CN217782225U - Stabilized soil mixing station constant pressure water supply device - Google Patents
Stabilized soil mixing station constant pressure water supply device Download PDFInfo
- Publication number
- CN217782225U CN217782225U CN202123318761.6U CN202123318761U CN217782225U CN 217782225 U CN217782225 U CN 217782225U CN 202123318761 U CN202123318761 U CN 202123318761U CN 217782225 U CN217782225 U CN 217782225U
- Authority
- CN
- China
- Prior art keywords
- water
- pressure
- proportional valve
- water tank
- frequency converter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
Landscapes
- Control Of Fluid Pressure (AREA)
Abstract
The utility model discloses a constant pressure water supply device for a stabilized soil mixing station, which comprises a pressure water tank, a remote pressure gauge, a water pump, a frequency converter, a water tank, a proportional valve, a water outlet pipeline and a controller; the pressure water tank is provided with a water inlet and a water outlet, the water inlet is communicated with the water pump through a pipeline, and the water pump is arranged in the water tank; the water outlet is connected with a water outlet pipeline, and a proportional valve is arranged on the water outlet pipeline; the top of the pressure water tank is provided with a remote pressure gauge, the remote pressure gauge is electrically connected with the frequency converter, and the frequency converter is electrically connected with the water pump; the controller is electrically connected with the proportional valve. The utility model discloses the installation is simple, and is with low costs, and it is simple convenient to maintain.
Description
Technical Field
The utility model relates to a water supply field especially relates to a stabilized soil mixing station constant pressure water supply installation.
Background
At present, in the application of stabilized soil mixing station equipment at home and abroad, aggregate is metered by a belt scale, and powder is metered by a subtraction scale or a spiral scale. The water is in a manual frequency conversion control mode or a frequency conversion automatic metering mode based on a flowmeter; the manual frequency conversion control of water has poor precision and is applied to the process quality requirement with low requirement. Under the condition of strict requirements on large-scale engineering, key engineering or process quality, the method of flow meter and frequency conversion control is adopted to ensure the precision requirement of continuous water metering.
However, the flow meter is high in installation mode and use, so that the cost of a control system is high, the maintenance cost is high, and the accuracy of the flow meter is influenced under the interference of a strong electromagnetic field. Based on this, a stabilized soil mixing station constant pressure water supply installation based on electromagnetism proportional valve has been proposed.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model provides a stabilized soil mixing station constant voltage water supply installation is provided.
The utility model provides an above-mentioned technical problem's technical scheme as follows:
a constant-pressure water supply device for a stabilized soil mixing station comprises a pressure water tank, a remote transmission pressure gauge, a water pump, a frequency converter, a water tank, a proportional valve, a water outlet pipeline and a controller;
the pressure water tank is provided with a water inlet and a water outlet, the water inlet is communicated with the water pump through a pipeline, and the water pump is arranged in the water tank; the water outlet is connected with a water outlet pipeline, and a proportional valve is arranged on the water outlet pipeline;
the top of the pressure water tank is provided with a remote pressure gauge, the remote pressure gauge is electrically connected with the frequency converter, and the frequency converter is electrically connected with the water pump; the controller is electrically connected with the proportional valve.
Furthermore, the pressure water tank is provided with a water inlet which is higher than the water outlet.
Further, the device also comprises a display, and the display is electrically connected with the controller.
Further, the proportional valve is an electromagnetic proportional valve.
Compared with the prior art, the utility model discloses following technological effect has:
the top end of the pressure water tank is provided with a remote transmission pressure gauge, the feedback value of the remote transmission pressure gauge is 4-20ma and is connected to the analog input end of the frequency converter, the output of the frequency converter controls the water pump, the frequency converter drives the water pump to work in an acceleration and deceleration mode, the water supply amount is adjusted by adjusting the rotating speed of the water pump, the variable-frequency constant-pressure water supply of the water pump is realized, and the pressure of the pressure water tank and the pressure of the water outlet pipeline are kept constant; the proportional valve controls the opening and closing degree section size of the water outlet pipeline, and the opening and closing degree section of the proportional valve determines the flow rate of water outlet quantity; the controller is connected with the proportional valve (0-10V), the controller automatically adjusts the opening and closing degree section size of the proportional valve according to the set flow, and the controller automatically ensures the constant flow continuous work of the discharged water; the device is simple to install, low in cost, simple and convenient to maintain and worthy of popularization.
Drawings
Fig. 1 is the utility model discloses a stabilized soil mixing station constant pressure water supply installation's schematic structure.
In the drawings, the parts names represented by the respective reference numerals are listed as follows:
1. a display; 2. a controller; 3. a water outlet pipeline; 4. a proportional valve; 5. a pressure water tank; 6. a remote pressure gauge; 7. a water pump; 8. a frequency converter; 9. a water tank.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
Example 1
The utility model provides a constant pressure water supply device for a stabilized soil mixing station, which comprises a pressure water tank 5, a remote pressure gauge 6, a water pump 7, a frequency converter 8, a water tank 9, a proportional valve 4, a water outlet pipeline 3 and a controller 2;
the pressure water tank 5 is provided with a water inlet and a water outlet, the water inlet is communicated with the water pump 7 through a pipeline, and the water pump 7 is arranged in the water tank 9; the water outlet is connected with a water outlet pipeline, and a proportional valve 4 is arranged on the water outlet pipeline;
the top of the pressure water tank 5 is provided with a remote pressure gauge 6, the remote pressure gauge 6 is electrically connected with the frequency converter 8, and the frequency converter 8 is electrically connected with the water pump 7; the pressure water tank 5, the remote transmission pressure gauge 6, the water pump 7, the frequency converter 8 and the water tank 9 form a constant-pressure water supply system, the remote transmission pressure gauge 5 outputs 0-10V electric signals and is connected to an analog quantity input end of the frequency converter 8, the frequency converter 8 is set to be in a PID (proportion integration differentiation) constant-pressure water supply mode, the frequency converter 8 drives the water pump 7 to work in an acceleration and deceleration mode, and the water pump 7 pressurizes water from the water tank 9 to the pressure water tank 5.
The controller 2 is electrically connected with the proportional valve 4, and the proportional valve 4 is an electromagnetic proportional valve.
The pressure water tank 5 is provided with a water inlet which is higher than the water outlet, so that water can be conveniently fed and discharged.
The working principle is as follows: the remote transmission pressure gauge sends a feedback value to the input end of the frequency converter; the frequency converter drives the water pump to work at an accelerated speed, and the water supply amount is adjusted by adjusting the rotating speed of the water pump, so that the variable-frequency constant-pressure water supply of the water pump is realized; the control method comprises the steps that a 0-10V electric signal is input through a manual adjusting controller, the 0-10V electric signal is converted into an instantaneous flow value in the controller according to a flow algorithm, the controller adjusts the opening and closing degree section size of an electromagnetic proportional valve according to the scale value flow corresponding to the 0-10V input value of a potentiometer in a manual state, and the flow size of water yield is determined through adjusting the electromagnetic proportional valve.
Specifically, the relationship between the pressure and the flow in the pipeline is a direct proportional relationship, that is, the larger the pressure is, the larger the flow is, the flow is equal to the flow velocity multiplied by the section of the pipeline, for any section of the pipeline, the pressure only comes from one end, the direction of the pressure is unidirectional, and when an outlet in the pressure direction is closed (a valve is closed), the fluid in the pipeline is in a forbidden state; once the outlet is open, the flow rate depends on the pressure in the pipe, so that at the same pipe pressure, pipe diameter, the flow of water is only related to the pipe open cross section at the end of the pipe.
The controller automatically calculates the real-time flow value of the water under the opening degree of the valve according to the output value (namely the opening degree section of the valve) of the proportional valve of 0-10V on the flow algorithm.
Wherein, the engineering calculation about the flow rate:
Q＝π*d 2 /4*3600*V(m 3 /h)
in the formula: q is the flow m 3 /h；
d is the inner diameter m of the pipeline;
v is the average speed m/s of the fluid;
engineering calculations on flow rate:
1) The flow in the pipe is also related to the gradient of pressure drop along the pipe, so that the key is to ensure that the constant pressure at the front end of the electromagnetic proportional valve and the specific resistance s of the pipeline at the rear end are as small as possible, and the specific resistance s =0.001736/d of the pipeline is calculated according to the Schweinff formula 5.3 Or with s =10.3n2/d 5.33 Calculating;
2) Determining the action head difference H = P/(rho g) at two ends of the pipeline, if the horizontal drop H exists (the starting end of the outlet pipeline of the electromagnetic proportional valve is higher than the tail end by H), then H = P/(rho g) + H,
in the formula: h is in m;
p is the pressure difference at two ends of the pipeline (when the water outlet pipeline is as short as possible and the ratio is as small as possible, the pressure difference can be defined as the pressure of the section), and P takes Pa as a unit;
ρ is the density of water, unit: g/cm 2 ；
Velocity V =4 (H/sL) (1/2) /(π*d 2 )；
H is the water head difference between the beginning end and the tail end of the pipeline, and m is taken as a unit;
l is the length from the beginning to the end of the pipeline, and is m.
3) In order to ensure the accuracy of the instantaneous flow and the accumulated flow of the water, the controller is designed with the function of calibrating the accumulated flow, before the equipment is put into use, the equipment continuously works for 5-10 minutes, the ratio K of the weighing value of the actual water yield and the accumulated flow value calculated by the controller is used as a correction parameter (the default is 1).
Example 2
The utility model provides a stabilized soil mixing station constant voltage water supply installation, lie in with embodiment 1's difference, the device still includes display 1, display 1 with 2 electricity of controller are connected, set for in display 1, show and save data.
Specifically, the working flow (ton/hour) of water is set in the display 1, and the controller 2 controls the switch section of the proportional valve 4 according to an algorithm and calibration data to ensure constant water flow in the water outlet pipeline 3; the controller 2 calculates the instantaneous flow and the accumulated flow in the pipeline 3 in real time, and displays and stores the data in the display 1.
The working principle is as follows: the remote transmission pressure gauge sends a feedback value to the input end of the frequency converter; the frequency converter drives the water pump to work at an accelerated speed, and the water supply amount is adjusted by adjusting the rotating speed of the water pump, so that the variable-frequency constant-pressure water supply of the water pump is realized; the display device sets the flow value of the required water supply amount; the controller automatically adjusts the opening and closing degree section size of the electromagnetic proportional valve according to the set flow, and the flow of the water yield is determined by adjusting the electromagnetic proportional valve.
The utility model discloses the installation is simple, and is with low costs, and it is simple convenient to maintain, and spreading value is high.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (4)
1. A constant-pressure water supply device of a stabilized soil mixing station is characterized by comprising a pressure water tank, a remote transmission pressure gauge, a water pump, a frequency converter, a water tank, a proportional valve, a water outlet pipeline and a controller;
the pressure water tank is provided with a water inlet and a water outlet, the water inlet is communicated with the water pump through a pipeline, and the water pump is arranged in the water tank; the water outlet is connected with a water outlet pipeline, and a proportional valve is arranged on the water outlet pipeline;
the top of the pressure water tank is provided with a remote pressure gauge, the remote pressure gauge is electrically connected with the frequency converter, and the frequency converter is electrically connected with the water pump; the controller is electrically connected with the proportional valve.
2. The constant pressure water supply device of a stabilized soil mixing station as claimed in claim 1, wherein said pressure water tank is provided with a water inlet at a position higher than said water outlet.
3. The constant pressure water supply apparatus of stabilized soil mixing station as claimed in claim 1, further comprising a display, said display being electrically connected to said controller.
4. The constant pressure water supply device of the stabilized soil mixing station as claimed in claim 1, wherein the proportional valve is an electromagnetic proportional valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123318761.6U CN217782225U (en) | 2021-12-27 | 2021-12-27 | Stabilized soil mixing station constant pressure water supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123318761.6U CN217782225U (en) | 2021-12-27 | 2021-12-27 | Stabilized soil mixing station constant pressure water supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217782225U true CN217782225U (en) | 2022-11-11 |
Family
ID=83905010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123318761.6U Active CN217782225U (en) | 2021-12-27 | 2021-12-27 | Stabilized soil mixing station constant pressure water supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217782225U (en) |
-
2021
- 2021-12-27 CN CN202123318761.6U patent/CN217782225U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110182924B (en) | Full-automatic ammonia preparing and adding integrated machine device and full-automatic ammonia preparing and adding method | |
| CN107014468A (en) | Compressed gas-driven liquid runoff calibration device and its calibration method | |
| WO2020209806A1 (en) | Calibration method for liquid flowmeter | |
| CN108507834B (en) | Online real-time detection device and method for pulp concentration | |
| CN110411524A (en) | PWM mode fertilzer sucking pipe road flow quantity detecting system and control method | |
| CN204115829U (en) | A kind of combine detection system | |
| CN108845609B (en) | Gas filling system and method | |
| CN209894230U (en) | Intelligent accurate metering device | |
| CN217782225U (en) | Stabilized soil mixing station constant pressure water supply device | |
| CN208138124U (en) | A kind of metering pump control system accurately controlling flow | |
| CN109765940A (en) | A kind of automatic flow control system for hydraulic model test | |
| CN106768127A (en) | A kind of pulsed flow accurate measurement and control system and method | |
| CN107324638B (en) | Automatic liquid level control device and method for glass fiber kiln | |
| CN206579010U (en) | One kind is used for the on-line automatic regulating system of silicone adhesive quantity-produced flow | |
| CN206573952U (en) | A kind of Generator Stator Cooling water basification automaton | |
| CN209560374U (en) | A kind of flow control system suitable for hydraulic model test | |
| CN213397290U (en) | Intelligent flow control device and flow verification system | |
| CN104881052B (en) | Uninanned platform removes from office the flow interval closed loop control method and special purpose device of feeder | |
| CN212293707U (en) | Titanium tetrachloride high-precision continuous weighing automatic feeding system for titanium sponge production | |
| CN2735786Y (en) | Feedstuff grease adding device | |
| CN106696111A (en) | Flow online automatic regulating system and method for silicone adhesive continuous production | |
| CN107336361A (en) | The constant pressure and flow foam device of light-weight foamed concrete equipment | |
| CN208937986U (en) | A kind of strength of fluid automatic regulating system | |
| CN204856227U (en) | Flow intermittent type closed -loop control's of solvent -free synthetic leather material loading machine isolated plant | |
| CN106522304B (en) | Gravity flow pressure regulating difference water supply system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |