pumping station system can close the second reflux pipeline 206, opens the 4th electrical ball valve 204 after the second flap valve 203.
Further, this system also comprises the 3rd water delivery line 3,3rd water delivery line 3 comprises the 4th Hand-operated butterfly valve 301, the 3rd water pump 302, the 3rd flap valve 303 and the 8th electrical ball valve 304 that use waterline to connect successively, waterline between 3rd flap valve 303 and the 8th electrical ball valve 304 is connected with the 3rd reflux pipeline 305, one end of 3rd reflux pipeline 305 connects the output of the 3rd flap valve 303, the other end of the 3rd reflux pipeline 305 connects on the second pond the 201, three reflux pipeline 305 and arranges the 9th electrical ball valve 306; The water inlet of the 4th Hand-operated butterfly valve 301 is communicated with the waterline between the second Hand-operated butterfly valve 111, second electric butterfly valve 207, is provided with the 5th Hand-operated butterfly valve 211 between the 4th Hand-operated butterfly valve 301 and the second electric butterfly valve 207; The delivery port of the 8th electrical ball valve 304 is communicated with the waterline between the 6th electrical ball valve 112, the 4th electrical ball valve 204, is provided with the tenth electrical ball valve 212 between the 8th electrical ball valve 304 and the 4th electrical ball valve 204.
Particularly, because the equipment on water delivery line is very important and sometimes need continuous operation, once shut down because of equipment fault, comparatively major break down or loss will be caused, in the present embodiment, the first water delivery line 1 and the second water delivery line 2 belong to conventional water delivery line, 3rd 3, water delivery line, as water delivery line for subsequent use, can be devoted oneself to work immediately when other two water delivery line generation problems; On 3rd water delivery line 3, the beneficial effect of relevant apparatus can with reference to the same apparatus on the first water delivery line 1.
The start-up course of the water delivery pumping station system of the present embodiment is as follows:
S1: the liquid level being determined pumping plant first pond 101 and the second pond 201 by the first pond liquid level controller 1011 and the second pond liquid level controller 2011.
S2: selected two-tube to dual-purpose one of double pump for mode of operation, the first water pump 102 and the second water pump 202 are enabled and the 3rd water pump 302 is for subsequent use; First butterfly control valve 107, second electrical ball valve 108, first Hand-operated butterfly valve 110, second electric butterfly valve 207, the 5th electrical ball valve 208, the 3rd Hand-operated butterfly valve 210 are opened, and the first flap valve 103 and the second flap valve 203 keep often opening; First electric butterfly valve 104, the 3rd electrical ball valve 109, second Hand-operated butterfly valve 111, the 6th electrical ball valve 112, the 4th electrical ball valve 204, the 7th electrical ball valve 209, the 5th Hand-operated butterfly valve 211, the tenth electrical ball valve 212 are closed; First butterfly control valve 105 and the second butterfly control valve 205 keep aperture to be 30%;
S3: the engine engine starting water pump, the temperature of Real-Time Monitoring high-temperature cooling water, when the temperature of cooling water reaches 70 DEG C, increases engine speed;
S4: use the first pressure sensor and the second pressure sensor to test the outlet pressure of the first water pump 102 and the second water pump 202, when the force value of exit of pump exceedes waterline static pressure, open the first electrical ball valve 104 and the 4th electrical ball valve 204, close the second electrical ball valve 108 and the 5th electrical ball valve 208;
S5: the aperture slowly increasing the first butterfly control valve 105 and the second butterfly control valve 205, when the aperture of two butterfly control valves is increased to 80%, the throttling action of butterfly control valve weakens, now open the 3rd electrical ball valve 109 and the 7th electrical ball valve 209, close the first butterfly control valve 105 and the second butterfly control valve 205, realize the smooth water flowing of this pumping plant downward one-level pumping plant or watering equipment.
The water delivery pumping station system that the utility model embodiment provides, by arranging the first flap valve at the first water delivery side of pump, first flap valve only allows one-directional fluid flow, the water in waterline can be avoided to flow backwards under fortuitous event and form water hammer effect and damage water pump; Simultaneously, the waterline of the first water delivery side of pump is provided with the first butterfly control valve, by controlling the valve opening of the first butterfly control valve, effectively can regulate the size of the discharge of the outlet of waterline, prevent discharge from increasing suddenly and cause the first water pump overload, improve pump efficiency, it also avoid discharge increase suddenly and the water hammer effect formed to the destruction of relevant valve member and pipeline; By arranging the second conventional water delivery line and the 3rd water delivery line for subsequent use, the pumping station system of the present embodiment is made to have stronger stability.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a water delivery pumping station system, it is characterized in that, described system comprises the first water delivery line, described first water delivery line comprises: the first pond using waterline to connect successively, the first water pump, the first flap valve, the first electrical ball valve and the first butterfly control valve, waterline between described first flap valve and described first electrical ball valve is connected with the first reflux pipeline, one end of described first reflux pipeline connects the output of described first flap valve, the other end of described first reflux pipeline connects described first pond
Waterline between described first water pump and described first pond is provided with the first electric butterfly valve, described first reflux pipeline is provided with the second electrical ball valve.
2. system according to claim 1, is characterized in that, the both sides of described first butterfly control valve are parallel with the 3rd electrical ball valve.
3. system according to claim 1, is characterized in that, is provided with the first pond liquid level controller and the first pond liquid level sensor that connect corresponding to described first pond liquid level controller in described first pond.
4. system according to claim 1, is characterized in that, the exit of described first water pump is provided with the first pressure sensor.
5. the system according to any one of claim 1-4, is characterized in that, is in series with the first Hand-operated butterfly valve between described first electric butterfly valve and described first water pump.
6. system according to claim 1, it is characterized in that, described system also comprises the second water delivery line, described second water delivery line comprises: the second pond using waterline to connect successively, the second water pump, the second flap valve, the 4th electrical ball valve and the second butterfly control valve, waterline between described second flap valve and described 4th electrical ball valve is connected with the second reflux pipeline, one end of described second reflux pipeline connects the output of described second flap valve, the other end of described second reflux pipeline connects described second pond
Waterline between described second water pump and described second pond is provided with the second electric butterfly valve, described second reflux pipeline is provided with the 5th electrical ball valve;
Use waterline to be communicated with between the delivery port of described first electric butterfly valve and the delivery port of described second electric butterfly valve, and the pipeline be communicated with between described first electric butterfly valve with described second electric butterfly valve arranges the second Hand-operated butterfly valve; Use waterline to be communicated with between the delivery port of described first electrical ball valve and the delivery port of described 4th electrical ball valve, and the pipeline be communicated with between described first electrical ball valve with described 4th electrical ball valve arranges the 6th electrical ball valve.
7. system according to claim 6, is characterized in that, the both sides of described second butterfly control valve are parallel with the 7th electrical ball valve.
8. system according to claim 6, is characterized in that, is provided with the second pond liquid level controller and the second pond liquid level sensor that connect corresponding to described second pond liquid level controller in described second pond.
9. system according to claim 6, is characterized in that, the exit of described second water pump is provided with the second pressure sensor.
10. system according to claim 6, is characterized in that, described system also comprises the 3rd water delivery line, and described 3rd water delivery line comprises the 4th Hand-operated butterfly valve, the 3rd water pump, the 3rd flap valve and the 8th electrical ball valve that use waterline to connect successively,
Waterline between described 3rd flap valve and described 8th electrical ball valve is connected with the 3rd reflux pipeline, one end of described 3rd reflux pipeline connects the output of described 3rd flap valve, the other end of described 3rd reflux pipeline connects described second pond, and described 3rd reflux pipeline arranges the 9th electrical ball valve;
The water inlet of described 4th Hand-operated butterfly valve is communicated with the waterline between described second Hand-operated butterfly valve, the second electric butterfly valve, is provided with the 5th Hand-operated butterfly valve between described 4th Hand-operated butterfly valve and described second electric butterfly valve;
The delivery port of described 8th electrical ball valve is communicated with the waterline between described 6th electrical ball valve, the 4th electrical ball valve, is provided with the tenth electrical ball valve between described 8th electrical ball valve and described 4th electrical ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420384762.1U CN204040107U (en) | 2014-07-11 | 2014-07-11 | A kind of water delivery pumping station system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420384762.1U CN204040107U (en) | 2014-07-11 | 2014-07-11 | A kind of water delivery pumping station system |
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| CN204040107U true CN204040107U (en) | 2014-12-24 |
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| CN201420384762.1U Expired - Fee Related CN204040107U (en) | 2014-07-11 | 2014-07-11 | A kind of water delivery pumping station system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840480A (en) * | 2016-05-24 | 2016-08-10 | 史仁朋 | Closed type four-stage series-parallel connection pump station system and control method thereof |
| CN106247562A (en) * | 2016-08-31 | 2016-12-21 | 珠海格力电器股份有限公司 | The variable flow control device of air-conditioning, air conditioning system and air conditioning control method |
| CN106499005A (en) * | 2016-10-14 | 2017-03-15 | 江苏大学镇江流体工程装备技术研究院 | A kind of water supply pump station feedback control system |
| CN107366625A (en) * | 2017-06-27 | 2017-11-21 | 江苏大学镇江流体工程装备技术研究院 | A kind of drainage pumping plant automatic control system and its design method |
| CN109885013A (en) * | 2019-03-31 | 2019-06-14 | 赵玉丹 | Pumping station system method of controlling security, device and pumping station system for hydraulic engineering |
-
2014
- 2014-07-11 CN CN201420384762.1U patent/CN204040107U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840480A (en) * | 2016-05-24 | 2016-08-10 | 史仁朋 | Closed type four-stage series-parallel connection pump station system and control method thereof |
| CN106247562A (en) * | 2016-08-31 | 2016-12-21 | 珠海格力电器股份有限公司 | The variable flow control device of air-conditioning, air conditioning system and air conditioning control method |
| CN106499005A (en) * | 2016-10-14 | 2017-03-15 | 江苏大学镇江流体工程装备技术研究院 | A kind of water supply pump station feedback control system |
| CN106499005B (en) * | 2016-10-14 | 2019-03-05 | 江苏大学镇江流体工程装备技术研究院 | A kind of water supply pump station feedback control system |
| CN107366625A (en) * | 2017-06-27 | 2017-11-21 | 江苏大学镇江流体工程装备技术研究院 | A kind of drainage pumping plant automatic control system and its design method |
| CN107366625B (en) * | 2017-06-27 | 2019-01-29 | 江苏京川水设备有限公司 | A kind of drainage pumping plant automatic control system and its design method |
| CN109885013A (en) * | 2019-03-31 | 2019-06-14 | 赵玉丹 | Pumping station system method of controlling security, device and pumping station system for hydraulic engineering |
| CN109885013B (en) * | 2019-03-31 | 2021-12-14 | 赵玉丹 | Pump station system safety control method and device for hydraulic engineering and pump station system |
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