Rotary steering hydraulic system solenoid valve block test method
The present invention relates to oil drillings and well logging field, especially relate to rotary steering technology.In particular, of the invention
It is related to a kind of rotary steering hydraulic system solenoid valve block test method.
When rotary steering down hole tool system is in underground work, underground bolt special drives rotary steering by universal shaft
Head transmission shaft high-speed rotation, the generator being attached on transmission shaft and hydraulic pump are started to work, and provide electric power to rotary steering head
And hydraulic power, the real-time acquisition system attitude parameter of TT&C system, control circuit export control according to real-time attitude parameter in real time
Instruction, solenoid valve receive the instruction from control circuit, and control guiding rib sequence is paid, and realize the backup to the wellbore borehole wall,
Drill bit is set to generate lateral force, to realize deflecting.
In rotary steering system, stretched out by the movement of solenoid valve block effectively to control rib, electromagnetism valve events are just
True property and reliability are most important for entire rotary steering system, therefore, just seem extremely to the test of electromagnetism valve events
It is important, wherein to the response time consistency of each valve in the service life of each valve, the response time of valve and stability, valve group, letting out
The detection of pressure valve reliability, oil circuit smoothness is necessary.
A kind of currently known solenoid valve detection method is examined using water, i.e., certain gas pressure is given in solenoid valve,
It is then placed in water, can be bubbled if gas leakage, to achieve the purpose that detection sealing.Using water inspection method to solenoid valve
Can be carried out test there are the shortcomings that mainly this method can only detect a kind of state of the solenoid valve under air pressure, can not detect in height
Whether can be operated when under low-pressure state and incidentally loading it is normal, in addition, being also easy to be secondarily contaminated solenoid valve using water inspection.
Well known another solenoid valve test method is exactly that directly power supply, power switch are connected with solenoid valve to be measured, control
The closing or opening of power switch processed, to realize the test to solenoid valve to be measured to solenoid valve output services voltage to be measured.The survey
It, can not be simultaneously to the consistency of the response of multiple solenoid valves although method for testing can realize the performance test to single solenoid valve
It is tested with stability.In addition, above two solenoid valve detection method can not be in the smoothness and system for designing oil circuit
Relief valve reliability is tested.
Summary of the invention
In response to the problems existing in the prior art, the purpose of the present invention is to provide a kind of rotary steering hydraulic system solenoid valve blocks
Test method, the response time for each valve in the response time in service life, valve to single valve and stability, valve group are consistent
Property, relief valve reliability, oil circuit smoothness are detected.
The technical scheme is that
Solenoid valve block is fixed in solenoid valve block test device, test device includes: hydraulic pump (1), pressure sensing
Device (2), relief valve (3), solenoid valve (4), temperature sensor (5), control system (6), data collection system (7) and host computer
(8)；Generating control sequential by control system makes single valve be in discontinuity working condition, to the sound in service life of single valve, valve
Between seasonable and stability is detected；Generating control sequential by control system makes each valve in valve group successively be in work shape
State detects the response time consistency of valve each in valve group；Generating control sequential by control system makes in valve group respectively
A valve is in close state, and is continued for some time, and is detected to relief valve reliability；By setting relief valve secure threshold,
The pressure in entire oil circuit is monitored, hydraulic system oil circuit smoothness is detected.
Whether the life detecting method of single valve as described above, mainly met by the stable work time of detection valve
Whether the temperature rise of need of work and valve is more than the permitted maximum value of valve.
The stable work time of valve as described above is at least 300 hours, and the temperature rise of valve is no more than 200 DEG C.
The response time of valve as described above and Detection of Stability method, response time are by comparison control sequential and pressure
Force snesor indicating value curve obtains, and the stability of response valve time is sentenced by the distribution curve for analyzing the response time of valve
It is disconnected.
The stability of response valve time as described above must satisfy the error that response valve time measured value is maintained at ± 4%
The response time consistency detecting method of each valve, refers to each in comparative analysis valve group in valve group as described above
The response time of valve and stability choose the preferable valve of consistency.
The response time consistency of each valve refers to that each response valve time absolute value of the difference exists in valve group as described above
Relief valve reliability checking method as described above refers to what analysis relief valve setting value and pressure sensor were shown
Indicating value distribution curve when pressure is stablized, to determine the reliability of relief valve.
It is further: to set relief valve pressure value as 5MPa, the hydraulic pump maximum pump pressure used is 20MPa, in pipeline just
Beginning oil pressure is 0MPa, starts hydraulic pump, and the oil pressure in pipeline rises, and host computer acquires pressure sensor by data collection system
Data oil pressure is monitored, when oil pressure is more than 5MPa, relief valve can be opened, so that the oil pressure in pipeline is maintained at 5MPa, when
Oil pressure in pipeline stablize 5MPa after a certain period of time, host computer runs solenoid valve block and controls program, and control system is according to timing
The on-off of solenoid valve and duration in solenoid valve block are controlled, makes corresponding solenoid valve start to act, to make the oil in pipeline
Pressure decline rapidly carries out cycle detection to entire solenoid valve block according to control program.
Rotary steering hydraulic system solenoid valve block test method of the present invention, which has the beneficial effect that, passes through control
System processed, which generates control sequential, makes single valve be in discontinuity working condition, to the service life of single valve, response time of valve and surely
It is qualitative to be detected；Generating control sequential by control system keeps each valve in valve group successively in running order, in valve group
The response time consistency of each valve is detected；Generating control sequential by control system makes each valve in valve group be in closing
State continues for some time, and detects to relief valve reliability；By setting relief valve secure threshold, entire oil circuit is monitored
In pressure, hydraulic system oil circuit smoothness is detected.Compared with prior art, the test method is to single solenoid valve
, it can be achieved that solenoid valve block performance test while test, while the smoothness of relief valve and oil circuit can be detected.
Detailed description of the invention:
Fig. 1 is a kind of structural representation of rotary steering hydraulic system solenoid valve block test device provided in an embodiment of the present invention
Fig. 2 is the resonse characteristic of single valve.
Fig. 3 is single valve temperature rise curve.
Fig. 4 is response time and the stability test result of valve.
Fig. 5 is the response time uniformity test result of each valve in valve group.
Fig. 6 is relief valve reliability test result.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
As shown in Figure 1, the solenoid valve block test device include hydraulic pump 1, pressure sensor 2, relief valve 3, solenoid valve 4,
Temperature sensor 5, control system 6, data collection system 7 and host computer (8).Hydraulic pump is used to provide pump pressure to entire oil circuit；
Pressure sensor is for being monitored the pump pressure of entire oil circuit；Relief valve is used to control entire oil circuit pump pressure in setting value,
To guarantee the safety of whole system；Temperature sensor is for being monitored the temperature rise of valve each in valve group；Control system is logical
The solenoid valve block control sequential realization for crossing host computer orderly controls solenoid valve block；Data collection system passes collected pressure
Sensor and temperature sensor signal are transferred to host computer；Host computer passes through acquisition pressure sensor, temperature sensor and valve group control
Timing processed is monitored the working condition of solenoid valve block.
Generating control sequential by control system makes single valve be in discontinuity working condition, the service life, valve to single valve
Response time and stability detected；
Generating control sequential by control system keeps each valve in valve group successively in running order, to valve each in valve group
Response time consistency detected；
Generating control sequential by control system is in close state each valve in valve group, continues for some time, to letting out
Pressure valve reliability is detected；
By setting relief valve secure threshold, the pressure in entire oil circuit is monitored, hydraulic system oil circuit smoothness is carried out
Whether the life detecting method of the single valve mainly meets work by the stable work time of detection valve
Need whether the temperature rise with valve is more than the permitted maximum value of valve.
Further, according to solenoid valve backup rotary steering rib power needs, being normally set up relief valve pressure value is 5MPa,
The maximum pump pressure that the hydraulic pump used is capable of providing is 20MPa, and original oil pressure is 0MPa in pipeline, starts hydraulic pump, in pipeline
Oil pressure can rise, host computer by data collection system acquire pressure sensor data oil pressure can be monitored, when
Oil pressure is more than 5MPa, and relief valve can be opened, and the oil pressure in pipeline is made to be maintained at 5MPa, when the oil pressure in pipeline is stablized in 5MPa mono-
After fixing time, host computer runs solenoid valve block and controls program, control system according in timing control solenoid valve block solenoid valve it is logical
The disconnected and duration, corresponding solenoid valve is made to start to act, to make the oil pressure in pipeline decline rapidly, according to control program pair
Entire solenoid valve block carries out cycle detection.
Fig. 2 is the resonse characteristic of single valve.As shown in Fig. 2, solid line is control sequential, dotted line is that electromagnetism response valve is special
Linearity curve, wherein Fig. 2 (a) is the resonse characteristic of valve when starting, and Fig. 2 (b) is the resonse characteristic of valve after 150 hours,
Fig. 2 (c) is the resonse characteristic of valve after 300 hours.By comparing Fig. 2 (a)-Fig. 2 (c) it can be found that solenoid valve is continuing
After work 300 hours, resonse characteristic is consistent substantially, illustrates that the continuous normal working hours of solenoid valve meets practical work
Fig. 3 is single valve temperature rise curve.As shown in figure 3, in voltage 34V, electric current 0.74A, duration 400min, valve body
The temperature rise of temperature rises to 78 DEG C from 15 DEG C of room temperature, it can be seen that temperature increases increase with time, finally reaches stabilization.
Further, the stable work time of general valve is at least 300 hours, and the temperature rise of valve is no more than 200 DEG C, passes through Fig. 2
It is analyzed with Fig. 3, whether the stable work time for detecting valve meets whether need of work and the temperature rise of valve are more than that valve is permitted most
Big value, and then can realize the detection in the service life to single valve.
Fig. 4 is response time and the stability test result of valve.As shown in figure 4, curve point represents the sound of single valve in figure
It is between seasonable as a result, pass through on-off 300 times of control sequential control valve, the response time of solenoid valve is successively recorded, through statistical
Analysis, average response time 6.22ms, according to the error requirements of solenoid valve measured value ± 4%, lower limit 5.97ms, the upper limit is
All response time data points of 6.47ms, test are all fallen between upper and lower bound.In summary it analyzes, it can be seen that electromagnetism
The response time stability of valve is met the requirements.
Fig. 5 is the response time uniformity test result of each valve in valve group.As shown in figure 5, the response time of solenoid valve 1
For 6.21ms, the response time of solenoid valve 2 is 6.26ms, and the response time of solenoid valve 3 is 6.19ms, when meeting each response valve
Between requirement of the absolute value of the difference within 0.1ms, and three solenoid valve curves are of similar shape, and consistency is preferable.
Fig. 6 is relief valve reliability test result.As shown in fig. 6, the pressure by repeatedly test, when detection oil circuit is stablized
Value remains at relief valve setting value, illustrates relief valve reliability with higher.