CN206988223U - Variable pressure hydraulic pumping plant - Google Patents
Variable pressure hydraulic pumping plant Download PDFInfo
- Publication number
- CN206988223U CN206988223U CN201720456097.6U CN201720456097U CN206988223U CN 206988223 U CN206988223 U CN 206988223U CN 201720456097 U CN201720456097 U CN 201720456097U CN 206988223 U CN206988223 U CN 206988223U
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- CN
- China
- Prior art keywords
- temperature sensitive
- sensitive member
- output channel
- cleaning part
- rtd
- 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.)
- Expired - Fee Related
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Abstract
This patent belongs to field of hydraulic control,A kind of more particularly to pressure control device,Specifically disclose a kind of variable pressure hydraulic pumping plant,Including output channel,Temperature sensitive member,Flow measuring element,Pressure responsive element,PLC control modules,Frequency converter,Motor and hydraulic pump,Temperature sensitive member,Flow measuring element and pressure responsive element are arranged in output channel,Unloading electromagnetic valve is installed in output channel,Temperature sensitive member,Flow measuring element,Pressure responsive element,Frequency converter and unloading electromagnetic valve electrically connect with PLC control modules respectively,Frequency converter electrically connects with motor,Hydraulic pump is connected to the output end of motor,Temperature sensitive member includes shell,RTD,Connecting rod and cleaning part,Cleaning part is provided with through hole,RTD is slidably connected in through hole,Connecting rod is rotatably connected on cleaning part,Connecting rod is threaded in shell,It is fixed on shell on output channel.The present apparatus can realize automatic flow control and the Stress control of hydraulic station.
Description
Technical field
The utility model belongs to field of hydraulic control, more particularly to a kind of pressure control device.
Background technology
The top of large-sized object is lifted, translation, in lifting engineering construction, when with hydraulic pressure provide top lift, translation, the work needed for lifting
When firmly, hydraulic power unit is the power source of whole lifting system.During work by console to the flow of hydraulic power unit, pressure,
Direction is controlled, and to realize the control to hydraulic actuator speed of action, amount of force and the direction of motion, reaches peace
Entirely, object is smoothly placed in the position of design requirement.It is cumbersome by consing process due to the complexity of pump stations condition,
Therefore the hydraulic power unit of a kind of achievable automatic flow control and Stress control is needed.
Utility model content
The purpose of this utility model is to provide a kind of variable pressure hydraulic pumping plant, to realize automatic flow control and pressure control
System.
In order to achieve the above object, base case of the present utility model is to provide a kind of variable pressure hydraulic pumping plant, including defeated
Go out pipeline, temperature sensitive member, flow measuring element, pressure responsive element, PLC control modules, frequency converter, motor and hydraulic pressure
Pump, temperature sensitive member, flow measuring element and pressure responsive element are arranged in output channel, and electricity is provided with output channel
Magnetic unloading valve, temperature sensitive member, flow measuring element, pressure responsive element, frequency converter and unloading electromagnetic valve are controlled with PLC respectively
Molding block electrically connects, and frequency converter electrically connects with motor, and hydraulic pump is connected to the output end of motor, and temperature sensitive member includes outer
Shell, shaft-like RTD, connecting rod and the cleaning part for clearing up RTD, it is fixed on output channel on shell, cleaning part
Through hole is provided with, RTD is slidably connected in through hole, and connecting rod is rotatably connected on cleaning part, and connecting rod is threadedly coupled outside
In shell.
The principle of this base case is：Target flow value is set in PLC control modules, positioned at the stream of output channel
Electric signal is passed to PLC control modules by measurement element, is calculated by the program inside PLC control modules, when actual flow value
During with target flow value difference, PLC control module output signals make the rotating speed of Frequency Converter Control motor, so as to control hydraulic pump defeated
The flow gone out, makes flow maintain target flow value.
When needing to adjust hydraulic power unit output pressure, the pressure value of unloading electromagnetic valve is set in PLC control modules, works as reality
When border pressure value exceedes the pressure value of setting, unloading electromagnetic valve off-load, the output pressure of hydraulic power unit is set to maintain the electricity of setting
The pressure value of magnetic unloading valve.
Temperature value is set in PLC control modules, signal is transmitted to PLC control modules by temperature sensitive member, when temperature exceedes
During setting value, PLC control modules output signal to frequency converter, leave the motor off rotation, so that hydraulic pump stops output.
Shell is fixed on output channel, because connecting rod is threaded in shell.When being rotatablely connected bar, connecting rod
Moved with cleaning part, cleaning part relatively moves with RTD.Because RTD is slidably connected with cleaning part, cleaning part moves
Greasy dirt on RTD can be wiped off when dynamic.
The beneficial effect of this base case is：1. the present apparatus can be automatic right according to the value set in PLC control modules
Flow and output pressure are adjusted, and realize automatically controlling for flow and pressure.
2. when temperature exceedes the value of setting, hydraulic pump is automatically stopped work, prevents in the higher temperature damage present apparatus
Component, while effectively prevent temperature raise and cause equipment significant trouble.
3. cleaning part produces relative slide with RTD, the surface grease of RTD is cleared up, eliminates grease
Influence, ensure that platinum resistor temperature measuring is accurate.
Prioritization scheme one：Also include electromagnetic proportional valve, electromagnetic proportional valve is arranged in output channel, electromagnetic proportional valve with
PLC control modules electrically connect.Proportioning valve degree of regulation is high, and when needing to adjust flow, electric signal is sent by PLC control modules
Electromagnetic proportional valve and frequency converter are controlled simultaneously, reaches the accurate adjustment to flow.
Prioritization scheme two：Also include signal conversion module and for showing signal conversion module input information and control signal
The touch-screen of modular converter output information, touch-screen electrically connect with signal conversion module, PLC processing modules and signal modulus of conversion
Block electrically connects.Temperature value, pressure value, the flow value in the present apparatus can be read by touch-screen, and touch-screen can be passed through
Adjust pressure value, flow value and the temperature value of PLC module.
Prioritization scheme three：The cleaning part is in shaft-like.Shaft-like cleaning part easy processing, and with shaft-like RTD shape phase
Closely, relative to other shapes, material has been saved.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment variable pressure hydraulic pumping plant；
Fig. 2 is the schematic diagram of temperature sensitive member.
Embodiment
The utility model is described in further detail below by embodiment：
Reference in Figure of description includes：RTD 1, shell 2, nut 3, connecting rod 4, output channel 5, big end
6th, cleaning part 7.
Embodiment：Variable pressure hydraulic pumping plant in this programme, as shown in figure 1, including output channel 5, temperature sensitive member,
Flow measuring element, pressure responsive element, PLC control modules, frequency converter, motor, hydraulic pump, touch-screen and signal modulus of conversion
The model S7-1200 of block, wherein PLC module.Temperature sensitive member, pressure responsive element and stream are installed in output channel 5
Detecting element is measured, temperature sensitive member, pressure responsive element and flow detecting element are connected with PLC control modules by wire.
Unloading electromagnetic valve and electromagnetic proportional valve are also equipped with output channel 5, unloading electromagnetic valve, frequency converter, electromagnetic proportional valve and PLC are controlled
Molding block is connected by wire, and frequency converter is connected with motor by wire, and hydraulic pump is arranged on the output end of motor.
As shown in Fig. 2 temperature sensitive member is the temperature sensitive member of RTD 1, including shell 2, shaft-like RTD 1,
Connecting rod 4 and shaft-like cleaning part 7, shell 2 are in the form of a column, and shell 2 is threaded on output channel 5.Have in shell 2 interior
Chamber, wiring board is installed in inner chamber, on wiring board soldering have two piece-root grafting terminals, RTD 1 is fixed on the bottom of shell 2, RTD 1
It is connected by wire with binding post.Connecting rod 4 is threaded in shell 2, integrally formed with through hole on cleaning part 7, in through hole
Wall has some tiny projections, for cleaning RTD 1.RTD 1 is located in through hole, and RTD 1 contacts with through-hole wall, and
It can relatively move.The bottom of connecting rod 4 is rotatablely connected with cleaning part 7, and the portion integral of connecting rod 4 forms big end 6, is prevented clear
Part 7 is washed to come off.The upper weld of connecting rod 4 has nut 3, it is necessary to when cleaning RTD 1, and turning nut 3 makes connecting rod be transported about 4
Dynamic, connecting rod 4 drives cleaning part 7 to move up and down, and through-hole wall is contacted and relatively moved with the surface of RTD 1, on through hole
Tiny projection resistive surface is cleared up, the greasy dirt of the surfaces stick of RTD 1 is removed.
Signal conversion module is connected with touch-screen by wire, and signal conversion module is connected with PLC control modules by wire
Connect.The electric signal that signal conversion module collection PLC control modules transmit, shown after converted on the touchscreen, for operation
Person monitors hydraulic station working condition.Operator adjusts the parameter value of each component to adjust hydraulic station by operation touch-screen
Pressure, flow, such as adjust unloading electromagnetic valve pressure unloading.
Above-described is only embodiment of the present utility model, and the general knowledge such as known concrete structure and characteristic is herein in scheme
Do not describe excessively.It should be pointed out that for those skilled in the art, the premise of the utility model structure is not being departed from
Under, several modifications and improvements can also be made, these should also be considered as the scope of protection of the utility model, and these are all without influence
The effect and practical applicability that the utility model is implemented.This application claims protection domain should be with the content of its claim
It is defined, the record such as embodiment in specification can be used for the content for explaining claim.
Claims (4)
1. variable pressure hydraulic pumping plant, including output channel, temperature sensitive member, flow measuring element, pressure responsive element, PLC
Control module, frequency converter, motor and hydraulic pump, temperature sensitive member, flow measuring element and pressure responsive element are arranged on defeated
Go out in pipeline, unloading electromagnetic valve is installed in output channel, it is characterised in that temperature sensitive member, flow measuring element, pressure
Sensing element, frequency converter and unloading electromagnetic valve electrically connect with PLC control modules respectively, and frequency converter electrically connects with motor, hydraulic pump
It is connected to the output end of motor, temperature sensitive member includes shell, the shaft-like RTD for thermometric, connecting rod and for clear
The cleaning part of RTD is managed, is fixed on shell on output channel, cleaning part is provided with through hole, and RTD is slidably connected at through hole
Interior, connecting rod is rotatably connected on cleaning part, and connecting rod is threaded in shell.
2. variable pressure hydraulic pumping plant according to claim 1, it is characterised in that：Also include electromagnetic proportional valve, solenoid-operated proportional
Valve is arranged in output channel, and electromagnetic proportional valve electrically connects with PLC control modules.
3. variable pressure hydraulic pumping plant according to claim 1 or 2, it is characterised in that：Also include signal conversion module and use
In the touch-screen of display signal conversion module input information and control signal modular converter output information, touch-screen is changed with signal
Module electrically connects, and PLC processing modules electrically connect with signal conversion module.
4. variable pressure hydraulic pumping plant according to claim 1, it is characterised in that：The cleaning part is in shaft-like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720456097.6U CN206988223U (en) | 2017-04-27 | 2017-04-27 | Variable pressure hydraulic pumping plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720456097.6U CN206988223U (en) | 2017-04-27 | 2017-04-27 | Variable pressure hydraulic pumping plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206988223U true CN206988223U (en) | 2018-02-09 |
Family
ID=61391649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720456097.6U Expired - Fee Related CN206988223U (en) | 2017-04-27 | 2017-04-27 | Variable pressure hydraulic pumping plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206988223U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109484605A (en) * | 2018-11-22 | 2019-03-19 | 武汉船用机械有限责任公司 | A kind of efficient ship steering method |
-
2017
- 2017-04-27 CN CN201720456097.6U patent/CN206988223U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109484605A (en) * | 2018-11-22 | 2019-03-19 | 武汉船用机械有限责任公司 | A kind of efficient ship steering method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180209 Termination date: 20190427 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |