CN209671299U - A kind of hydraulic inlet valve of pipe robot - Google Patents
A kind of hydraulic inlet valve of pipe robot Download PDFInfo
- Publication number
- CN209671299U CN209671299U CN201920047635.5U CN201920047635U CN209671299U CN 209671299 U CN209671299 U CN 209671299U CN 201920047635 U CN201920047635 U CN 201920047635U CN 209671299 U CN209671299 U CN 209671299U
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- China
- Prior art keywords
- valve
- spring
- inlet valve
- spool
- valve body
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- Expired - Fee Related
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Abstract
The hydraulic inlet valve of a kind of pipe robot disclosed by the utility model, including instrumentation tubes, work pipe range are equipped with spring and valve body, are equipped with spool in valve body, spring can push spool to move in valve body to the valve pool being square is offered in valve pool.By being used cooperatively for pre-loading screw and spring, so that the valve folding of inlet valve closes on pressure；When the pressure of the extraneous hydraulic system of inlet valve connection reduces, the pressure that the spool of corresponding inlet valve adjusts mouth K reduces, spring reset, and oil inlet is plugged closing, and hydraulic system stops feed liquor；When the pressure of inlet valve is more than the maximum pressure of itself carrying, spring is pressurized, and the oil inlet P of inlet valve is opened, and hydraulic system drain pressure release is realized and carries out under-voltage and overvoltage protection to hydraulic system, guarantees that working solution has service pressure in hydraulic system.
Description
Technical field
The utility model belongs to pipeline hydraulic equipment technical field, and in particular to a kind of hydraulic inlet valve of pipe robot.
Background technique
Pipeline inside processing generallys use several threaded work pipe nipples of tool and is connected, and forms hydraulic system, protrudes into later
Operation is carried out inside pipeline.It wherein, is the inside service pressure for guaranteeing hydraulic device, hydraulic system should be filled in feed liquor
There is inlet valve, over-voltage and under-voltage protection are carried out to hydraulic system.And in face of the limitation of the special construction of pipeline and internal complicated work
Make environment, is difficult to meet job requirement as inlet valve using existing hydraulic valve.
Since the slim-lined construction and diameter of pipeline limit, existing hydraulic valve arrangement is difficult to enter pipeline with helicoid hydraulic motor.
Meanwhile in pipeline when operation, the case where hydraulic device often faces high temperature or high pressure, such as the high temperature in steel mill chimney breast
Environment, the hyperbaric environment in natural gas line；And in high temperature and pressure, hydraulic valve Each part can deform；Example
Such as the safety valve of cylindroid helical-coil compression spring, cylindrical helical compression spring can not provide enough pressures under high-pressure situations
Power can deform and change in the case of a high temperature the preset threshold pressure of safety valve, lose its basic guarantor as inlet valve
Shield effect.
It is remote that the working solution of pipe robot hydraulic system transports distance in pipeline, and oil circuit design is complicated, therefore working solution
Pumping pressure is big, and flow velocity is fast, when the working solution of high flow rate acts on the spool of hydraulic valve can biggish hydraulic power, common liquid
The design structure for being pressed into oil valve is difficult to normal movement in hydraulic power effect bottom spool, influences the folding of oil inlet valve.
Utility model content
The purpose of this utility model is to provide a kind of hydraulic inlet valves of pipe robot, can adapt under complex environment
Pipeline, and it is high temperature resistant, high pressure resistant.
The technical scheme adopted by the utility model is a kind of hydraulic inlet valve of pipe robot, including instrumentation tubes, work
Pipe range is equipped with spring and valve body, is equipped with spool in valve body, spring can push valve to the valve pool being square is offered in valve pool
Core moves in valve body；The surface of instrumentation tubes offers valve body communication port.
The utility model is also characterized by
Spool is equipped with groove；Valve body is equipped with stop screw, which is able to enter in groove.
Instrumentation tubes are equipped with pre-loading screw, and the pre-loading screw is connect with spring.
The first block is equipped between spring and pre-loading screw.
Voussoir has been bolted in the both ends of valve body, and the end face of voussoir is matched with the end face of valve body.
The second block is equipped between spring and valve body,
Second block offers first through hole；
Spool offers L-type through-hole close to the end of spring；
Voussoir close to spring is equipped with the second through-hole；
Third through-hole is offered in instrumentation tubes；The top of spring is arranged in the third through-hole；
First through hole, L-type through-hole, the second through-hole and third through-hole are interconnected.
Spool is equipped with the plunger of protrusion.
The quantity of plunger is no less than a, is in saddle type between each plunger.
The side of instrumentation tubes, which offers, adjusts mouth K, actuator port A, oil inlet P, unloading port T, and adjusts mouth K, working oil
Mouth A, oil inlet P, unloading port T are connected with valve body；Oil inlet P is communicated with control port K, and actuator port A and unloading port T connect
It is logical.
Spool is equipped with sealing block far from the end of spring.
The beneficial effects of the utility model are: a kind of hydraulic inlet valve of pipe robot of the utility model, passes through preload
Screw and spring are used cooperatively, so that the valve folding of inlet valve closes on pressure；When the extraneous hydraulic system of inlet valve connection
Pressure when reducing, the pressure that the spool of corresponding inlet valve adjusts mouth K reduces, and spring reset, oil inlet is plugged closing, liquid
Pressure system stops feed liquor；When the pressure of inlet valve is more than the maximum pressure of itself carrying, spring is pressurized, the oil inlet of inlet valve
P is opened, hydraulic system drain pressure release, is realized and is carried out under-voltage and overvoltage protection to hydraulic system, guarantees working solution in hydraulic system
Has service pressure.The plunger of spool setting can be improved the job stability and reliability of inlet valve, and each plunger is set
The influence of steady-state fluid force can be reduced by being calculated as saddle type.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the hydraulic inlet valve of pipe robot of the utility model；
Fig. 2 is a kind of vertical view partial structural diagram of the hydraulic inlet valve of pipe robot of the utility model；
Fig. 3 is a kind of valve core structure schematic diagram of the hydraulic inlet valve of pipe robot of the utility model；
Station figure when Fig. 4 is a kind of hydraulic inlet valve of pipe robot of the utility model non-feed liquor；
Station figure when Fig. 5 is a kind of pipe robot of the utility model hydraulic inlet valve feed liquor；
Station figure when Fig. 6 is a kind of hydraulic inlet valve overflow of pipe robot of the utility model.
In figure, 1. instrumentation tubes, 2. valve seats, 3. valve bodies, 4. spools, 4-1. plunger, 4-2. groove, 5. springs, 6. pre-tighten spiral shell
Nail, 7. first blocks, 8. second blocks, 9. first through hole, 10.L type through-hole, 11. second through-holes, 12. third through-holes, 13. limits
Position screw, 14. voussoirs, 15. valve body communication ports, 16. sealing rings, 17. sealing blocks.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and detailed description.
The utility model provides a kind of hydraulic inlet valve of pipe robot, as shown in Figure 1, including instrumentation tubes 1, instrumentation tubes
1 is long to the valve pool 2 being square is offered, and spring 5 and valve body 3 are equipped in valve pool 2, is equipped with spool 4 in valve body 3, spring 5 can
Spool 4 is pushed to move in valve body 3.
Valve body 3 is trapezoidal, and the both ends of valve body 3 have been bolted voussoir 14, and the end face of voussoir 14 is trapezoidal with valve body 3
End face matches；Voussoir 14 can prevent valve body 3 from moving on valve seat 5.
Instrumentation tubes 1 are equipped with pre-loading screw 6 and connect with spring 5, and pre-loading screw 6 is used for the pretightning force of adjustment spring 5.
The first block 7 is equipped between spring 5 and pre-loading screw 6, which is pushed by pre-loading screw 6 and pre-tighten bullet
Spring 5.
The second block 8 is equipped between spring 5 and valve body 3, the second block 8 offers first through hole 9；
As shown in Fig. 2, spool 4 offers L-type through-hole 10 close to the end of spring 5；
Voussoir 14 close to spring 5 is equipped with the second through-hole 11；
Third through-hole 12 is offered in instrumentation tubes 1；The top of spring 5 is arranged in the third through-hole 12；
First through hole 9, L-type through-hole 10, the second through-hole 11 is interconnected with third through-hole 12, to be in communication with the outside；When
When the external and internal pressure imbalance of hydraulic valve, first through hole 9, L-type through-hole 10, the second through-hole 11 is connected to third through-hole 12, prevents
Spring 5 is influenced by hydraulic pressure, the only effect by 4 thrust of spool in compression process.
As shown in figure 3, spool 4 is equipped with the plunger 4-1 of protrusion, the peripheral surface of plunger 4-1 is equipped with second annular groove,
The second annular groove is to reduce influence of the liquid radial force to oil inlet valve performance.
The quantity of plunger 4-1 is no less than 3, and the connection between each plunger 4-1 of spool 4 is in saddle type；Therefore spool 4 with
Saddle type hydraulic cavities are formed between valve body 3, which is convenient for the disengaging of high pressure high flow rate liquid.
Spool 4 is equipped with groove 4-2；As shown in Fig. 2, the intermediate position of valve body 3 uses spanwise configurations, valve body 3 wears limited
Position screw 13；The stop screw 13 is able to enter in groove 4-2, and is cooperated with groove 4-2, the position for limiting valve body 3.
As shown in Figure 1, the side of instrumentation tubes 1, which offers spool, adjusts mouth K, actuator port A, oil inlet P, unloading port T, and
Spool adjusts mouth K, actuator port A, oil inlet P, unloading port T and is connected with valve body 3；Wherein oil inlet P and control port K phase
Logical, actuator port A is connected to unloading port T.
Spool adjusts and is equipped with sealing ring 16 at mouth K, actuator port A, oil inlet P, unloading port T and the communication port of valve body 3.
Filter screen is equipped at unloading port T, which is used to filter the impurity of well liquid.
Another side surface of instrumentation tubes 1 offers valve body communication port 15.
Spool 4 is equipped with sealing block 17 far from the end of spring 5.
Spring 5 uses disc spring.
The utility model provides a kind of workflow of hydraulic inlet valve of pipe robot:
When hydraulic pump continues to P mouthful pump liquid pump liquids of oil inlet, as shown in figure 4, spool adjusting mouth K pressure increase, spool 4 by
Pressure is close to spring 5, and compressed spring 5；When the pressure that spool adjusts mouth K reaches inlet valve design value, oil inlet P and work
Make hydraulic fluid port A connection, actuator port A and drain tap T are communicated, and drain tap T is blocked by spool 4, and the working solution in oil inlet P passes through
Actuator port A enters inside subsequent hydraulic system, and working at the same time liquid will not outflow, and inlet valve is opened at this time, works normally.
When pressure reduces in the hydraulic system of inlet valve external world connection, spool adjusts mouth K pressure and decreases, and spring 5 exists
It resets and pushes spool 4 under pressure, for spool 4 to away from the movement of the side of spring 5, the commutation station of inlet valve switchs to Fig. 5 institute by Fig. 4
Show, oil inlet P is blocked by spool 4 at this time, and actuator port A is in communication with the outside, at this point, working solution does not enter hydraulic system, is avoided
The failures such as leakage occur for hydraulic system, play the role of under-voltage, stop feed flow, realize under-voltage protection to inlet valve.
When breaking down in hydraulic system, oil inlet P continues feed liquor, and hydraulic system internal pressure increases, such as Fig. 6 institute
Showing, spool, which adjusts mouth K pressure, to be continued to increase, and spool 4 continues to the movement of spring 5, and compressed spring 5, at this point, spool 4 is mobile, into
Hydraulic fluid port P is blocked by spool 4, the hydraulic system of actuator port A no longer feed liquor；Actuator port A is connected to drain tap T, unloading port T with
Communication port 10 is connected to；Working solution in the hydraulic system of actuator port A connection passes through work through actuator port A and drain tap T
Valve body communication port 15 on pipe 1 flows to the external world, realizes pressure release, plays overflow protective effect.
By the above-mentioned means, a kind of hydraulic inlet valve of pipe robot of the utility model, passes through pre-loading screw 6 and spring
5 are used cooperatively, so that the valve folding of inlet valve closes on pressure；When the pressure of the extraneous hydraulic system of inlet valve connection reduces
When, the pressure that the spool of corresponding inlet valve adjusts mouth K reduces, and spring 5 resets, and oil inlet is plugged closing, and hydraulic system is stopped
Only feed liquor；When the pressure of inlet valve is more than the maximum pressure of itself carrying, spring 5 is pressurized, and the oil inlet P of inlet valve is opened,
Hydraulic system drain pressure release is realized and carries out under-voltage and overvoltage protection to hydraulic system, guarantees that working solution has just in hydraulic system
Normal operating pressure.The plunger 4-1 that spool 4 is arranged can be improved the job stability and reliability of inlet valve, and each plunger 4-1 is set
The influence of steady-state fluid force can be reduced by being calculated as saddle type.
Claims (10)
1. a kind of hydraulic inlet valve of pipe robot, which is characterized in that including instrumentation tubes (1), the long Xiang Kaishe of the instrumentation tubes (1)
There is the valve pool (2) being square, spring (5) and valve body (3) are equipped in the valve pool (2), spool is installed in the valve body (3)
(4), the spring (5) can push the spool (4) to move in the valve body (3)；The surface of the instrumentation tubes (1) opens up
There are valve body communication port (15).
2. a kind of hydraulic inlet valve of pipe robot as described in claim 1, which is characterized in that the spool (4) is equipped with
Groove (4-2)；The valve body (3) is equipped with stop screw (13), which is able to enter the groove (4-2)
It is interior.
3. a kind of hydraulic inlet valve of pipe robot as described in claim 1, which is characterized in that the instrumentation tubes (1) wear
Have pre-loading screw (6), and the pre-loading screw (6) is connect with the spring (5).
4. a kind of hydraulic inlet valve of pipe robot as claimed in claim 3, which is characterized in that the spring (5) with it is described
The first block (7) are equipped between pre-loading screw (6).
5. a kind of hydraulic inlet valve of pipe robot as claimed in claim 2, which is characterized in that the both ends of the valve body (3)
It has been bolted voussoir (14), the end face of voussoir (14) is matched with the end face of valve body (3).
6. a kind of hydraulic inlet valve of pipe robot as claimed in claim 5, which is characterized in that the spring (5) with it is described
The second block (8) are equipped between valve body (3),
Second block (8) offers first through hole (9)；
The spool (4) offers L-type through-hole (10) close to the end of the spring (5)；
The voussoir (14) close to the spring (5) is equipped with the second through-hole (11)；
Third through-hole (12) are offered on the instrumentation tubes (1)；The third through-hole (12) is arranged on the top of the spring (5)；
The first through hole (9), the L-type through-hole (10), second through-hole (11) and the third through-hole (12) mutually interconnect
It is logical.
7. a kind of hydraulic inlet valve of pipe robot as described in claim 1, which is characterized in that the spool (4) is equipped with
The plunger (4-1) of protrusion.
8. a kind of hydraulic inlet valve of pipe robot as claimed in claim 7, which is characterized in that the number of the plunger (4-1)
Amount is no less than 3, is in saddle type between each plunger (4-1).
9. the hydraulic inlet valve of a kind of pipe robot as claimed in claim 1 or 3, which is characterized in that the instrumentation tubes (1)
Side, which offers, adjusts mouth K, actuator port A, oil inlet P, unloading port T, and adjusts mouth K, actuator port A, oil inlet P, emptying
Mouth T is connected with valve body (3)；Oil inlet P is communicated with control port K, and actuator port A is connected to unloading port T.
10. the hydraulic inlet valve of a kind of pipe robot as described in claims 1 or 2 or 5 or 6 or 7 or 8, which is characterized in that institute
It states spool (4) and is equipped with sealing block (17) far from the end of the spring (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920047635.5U CN209671299U (en) | 2019-01-11 | 2019-01-11 | A kind of hydraulic inlet valve of pipe robot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920047635.5U CN209671299U (en) | 2019-01-11 | 2019-01-11 | A kind of hydraulic inlet valve of pipe robot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209671299U true CN209671299U (en) | 2019-11-22 |
Family
ID=68565361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920047635.5U Expired - Fee Related CN209671299U (en) | 2019-01-11 | 2019-01-11 | A kind of hydraulic inlet valve of pipe robot |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209671299U (en) |
-
2019
- 2019-01-11 CN CN201920047635.5U patent/CN209671299U/en not_active Expired - Fee Related
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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: 20191122 Termination date: 20210111 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |