CN110939583A - Intelligent anti-blocking electronic type vacuum water diversion controller - Google Patents
Intelligent anti-blocking electronic type vacuum water diversion controller Download PDFInfo
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- CN110939583A CN110939583A CN201911236170.9A CN201911236170A CN110939583A CN 110939583 A CN110939583 A CN 110939583A CN 201911236170 A CN201911236170 A CN 201911236170A CN 110939583 A CN110939583 A CN 110939583A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
- F04D29/4293—Details of fluid inlet or outlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/004—Priming of not self-priming pumps
- F04D9/006—Priming of not self-priming pumps by venting gas or using gas valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/04—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock
- F04D9/041—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock the priming pump having evacuating action
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/56—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The invention relates to an intelligent anti-blocking electronic type vacuum drainage controller which comprises a flow switch device, a net type pipeline filter and a visible transparent pipeline, wherein the flow switch device comprises a Wheatstone bridge detection unit and a micro-processing unit, the Wheatstone bridge detection unit converts the flow velocity of fluid in a vacuum pipeline in a pump station into a voltage signal, and the micro-processing unit sends a starting signal to a starting loop of a pump station host set when the voltage signal reaches a preset voltage threshold; the net type pipeline filter is arranged at a vacuum air outlet at the top end of a volute of a water pump of the pump station, and the visible transparent pipeline is arranged in a vacuum pipeline of the pump station. The vacuum pipeline is additionally provided with the filtering device and the transparent pipeline, so that the filtering effect and visualization can be improved, the pipeline and the valve can be effectively prevented from being blocked by impurities in water, meanwhile, the liquid flow value in the vacuum pipeline is accurately measured, the vacuum degree is judged, a starting instruction is conveniently and correctly sent, and misoperation and refusal are avoided.
Description
Technical Field
The invention relates to the technical field of vacuum drainage controllers, in particular to an intelligent anti-blocking electronic type vacuum drainage controller.
Background
With the continuous improvement of the technical level in each field, the rapid development of the pump station technology is promoted. The existing pump station is separated from the traditional rough management mode and is developing towards automation, safety, reliability and energy conservation. Therefore, the control technology of the pump station is required to have a real practical promotion. The automatic vacuumizing starting system of the centrifugal pump station unit is the most important example. Before the centrifugal pump is started, the water inlet channel and the pump body are filled with water, continuous water flow from the water inlet to the water outlet of the pump is formed under the action of centrifugal force generated by rotation of the impeller, and the centrifugal pump enters a normal operation process after the starting process of the centrifugal pump is finished. Generally, most pump stations adopt a starting method that a vacuum pipeline is additionally provided with a vacuum water diversion controller and a main motor control switch of a unit are linked.
Although the existing centrifugal machine has a certain degree of automation in starting, the actual working effect of the pump station is influenced due to the structural characteristics and the requirements of the precision and the reliability of the whole system. Specifically, as sundries such as waterweeds, leaves, waste plastics and the like exist in the water inlet channel, when the vacuum pump works, water enters the pump body and further enters the vacuum pipeline, and blockage is formed at the positions of the water diversion controller, the electromagnetic valve, the valve and the like, so that the vacuum system cannot work, and the maintenance amount is large. In addition, because the vacuum pipeline part is visible and transparent, the content and the blocking degree of impurities in the pipeline cannot be visually seen, and visual judgment cannot be provided for manual starting and system debugging. If sundries in the vacuum water diversion controller are seriously blocked, the buoy can not float normally, and the water diversion contact can not be closed after vacuum is formed. At the moment, the vacuum pump continues to operate, water is pumped to the vacuum pipeline, and when the vacuum pump is stopped, a water hammer can be generated in the pipeline to damage the vacuum pipeline.
In addition, the existing vacuum water diversion controller also has the problem of misoperation of the vacuum critical point water diversion controller or operation rejection after vacuum forming. The vacuum water-leading controller is mainly structurally characterized in that a reed pipe node and a magnetic float are arranged in a metal pipe, when gas exists in a pump body and a pipeline, the float does not move at the moment, and the inner contact of the reed pipe is in a normally open state. When the pump body and the pipeline are filled with water and air is discharged, the vacuum water diversion controller is filled with water, the buoy floats at the moment, the normally open contact of the reed switch is closed, a starting signal is sent out, and the host unit is started. When the critical point of vacuum is about to be reached in the water pump, a gas-water mixture in the pipeline enters the vacuum water diversion controller, the inner floater is lifted, the water diversion contact is connected, vacuum forming is started, the electric appliance is started, the starting loop of the main unit is further connected, the main unit is started by mistake under the condition of incomplete vacuum, and the water pump cannot discharge water, so that the starting times of the unit are increased, and the success rate of automatic starting is reduced; the float in the vacuum water diversion controller cannot float due to overlong service time, internal corrosion and sundries blockage, and a water diversion contact cannot be closed after vacuum is formed, so that the vacuum water diversion controller cannot be started normally.
Based on this, the automatic starting system of the existing centrifugal pump has certain defects and needs to be improved so as to meet the requirements of stable system, reliable work and convenient and fast operation.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an intelligent anti-blocking electronic type vacuum water diversion controller, wherein a filtering device is additionally arranged on a vacuum pipeline, and a transparent pipeline is additionally arranged, so that the filtering effect and visualization can be improved, the pipeline and a valve can be effectively prevented from being blocked by impurities in water, meanwhile, the liquid flow value in the vacuum pipeline is accurately measured, the vacuum degree is judged, so that a starting instruction can be correctly sent, and misoperation and refusal are avoided.
In order to achieve the above object, the present invention has the following configurations:
the invention provides an intelligent anti-blocking electronic type vacuum drainage controller which comprises a flow switch device, a net type pipeline filter and a visible transparent pipeline, wherein the flow switch device comprises a Wheatstone bridge detection unit and a micro-processing unit, the Wheatstone bridge detection unit converts the flow velocity of fluid in a vacuum pipeline in a pump station into a voltage signal, and the micro-processing unit sends a starting signal to a starting loop of a pump station host set when the voltage signal reaches a preset voltage threshold;
the net type pipeline filter is arranged at a vacuum air outlet at the top end of a volute of a water pump of the pump station, and the visible transparent pipeline is arranged in a vacuum pipeline of the pump station.
Optionally, the mesh-type pipe filter includes a metal pipe, a manifold and a stainless steel barrel-shaped filter screen, the manifold and the metal pipe form a certain angle, the stainless steel barrel-shaped filter screen is put in from a pipe orifice of the manifold, and the pipe orifice of the manifold is sealed by a bolt, water flow enters the manifold after entering from an inlet of the metal pipe, and flows out from an outlet of the metal pipe after passing through the stainless steel barrel-shaped filter screen.
Optionally, the visible transparent pipeline is an organic glass transparent pipeline.
Optionally, the two ends of the visible transparent pipeline are both processed into external threaded pipe orifices, and the visible transparent pipeline is connected to the vacuum pipeline of the pump station through the external threaded pipe orifices at the two ends.
Optionally, the flow switch device, the mesh type pipeline filter and the visible transparent pipeline are all arranged on a vacuum pumping outlet pipeline at the top of a volute of a water pump of the pump station.
Optionally, the mesh type pipe filter is installed between the starting point of the vacuum pumping outlet pipeline and the visible transparent pipeline, and the mesh type pipe filter is close to the top vacuum air outlet of the water pump, and the flow switching device is installed at the visible transparent pipeline.
Optionally, the wheatstone bridge comprises a first resistor, a second resistor, a third resistor, a fourth resistor and a heating element, the first resistor and the second resistor are thermistors, the heating element heats the second resistor, the first resistor and the third resistor are connected in series and then connected in parallel with the second resistor and the fourth resistor, and the fluid state in the vacuum pipeline is detected by detecting the temperature difference between the first resistor and the second resistor;
a node C is arranged between the first resistor and the third resistor, a node B is arranged between the second resistor and the fourth resistor, the node C and the node B are respectively connected with two input ends of an amplifier, and the output end of the amplifier is connected with the input end of the microprocessing unit after passing through an analog-to-digital converter.
Optionally, the flow switching device further includes a delay control module and an output control module;
when the micro-processing unit acquires a voltage signal output by the analog-to-digital converter, whether the voltage signal reaches a preset threshold value is judged, if the voltage signal does not reach the preset threshold value, the micro-processing unit controls the delay control module to start timing, the timing range is within, the micro-processing unit does not send a control signal to the output control module, the micro-processing unit judges that when the voltage signal is lower than the preset threshold value, the delay control module is controlled to stop timing and clear the timing, when the timing of the delay control module reaches the preset time threshold value, the micro-processing unit sends a control signal to the output control module, the output control module sends a starting signal to an automatic starting loop of a host unit of a pump station, and the host unit is started.
Optionally, the working power supply of the flow switching device is connected to the solenoid valve coil of the vacuum pipeline, and the flow switching device is connected in parallel with the solenoid valve coil of the vacuum pipeline.
Optionally, the controller further comprises a water level detection device, the water level detection device comprises an electronic water level gauge and a water level control unit, the electronic water level gauge detects the water level of the gas-liquid separator in the pump station, the water level control unit reads the detection data of the electronic water level gauge, and when the water level data is smaller than a preset water level threshold value, the electromagnetic valve of the water inlet pipeline of the gas-liquid separator is controlled to be opened to supplement water.
According to the invention, the vacuum pipeline is additionally provided with the filtering device, so that dirt and impurities are blocked in the sedimentation cup in front of the filter screen, and the sedimentation cup can be conveniently cleaned at any time after the vacuum process is finished, so that the impurities in water can be effectively prevented from blocking pipelines and valves; furthermore, the transparent pipeline is additionally arranged on the pipeline, so that whether vacuum is formed or not and the blocking condition in the pipeline can be directly watched, a judgment basis can be provided for manual starting, and the harmful phenomena that the vacuum pump is overloaded to generate wheeze and the like due to untimely manual starting are avoided; the vacuum drainage controller accurately measures the liquid flow value in the vacuum pipeline by adopting the flow switch device, judges the vacuum degree, so as to correctly send out a starting instruction and avoid misoperation and refusal, thereby providing the vacuum drainage controller with good visibility, obvious filtering effect and accurate control of the vacuum critical point.
Drawings
Fig. 1 is a schematic structural diagram of a flow switching device of an intelligent anti-clogging electronic vacuum drainage controller according to an embodiment of the present invention;
FIG. 2 is a schematic circuit diagram of a Wheatstone bridge detection unit according to an embodiment of the invention;
FIG. 3 is a schematic view showing the construction of a mesh type pipe filter according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a stainless steel barrel screen of a mesh type pipe filter according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a visible transparent pipeline according to an embodiment of the present invention.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.
The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to provide a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In some instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring the invention.
The vacuum water-guiding controller has the main task of judging the water filling state in the water pump, so that the water filling state in the water pump can be converted into the liquid flow in the vacuum pipeline. When the water pump is not full of water, air flows in the pipeline; when the water pump is full of water, the water flows in the vacuum pipeline. Because of the structure of the water pump, the pipeline installation and other reasons, the water pump is in the process of vacuumizing, the air in the environment enters the pump body along the sealing position of the water pump and the leakage position of the pipeline, and the extracted air quantity is larger than the leaked air quantity, so the air in the pump body is gradually reduced, and the water is gradually increased. If the water pump is started at the moment, the water pump cannot normally discharge water after running, and the unit is failed to start. This is why the prior art water pump assembly is prone to start-up failure.
The invention provides an intelligent anti-clogging electronic type vacuum drainage controller, which comprises a flow switch device, a net type pipeline filter and a visible transparent pipeline, wherein as shown in figure 1, the flow switch device comprises a detection unit and a micro-processing unit, the detection unit is a Wheatstone bridge detection unit, the Wheatstone bridge detection unit converts the flow velocity of fluid in a vacuum pipeline in a pump station into a voltage signal, and the micro-processing unit sends a starting signal to a starting loop of a host unit when the voltage signal reaches a preset voltage threshold; the net type pipeline filter is arranged at a vacuum air outlet at the top end of a volute of a water pump of the pump station, and the visible transparent pipeline is arranged in a vacuum pipeline of the pump station. Because the high reliability of the Wheatstone bridge determines the stability and reliability of the flow sensor, corresponding optimization design and combination are carried out on the basis, and the vacuum water-guiding controller which has compact structure, convenient installation, strong corrosion resistance, stable work, stronger shock resistance and interference resistance, high sensitivity, stable output, good linearity and wide application range can be manufactured.
The general pipe diameter of vacuum line is not big, and the gas tightness requires highly, because pump station vacuum system all uses when the unit starts up, and the unit is after operation and when shutting down, vacuum system is in standby state. Therefore, the pipeline is filled with humid air for a long time, and the corrosion of the pipeline and the pipe fittings is accelerated. Therefore, the material of the anti-clogging device for vacuum lines is required to be strong in corrosion resistance and to have corresponding mechanical properties. Therefore, the air tightness and firmness of the vacuum pipeline are guaranteed, and sundries in the water pump block the vacuum pipeline effectively in the vacuum process, so that the vacuum process of the unit becomes more reliable. The invention adopts the net type pipeline filter, has the advantages of simple structure, easy manufacture and processing, low material requirement, convenient maintenance, wide application range and the like, and is suitable for being applied to the vacuum pipeline of the water conservancy pump station.
The vacuum pipelines of the pump station are all water gas pipes, and the water flow and air flow states in the pipelines are not visual. Therefore, it is necessary to add a transparent visual device in the system pipeline to visually observe the instant state of water flow and air flow in the pipeline. The visual device is required to have certain light transmittance and mechanical property, is arranged in a vacuum pipeline, and has the capabilities of resisting vibration and corrosion. In the vacuum process, the flowing condition of the air flow in the pipeline and the existence state of impurities can be visually observed, and reliable visual reference data are provided for manual starting and vacuum system experiments under emergency conditions.
As shown in fig. 2, in this embodiment, the wheatstone bridge includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, and a heating element R, wherein the first resistor R1 and the second resistor R2 are thermistors, the heating element R heats the second resistor R2, the first resistor R1 and the third resistor R3 are connected in series and then connected in parallel with the second resistor R2 and the fourth resistor R4, and the fluid state in the vacuum line is detected by detecting the temperature difference between the first resistor R1 and the second resistor R2.
A C node is arranged between the first resistor R1 and the third resistor R3, a B node is arranged between the second resistor R2 and the fourth resistor R4, the C node and the B node are respectively connected with two input ends of an amplifier, and the output end of the amplifier is connected with the input end of the microprocessing unit after passing through the analog-to-digital converter. After power-up, the heating element R operates, resulting in a temperature difference between the two standard resistances R1, R2. This difference is constant when the medium is not flowing. If the medium flows, the heat on the heating element R will be removed and the temperature will decrease. Two thermistors: the change in the voltage across the first resistor R1 and the second resistor R2 causes the voltage across the measuring bridge B, C to change immediately. The change in voltage represents a change in real-time flow rate.
As shown in fig. 3 and 4, in this embodiment, the mesh type pipe filter includes a metal pipe G1, a manifold G2, and a stainless steel barrel filter G4, the manifold G2 is at an angle (e.g., 60 °, but the present invention is not limited thereto) to the metal pipe G1, the stainless steel barrel filter G4 is inserted from the opening of the manifold G2, the opening of the manifold G2 is sealed with a bolt G3, and water flows into the manifold G2 after entering from the inlet of the metal pipe G1, passes through the stainless steel barrel filter G4, and then flows out from the outlet of the metal pipe G1. In use, debris is trapped within the barrel filter and can be cleaned by opening the manifold bolt G3 when the vacuum pump is not operating.
The vacuum pipeline anti-blocking device has high air tightness requirement, and avoids vacuum failure caused by leakage. Because the pump station vacuum system is applied when the unit is started, the vacuum system is in a standby state after the unit is operated and when the unit is stopped. Therefore, the pipeline is filled with humid air for a long time, so that the corrosion of the pipeline and the pipe fitting is accelerated, and the device material is required to have stronger corrosion resistance. The vacuum pipeline anti-blocking device is arranged at a vacuum air outlet at the top end of a volute of a water pump of the unit, so that the vibration of the unit directly examines the mechanical property of the device, certain anti-seismic and anti-bending properties are required, and the rigidity and hardness of the material meet the use requirements. Based on the vacuum pipeline anti-blocking device, brass ZCuZn38 is selected as the material of the vacuum pipeline anti-blocking device and is cast and molded.
In this embodiment, the visual transparent pipeline is an organic glass transparent pipeline, and organic glass has the characteristics of high light transmittance, easiness in processing, strong bending and seismic resistance and good toughness. As shown in fig. 5, both ends of the visible transparent pipeline K1 are processed into external screw thread nozzles K2, and the visible transparent pipeline K1 is connected to the vacuum pipeline of the pump station through the external screw thread nozzles K2 at both ends. During preparation, an organic glass rod can be selected, a lathe is used for drilling holes in the direction perpendicular to the circular cross section, the organic glass rod is processed into an organic glass tube, then the inner diameter of the tube is polished to reach a certain degree of finish, and the condition inside the tube can be clearly seen. And (3) turning the two ends of the pipeline K1 to form external thread pipe orifices, wherein the thread pitch of the external thread pipe orifices is consistent with that of a common cast iron pipe fitting, and when the external thread pipe orifices are used, the external thread pipe orifices are installed according to the installation method of a common pipeline.
In this embodiment, the flow switch device, the mesh type pipeline filter and the visible transparent pipeline are all arranged on a vacuum-pumping outlet pipeline at the top of a volute of a water pump of the pump station. In this embodiment, the mesh type pipe filter is installed between the starting point of the evacuation outlet pipe and the visible transparent pipe, and the mesh type pipe filter is close to the top vacuum outlet port of the water pump, and the flow switching device is installed at the visible transparent pipe. The net type pipeline filter is a first node which is connected with the water pump and the vacuum pipeline, and can intercept sundries in the water pump and prevent the sundries from blocking the vacuum pipeline. Through pipe fittings and valves, the vacuum pipeline visual device is installed, and the flow state and the change of water in the pipeline can be conveniently observed. The top end of the pipeline and the passage of the electromagnetic valve are provided with a flow switch device, a 220V alternating current power supply of the flow switch device is connected in parallel with the electromagnetic valve coil communicated with the flow switch device and works with the electromagnetic valve at the same time, the vacuum forming condition in the water pump is detected, the starting signal is timely and accurately sent out, and the starting success rate is ensured.
In this embodiment, the flow switch device further includes a delay control module and an output control module; when the micro-processing unit acquires a voltage signal output by the analog-to-digital converter, whether the voltage signal reaches a preset threshold value is judged, if the voltage signal does not reach the preset threshold value, the micro-processing unit controls the delay control module to start timing, the timing range is within, the micro-processing unit does not send a control signal to the output control module, the micro-processing unit judges that when the voltage signal is lower than the preset threshold value, the delay control module is controlled to stop timing and clear the timing, when the timing of the delay control module reaches the preset time threshold value, the micro-processing unit sends a control signal to the output control module, the output control module sends a starting signal to an automatic starting loop of a host unit of a pump station, and the host unit is started. The controllable delay control module effectively overcomes control misoperation caused by the false water level, so that the control is more reliable, and the influence of the false liquid level caused by liquid foam can be overcome.
In this embodiment, the flow switching device is disposed at a top end of a vacuum outlet pipeline at a top of a volute of a water pump of the pump station, and the first resistor and the second resistor are disposed in the vacuum outlet pipeline. Specifically, a vacuum water diversion controller is arranged on the top end of the pipeline and a passage of an electromagnetic valve coil of the vacuum pipeline, a 200V alternating current power supply of the vacuum water diversion controller is connected in parallel with the electromagnetic valve coil communicated with the vacuum water diversion controller and works with the electromagnetic valve simultaneously to detect the vacuum forming condition in the water pump, timely and accurately send out a starting-up signal and ensure the success rate of starting-up. The embodiment adopts the alternating voltage to supply power to the electrode, overcomes the electric erosion phenomenon generated by the direct voltage power supply, effectively prolongs the service life of the electrode and reduces the operation dimension cost.
Because the flow switch device is arranged at a vacuumizing air outlet at the top of a water pump volute of the unit, the flow switch device needs to directly bear the vibration test of the water pump. The joint for installing the pipeline has enough strength, so that the shell of the vacuum water diversion controller is made of full alloy and integrally formed, no movable part is arranged, and maintenance-free is realized. Considering that the probe of the vacuum water-guiding controller directly contacts with the water body in the pipeline and the probe is a main temperature sensing measuring element, the high-quality austenitic stainless steel material 1Gr18Ni9Ti with good heat conduction and strong corrosion resistance is required to be selected.
The vacuum water diversion controller has the advantages that the humidity of the running environment air is high, and the environment temperature is very high due to the heat generated by the operation of the motor in summer, so that the built-in heating module is adopted in the embodiment, the temperature of each internal resistor is compensated, the working consistency of each resistor is ensured, and the error caused by temperature drift is avoided.
In this embodiment, the controller further includes a water level detection device, the water level detection device includes an electronic water level gauge and a water level control unit, the electronic water level gauge detects the water level of the gas-liquid separator in the pump station, the water level control unit reads the detection data of the electronic water level gauge, and when the water level data is smaller than a preset water level threshold, the electromagnetic valve of the water inlet pipeline of the gas-liquid separator is controlled to be opened to replenish water. Therefore, the invention can further reliably detect and reflect the water filling condition of the vacuum pump, can control the vacuum liquid separator to automatically supply water at a low water level and automatically cut off water at a high water level, and can cut off the control loop of the vacuum pump under the condition of the low water level. Therefore, the water level detection device is reliable in operation, and high in safety factor, and the characteristics of high corrosion resistance and high anti-interference capability are required to be met.
According to the invention, the vacuum pipeline is additionally provided with the filtering device, so that dirt and impurities are blocked in the sedimentation cup in front of the filter screen, and the sedimentation cup can be conveniently cleaned at any time after the vacuum process is finished, so that the impurities in water can be effectively prevented from blocking pipelines and valves; furthermore, the transparent pipeline is additionally arranged on the pipeline, so that whether vacuum is formed or not and the blocking condition in the pipeline can be directly watched, a judgment basis can be provided for manual starting, and the harmful phenomena that the vacuum pump is overloaded to generate wheeze and the like due to untimely manual starting are avoided; the vacuum drainage controller accurately measures the liquid flow value in the vacuum pipeline by adopting the flow switch device, judges the vacuum degree, so as to correctly send out a starting instruction and avoid misoperation and refusal, thereby providing the vacuum drainage controller with good visibility, obvious filtering effect and accurate control of the vacuum critical point.
The starting success rate of the existing vacuum starting system is very low, and according to the statistics of historical data, the starting success rate of the vacuum starting system is only 35% -40%, so that sometimes, one pump needs to be started three times or even more than three times to be started successfully, 78 degrees are consumed when the pump is started once, 234 degrees are consumed when the pump is started three times, and each degree of electricity is calculated according to 0.8 yuan, and 187.2 yuan is needed. Therefore, the cost of opening the machine twice is 124.8 yuan more. 6240 yuan may be wasted by starting a pump 50 times a year. When the number of pumps is large, the economic loss is greater. In addition, the pump station unit is also increased in impact loss after multiple startup, and the motor, the water pump and the pipeline are greatly impacted when being started every time, so that the effective service lives of the pump station unit and the vacuum system are shortened, and the maintenance cost is increased. The start-up time is prolonged, and the water supply guarantee rate is also reduced. Because rigid water supply is adopted between the pump station and the user, and the relay pump station is arranged in the middle, the startup delay can influence the coordination of the whole water supply. The intelligent electronic vacuum drainage controller of the invention can ensure that the vacuum drainage controller can be started successfully at one time, and one pump can save more than 6000 yuan per year, thereby greatly reducing the cost. The vacuum water diversion controller has the advantages of stable structure, convenient installation and simple maintenance, can reduce the purchase cost, can greatly save the cost of later maintenance and repair, and has good market prospect.
The visual transparent pipeline and the time delay control module can reduce misoperation to the maximum extent and ensure the integrity of equipment. If serious misoperation occurs, the large pump can be damaged, and economic loss is more probable. The cost of overhaul of each unit is about 20000 yuan. The number of times of starting the unit affects the overhaul period of the unit; the vacuum pipeline is disassembled and assembled once, and 2 working days are needed; the unit operation time is affected to be approximately 4 hours. Therefore, by adopting the structure of the invention, a large amount of maintenance cost can be saved every year.
In this specification, the invention has been described with reference to specific embodiments thereof. It will, however, be evident that various modifications and changes may be made thereto without departing from the broader spirit and scope of the invention. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.
Claims (10)
1. An intelligent anti-clogging electronic type vacuum drainage controller is characterized by comprising a flow switch device, a net type pipeline filter and a visible transparent pipeline, wherein the flow switch device comprises a Wheatstone bridge detection unit and a micro-processing unit, the Wheatstone bridge detection unit converts the flow velocity of fluid in a vacuum pipeline in a pump station into a voltage signal, and the micro-processing unit sends a starting signal to a starting loop of a pump station host set when the voltage signal reaches a preset voltage threshold value;
the net type pipeline filter is arranged at a vacuum air outlet at the top end of a volute of a water pump of the pump station, and the visible transparent pipeline is arranged in a vacuum pipeline of the pump station.
2. The intelligent anti-clogging electronic vacuum drainage controller according to claim 1, wherein the mesh-type pipe filter comprises a metal pipe, a manifold and a stainless steel barrel filter, the manifold is at an angle to the metal pipe, the stainless steel barrel filter is put in from the orifice of the manifold, the orifice of the manifold is sealed by a bolt, water enters the manifold from the inlet of the metal pipe, and flows out from the outlet of the metal pipe after passing through the stainless steel barrel filter.
3. The intelligent anti-clogging electronic vacuum drainage controller according to claim 1, wherein the visible transparent pipeline is an organic glass transparent pipeline.
4. The intelligent anti-clogging electronic vacuum drainage controller according to claim 3, wherein both ends of the visible transparent pipeline are processed into external threaded pipe orifices, and the visible transparent pipeline is connected to the vacuum pipeline of the pump station through the external threaded pipe orifices at both ends.
5. The intelligent anti-clogging electronic vacuum drainage controller according to claim 1, wherein the flow switch device, the mesh type pipeline filter and the visible transparent pipeline are all arranged on a vacuum pumping outlet pipeline at the top of a volute of a water pump of the pump station.
6. The intelligent anti-clogging electronic vacuum drainage controller according to claim 5, wherein the mesh-type pipe filter is installed between the starting point of the vacuum outlet pipeline and the visible transparent pipeline, and the mesh-type pipe filter is close to the top vacuum air outlet of the water pump, and the flow switch device is installed at the visible transparent pipeline.
7. The intelligent anti-clogging electronic vacuum drainage controller according to claim 1, wherein the wheatstone bridge comprises a first resistor, a second resistor, a third resistor, a fourth resistor and a heating element, the first resistor and the second resistor are thermistors, the heating element heats the second resistor, the first resistor and the third resistor are connected in series and then connected in parallel with the second resistor and the fourth resistor which are connected in series, and the fluid state in the vacuum pipeline is detected by detecting the temperature difference between the first resistor and the second resistor;
a node C is arranged between the first resistor and the third resistor, a node B is arranged between the second resistor and the fourth resistor, the node C and the node B are respectively connected with two input ends of an amplifier, and the output end of the amplifier is connected with the input end of the microprocessing unit after passing through an analog-to-digital converter.
8. The intelligent anti-clogging electronic vacuum drainage controller according to claim 7, wherein the flow switch device further comprises a delay control module and an output control module;
when the micro-processing unit acquires a voltage signal output by the analog-to-digital converter, whether the voltage signal reaches a preset threshold value is judged, if the voltage signal does not reach the preset threshold value, the micro-processing unit controls the delay control module to start timing, the timing range is within, the micro-processing unit does not send a control signal to the output control module, the micro-processing unit judges that when the voltage signal is lower than the preset threshold value, the delay control module is controlled to stop timing and clear the timing, when the timing of the delay control module reaches the preset time threshold value, the micro-processing unit sends a control signal to the output control module, the output control module sends a starting signal to an automatic starting loop of a host unit of a pump station, and the host unit is started.
9. The intelligent anti-clogging electronic vacuum drainage controller according to claim 1, wherein the operating power supply of the flow switching device is connected to the solenoid valve coil of the vacuum line, and the flow switching device is connected in parallel with the solenoid valve coil of the vacuum line.
10. The intelligent anti-clogging electronic vacuum drainage controller according to claim 1, wherein the controller further comprises a water level detection device, the water level detection device comprises an electronic water level gauge and a water level control unit, the electronic water level gauge detects the water level of the gas-liquid separator in the pump station, the water level control unit reads detection data of the electronic water level gauge, and when the water level data is smaller than a preset water level threshold value, the water level control unit controls an electromagnetic valve of a water inlet pipeline of the gas-liquid separator to be opened to replenish water.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911236170.9A CN110939583A (en) | 2019-12-05 | 2019-12-05 | Intelligent anti-blocking electronic type vacuum water diversion controller |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911236170.9A CN110939583A (en) | 2019-12-05 | 2019-12-05 | Intelligent anti-blocking electronic type vacuum water diversion controller |
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| CN110939583A true CN110939583A (en) | 2020-03-31 |
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Application publication date: 20200331 |