CN201635981U - Hydraulic test pump with adjustable flow rate - Google Patents
Hydraulic test pump with adjustable flow rate Download PDFInfo
- Publication number
- CN201635981U CN201635981U CN2009201888433U CN200920188843U CN201635981U CN 201635981 U CN201635981 U CN 201635981U CN 2009201888433 U CN2009201888433 U CN 2009201888433U CN 200920188843 U CN200920188843 U CN 200920188843U CN 201635981 U CN201635981 U CN 201635981U
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- CN
- China
- Prior art keywords
- hydraulic test
- test pump
- frequency variator
- pressure testing
- motor
- 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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- Control Of Positive-Displacement Pumps (AREA)
Abstract
The utility model relates to a device capable of achieving the purpose of adjusting the outflow rate of a hydraulic test pump by steplessly adjusting the rotational speed of the motor of the hydraulic test pump through a converter circuit and finally realizing adjustable pressure-boosting speed. The device is suitable for various conditions with strict pressure-boosting speed requirements during the pressure test process, particularly for the field of high-precision pressure tests of small containers. The method and the device are mainly characterized in that no change is required to be made at the mechanical part and the motor part of the hydraulic test pump; moreover, the use is very convenient.
Description
Technical field
The utility model relates to a kind of being reached by circuit control hydraulic test pump motor speed to be regulated the hydraulic test pump water flow and finally realizes the device that the rate of rise is adjustable, being applicable to variously has the place of strict demand to pressure testing speed, is particluarly suitable for the field of small container highi degree of accuracy pressure testing.
Background technique
At present, known hydraulic test pump all is the pressure testing mode that mechanical part adjusts water flow.Its pressure testing speed all is uncontrollable, and its water flow is only regulated on the pressure testing pump housing roughly, and the adjusting difficulty is big, and complicated operation damages the pump housing easily.For carrying out the high-precision pressure testing of small container (such as the hydrostatic test) to the major steam line of nuclear power plant; common motor test pump can't be accomplished; because in the pressure testing process; not only to reach the pressure testing curve of regulation; and do not allow to shut down midway; as long as occur shutting down phenomenon in the pressure testing process, whole pressure testing process just must be redo.
Summary of the invention
In order to overcome the deficiency of existing hydraulic test pump, a frequency variator is installed on hydraulic test pump, and " S " shaped steel system splash guard (7) is installed on common hydraulic test pump water tank, and in " S " cavity frequency variator (2) is installed at an upper portion thereof, top control knob plate (3) is installed at " S " plate top, it then is directly to introduce frequency variator (2) by three phase mains directly to insert hydraulic test pump motor (4) by the output of frequency variator again that its circuit connects, and complete machine control then is the hydraulic test pump that is directly connected top control knob plate (3) by frequency variator (2) internal control port.The operation of such hydraulic test pump can just can be operated on hydraulic test pump easily, and the water flow of hydraulic test pump can electrodeless adjusting between 1/10～8 times.As long as press dynamic frequency rising button, the highest working flow can be with 8 times proper functioning the time comes water filling, has improved waterflood injection rate between the flood period at pressure testing initial stage.In the process of boosting, the requirement of the curve that boosts of the underproof object volume and the process of boosting, need to reduce the water flow of hydraulic test pump, as long as on the pump housing, press the lower button of dynamic frequency, water flow in the time of just can minimumly being transferred to minimum 10% proper functioning comes pressure testing, can reduce the rate of rise, reach the requirement of the curve that boosts.
The technological scheme that its technical problem that solves the utility model adopts is: the frequency variator that connects a can regulate frequency at the motor power-supply wire leading portion of hydraulic test pump, use just commentaries on classics in the control port that frequency variator carries, stop, frequency rises, frequency descends and the com terminal, realize just changeing startup, stop, frequency is heightened and frequency is turned down.Frequency-tuning range is step-less adjustment in 5Hz-400Hz, makes it at any time control and to regulate its rotating speed to the motor of hydraulic test pump.In the injecting process before pressure testing, can jump to 400Hz to frequency, the hydraulic test pump rotating speed of motor is normal 8 times, and injection flow also is normal 8 times like this.In the pressure testing process, if the rate of rise is too fast, the injection flow that the pump housing is described is too big, at this moment can turn down electric machine frequency, minimumly can be transferred to 5Hz, hydraulic test pump rotating speed of motor at this moment is 10% of a rated speed, rotating speed of motor descends, thereby the mechanical motion of the pressure testing pump housing is slowed down, and makes the water flow of hydraulic test pump reduce, and the rate of rise is slowed down.Otherwise frequency is transferred big, and the rate of rise is accelerated.
The beneficial effects of the utility model are, can regulate pressure testing speed in the whole pressure testing process, can come water filling with the fastest waterflood injection rate, come pressure testing with the slowest rate of rise.Easy to adjust simple, the pressure testing process to the pressure testing pump housing without any damage.Add that used element all is the peripheral cell automatic control of the whole pressure testing process of realization easily of control automatically, accomplishes unmanned pressure testing automatically.Can be used for highi degree of accuracy pressure testing place.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is circuit theory diagrams of the present utility model.
Fig. 2 is the tectonic maps of hydraulic test pump.
1. power switches among the figure, 2. frequency variator, 3. control knob plate (wherein having start button, stop button, frequency upgrading button, frequency to reduce button respectively), 4. hydraulic test pump motor, 5. the hydraulic test pump machinery part of boosting, 6. hydraulic test pump water tank, 7.S type frequency variator waterproof mounting plate.
Embodiment
In Fig. 1, turn on the power switch (1), frequency variator on the hydraulic test pump (2) enter electric holding state, the outlet of frequency variator is connected with hydraulic test pump motor (4), when control knob plate (3) when obtaining manual control signal, hydraulic test pump motor (4) begins to rotate, its rotating speed is directly by other 2 fingertip controls of control knob plate (3), one is (maximum can reach 400Hz 8 times of rated speeds just) that the control rotating speed rises, and another is (I reach 5Hz 10% rated speed just) that the control rotating speed descends.Because rotating speed of motor obtained adjusting, (5) movement velocity also is under control thereby the machinery of the pump housing boosts part, and this makes from water tank (6) and pumps, and also is under control through the boost flow of water of part of machinery.Thereby reach the control of the control rate of rise.
In tectonic maps shown in Figure 2, the splash guard (7) of " S " type is installed on common hydraulic test pump, frequency variator (2) is installed in the splash guard (7), more whole device is welded on water tank (6) limit, straddle again on hydraulic test pump motor (4), and secure fixation.At last button panel (3) is installed in " S " type waterproof mounting plate (7) topmost, easy-to-operat.
Claims (1)
1. the utility model is a kind of adjustable flow hydraulic test pump, be characterized on common hydraulic test pump water tank, installing " S " shaped steel system splash guard (7), and in " S " cavity frequency variator (2) is installed at an upper portion thereof, top control knob plate (3) is installed at " S " plate top, it then is directly to introduce frequency variator (2) by three phase mains directly to insert hydraulic test pump motor (4) by the output of frequency variator again that its circuit connects, and complete machine control then is the hydraulic test pump that is directly connected top control knob plate (3) by frequency variator (2) internal control port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201888433U CN201635981U (en) | 2009-09-02 | 2009-09-02 | Hydraulic test pump with adjustable flow rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201888433U CN201635981U (en) | 2009-09-02 | 2009-09-02 | Hydraulic test pump with adjustable flow rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201635981U true CN201635981U (en) | 2010-11-17 |
Family
ID=43080471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201888433U Expired - Fee Related CN201635981U (en) | 2009-09-02 | 2009-09-02 | Hydraulic test pump with adjustable flow rate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201635981U (en) |
-
2009
- 2009-09-02 CN CN2009201888433U patent/CN201635981U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20180902 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |