CN213064110U - Multi-load flow distribution device, hydraulic station and well drilling and repairing machine - Google Patents
Multi-load flow distribution device, hydraulic station and well drilling and repairing machine Download PDFInfo
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- CN213064110U CN213064110U CN202021259644.XU CN202021259644U CN213064110U CN 213064110 U CN213064110 U CN 213064110U CN 202021259644 U CN202021259644 U CN 202021259644U CN 213064110 U CN213064110 U CN 213064110U
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Abstract
The utility model relates to a fluid control equipment technical field especially relates to a many loads flow distributor, hydraulic pressure station and drilling and workover rig. The multi-load flow distribution device comprises a plurality of flow distribution valve groups which are communicated between the oil supply end and a plurality of load ends in a one-to-one correspondence manner; the flow distribution valve group comprises a fixed-differential pressure reducing valve and an adjustable throttle valve which are sequentially communicated between an oil supply end and a load end. The hydraulic station includes the multi-load flow distribution device. The well drilling and repairing machine comprises the hydraulic station. This many load flow distributor, hydraulic pressure station and drilling and workover rig through connect fixed difference pressure reducing valve and adjustable choke valve in order between oil feed end and every load end, can make a plurality of load ends realize the flow distribution linkage according to the demand of load end on the one hand to improve the matter and increase the efficiency, on the other hand simple structure has reduced the cost and the resource of hydraulic pressure station upgrading, and the suitability is strong.
Description
Technical Field
The utility model relates to a fluid control equipment technical field especially relates to a many loads flow distributor, hydraulic pressure station and drilling and workover rig.
Background
In the related art, with the increase of hydraulic machines and tools on a drilling floor, combined action becomes an important means for improving efficiency of equipment, the existing hydraulic station is difficult to realize distribution linkage of different flow rates of different load ends, the efficiency of the equipment is difficult to improve, the hydraulic station is either thoroughly upgraded or replaced with a new station, and undoubtedly, cost rise and resource waste are brought.
SUMMERY OF THE UTILITY MODEL
A first object of the utility model is to provide a many loads flow distributor to solve the technical problem that hydraulic pressure among the prior art can't make the flow distribution linkage according to different load ends to a certain extent.
A second object of the utility model is to provide a hydraulic pressure station to solve the technical problem that the hydraulic pressure station among the prior art can't make the linkage of flow distribution according to different load ends to a certain extent.
A third object of the present invention is to provide a drilling and workover rig to solve the technical problem that the hydraulic station in the prior art can't make the flow distribution linkage according to the work load end of different manipulators and tong to a certain extent.
In order to achieve the above object, the present invention provides the following technical solutions;
based on the first objective, the utility model provides a multi-load flow distribution device includes a plurality of flow distribution valve sets, a first insert valve and a second insert valve that are communicated between the oil supply end and the plurality of load ends in a one-to-one correspondence;
the flow distribution valve group comprises a fixed-difference pressure-reducing valve and an adjustable throttle valve which are sequentially communicated between the oil supply end and the load end,
the first insert valve and the second insert valve comprise inlets and outlets, the inlet of the first insert valve and the inlet of the second insert valve are communicated with the oil supply end, and the outlet of the first insert valve is communicated with the inlets of all the flow distribution valve groups;
one of the flow distribution valve blocks is a first flow distribution valve block, and the outlet of the second insert valve is communicated between the outlet of the first flow distribution valve block and the corresponding load end.
In any of the above technical solutions, optionally, the multi-load flow distribution device further includes a two-position four-way reversing valve, and the first insert valve and the second insert valve both include control ports;
when the two-position four-way reversing valve is switched to a first position, a first channel of the two-position four-way reversing valve is communicated with a control port of the first plug valve and the oil return end, and a second channel of the two-position four-way reversing valve is communicated with a control port of the second plug valve and the oil supply end, so that the first plug valve is opened and the second plug valve is closed;
when the two-position four-way reversing valve is switched to a second position, a third channel of the two-position four-way reversing valve is communicated with a control port of the second plug valve and the oil return end, and a fourth channel of the two-position four-way reversing valve is communicated with a control port of the first plug valve and the oil supply end, so that the second plug valve is opened and the first plug valve is closed.
In any of the above technical solutions, optionally, the multi-load flow distribution device further includes a plurality of first throttle valves, and the first throttle valves are disposed between the two-position four-way reversing valve and the first interposing valve and between the two-position four-way reversing valve and the second interposing valve.
In any of the above technical solutions, optionally, the multi-load flow distribution device further includes a check valve;
the check valve is arranged between the first flow distribution valve group and the second insert valve, and only allows oil to flow from the second insert valve to the load end corresponding to the first flow distribution valve group.
In any of the above technical solutions, optionally, the number of the flow distribution valve groups is two, and the two flow distribution valve groups are the first flow distribution valve group and the second flow distribution valve group respectively;
the multi-load flow distribution device further comprises a compensation valve group, two inlets of the compensation valve group are respectively communicated with an outlet of the first flow distribution valve group and an outlet of the second flow distribution valve group, and an outlet of the compensation valve group is communicated with the oil return end.
In any of the above technical solutions, optionally, the compensation valve group includes a three-way shuttle valve and a two-position two-way reversing valve;
a first inlet of the three-way shuttle valve is communicated with an outlet of the first flow distribution valve group, a second inlet of the three-way shuttle valve is communicated with an outlet of the second flow distribution valve group, and the two-position two-way reversing valve is connected between the outlet of the three-way shuttle valve and the oil return end;
when the two-position two-way reversing valve is switched to a first position, the two-position two-way reversing valve is communicated with the three-way shuttle valve and the oil return end through a fifth passage;
when the two-position two-way reversing valve is switched to a second position, the two-position two-way reversing valve disconnects the three-way shuttle valve from the oil return end through a sixth passage.
In any of the above technical solutions, optionally, the two-position four-way reversing valve and the two-position two-way reversing valve are electromagnetic reversing valves respectively;
the multi-load flow distribution device further comprises a second throttle valve communicated between the sixth passage and the oil return end.
Based on above-mentioned second purpose, the utility model provides a hydraulic pressure station includes the many load flow distributor that any technical scheme provided above provided.
Based on the third purpose, the utility model provides a drilling and workover rig includes manipulator, tong and the hydraulic pressure station that any one above-mentioned technical scheme provided;
the hydraulic station comprises two flow distribution valve groups, and outlets of the two flow distribution valve groups are respectively communicated with the manipulator and the tong.
Adopt above-mentioned technical scheme, the beneficial effects of the utility model are that:
the utility model provides a many loads flow distributor through connect fixed differential pressure reducing valve and adjustable throttle valve between fuel feeding end and every load end in order, can make a plurality of load ends realize the flow distribution linkage according to the demand of load end on the one hand to improve the matter and increase efficiency, on the other hand simple structure has reduced the cost and the resource of hydraulic pressure station upgrading, and the suitability is strong.
The utility model provides a hydraulic pressure station, including foretell many load flow distributor, therefore can realize all beneficial effects of this many load flow distributor.
The utility model provides a bore workover rig, including foretell hydraulic pressure station, therefore can realize all beneficial effects at this hydraulic pressure station.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a first structure of a multi-load flow distribution device according to an embodiment of the present invention;
fig. 2 is a second schematic structural diagram of a multi-load flow distribution device according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a third structure of a multi-load flow distribution device according to an embodiment of the present invention;
fig. 4 is a fourth schematic structural diagram of a multi-load flow distribution device according to an embodiment of the present invention;
fig. 5 is a fifth schematic structural diagram of a multi-load flow distribution device according to an embodiment of the present invention.
Icon: 1-a multi-load flow distribution device; 10-oil return end; 11-oil supply end; 110 — a first load side; 111-a second load terminal; 12-a first flow distribution valve block; 120-a first differential relief valve; 121-a first adjustable throttle valve; 13-a first insert valve; 130-inlet of first insert valve; 131-the outlet of the first insert valve; 132 — a control port of the first plug valve; 14-a second insert valve; 140-inlet of second insert valve; 141-outlet of the second insert valve; 142-a control port of a second spigot; 15-a two-position four-way reversing valve; 16-a one-way valve; 17-a compensation valve group; 170-three-way shuttle valve; 171-two-position two-way directional valve; 172-second throttle valve; 18-a second flow distribution valve group; 180-a second fixed-differential pressure relief valve; 181-a second adjustable throttle valve; 19-first throttle valve.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
The multi-load flow distribution device provided by the embodiment is used for the hydraulic station.
Referring to fig. 1 to 5, the multi-load flow rate distribution device 1 provided in the present embodiment includes a plurality of flow rate distribution valve sets that are communicated between the oil supply end 11 and the plurality of load ends in a one-to-one correspondence manner.
The flow distribution valve group comprises a fixed-difference pressure-reducing valve and an adjustable throttle valve which are sequentially communicated between the oil supply end 11 and the load end. The constant-differential pressure reducing valve can ensure that the pressure difference between the front and the back of the adjustable throttle valve is not changed, the adjustable throttle valve corresponding to each load end is adjusted, the flow of the oil supply end 11 conveyed to each load end can be changed, the effect of distributing the flow from the oil supply end 11 according to the load ends is achieved, and the accurate flow distribution effect on the flow is achieved.
Optionally, the adjustable throttle valve is variable damping, such that the fixed differential pressure relief valve and the adjustable throttle valve are conveniently integrated to form a flow distribution valve bank assembly.
The multi-load flow distribution device 1 in the embodiment has the advantages that the constant-differential pressure reducing valve and the adjustable throttle valve are sequentially connected between the oil supply end 11 and each load end, on one hand, the flow distribution linkage of the plurality of load ends can be achieved according to the requirements of the load ends, so that the quality and the efficiency are improved, on the other hand, the structure is simple, the upgrading cost and the upgrading resource of a hydraulic station are reduced, and the applicability is high.
In an alternative of this embodiment, the multi load flow distributing device 1 further comprises a first insert valve 13 and a second insert valve 14.
The inlet 130 of the first insert valve and the inlet 140 of the second insert valve are both communicated with the oil supply end 11, and the outlet 131 of the first insert valve is communicated with the inlets of all the flow distribution valve sets, so that when the first insert valve 13 is opened and the second insert valve 14 is closed, the oil supply end 11 can supply oil to each load end sequentially through the first insert valve 13 and the flow distribution valve sets, and then the flow distribution mode is entered.
One of the flow rate distribution valve groups is a first flow rate distribution valve group 12, an outlet 141 of the second insert valve is communicated between the outlet of the first flow rate distribution valve group 12 and a corresponding load end, and the load end corresponding to the first flow rate distribution valve group 12 is a first load end 110, that is, the outlet 141 of the second insert valve is not directly connected with the first load end 110 through the first flow rate distribution valve group 12. When the second insert valve 14 is opened and the first insert valve 13 is closed, the oil supply end 11 supplies oil to the first load end 110 through the second insert valve 14, and the oil supply end 11 is disconnected from all the flow distribution valve sets through the second insert valve 14, so that the single load mode is entered.
The multi-load flow rate distribution device 1 is provided with the first insertion valve 13 and the second insertion valve 14, and can switch between the flow rate distribution mode and the single load mode by controlling the on/off of the first insertion valve 13 and the second insertion valve 14.
In an alternative of this embodiment, the multi-load flow distribution device 1 further comprises a two-position, four-way reversing valve 15.
Referring to fig. 1, 3 and 4, when the two-position four-way reversing valve 15 is switched to the first position, the first passage of the two-position four-way reversing valve 15 communicates with the control port 132 and the oil return port 10 of the first spool, and the second passage of the two-position four-way reversing valve 15 communicates with the control port 142 and the oil supply port 11 of the second spool, so that the pressure of the control port 142 of the second spool is greater than the pressure of the control port 132 of the first spool, and the pressure of the inlet 140 of the second spool is equal to the pressure of the inlet 130 of the first spool, so that the first spool 13 can be opened and the second spool 14 can be closed, and the multi-load flow distribution device 1 can operate in a flow distribution mode.
Referring to fig. 2 and 5, when the two-position four-way reversing valve 15 is switched to the second position, the third channel of the two-position four-way reversing valve 15 communicates with the control port 142 of the second spool and the oil return port 10, and the fourth channel of the two-position four-way reversing valve 15 communicates with the control port 132 of the first spool and the oil supply port 11, so that the pressure of the control port 142 of the second spool is smaller than the pressure of the control port 132 of the first spool, and the pressure of the inlet 140 of the second spool is equal to the pressure of the inlet 130 of the first spool, so that the second spool 14 can be opened and the first spool 13 can be closed, and the multi-load flow distribution device 1 can operate in a single-load mode.
The existing hydraulic station is difficult to complete multi-action linkage and only can perform single action, and the field modification for dealing with linkage requirements is generally solved by additionally installing a proportional multi-way valve or adding a hydraulic station or a power assembly, so that the cost is increased and the difficulty of operation control is increased. Compared with the existing hydraulic station, the hydraulic station applying the multi-load flow distribution device 1 can control the first insertion valve 13 and the second insertion valve 14 to be selectively opened by controlling the two-position four-way reversing valve 15 to reverse, so that the first insertion valve 13 and the second insertion valve 14 are opened and closed in a linkage manner, the flow distribution mode and the single load mode are conveniently switched, and the on-site transformation cost and difficulty are reduced.
In an alternative of the present embodiment, referring to fig. 1 to 5, the multi-load flow distribution device 1 further includes a plurality of first throttle valves 19, and the first throttle valves 19 are disposed between the two-position four-way selector valve 15 and the first insertion valve 13 and between the two-position four-way selector valve 15 and the second insertion valve 14. In other words, the control port 132 of the first spool and the control port 142 of the second spool both communicate with the valve port of the two-position, four-way selector valve 15 through the first throttle valve 19. By arranging the first throttle valve 19, a return channel is provided for the pre-tightening cavities of the first insertion valve 13 and the second insertion valve 14, which is beneficial to ensuring that the first insertion valve 13 or the second insertion valve 14 is smoothly opened.
In an alternative to this embodiment, the multi-load flow distributing device 1 further comprises a non-return valve 16, see fig. 2 and 5. The check valve 16 is disposed between the first flow distribution valve set 12 and the second insert valve 14, and the check valve 16 only allows the oil to flow from the second insert valve 14 to the load end corresponding to the first flow distribution valve set 12, that is, only allows the oil to flow from the second insert valve 14 to the first load end 110 and does not allow the oil to flow to the first flow distribution valve set 12. The oil backflow is prevented by the check valve 16, thereby improving the safety of the single load mode.
In an alternative of this embodiment, the number of flow distribution valve blocks is two, and the two flow distribution valve blocks are the first flow distribution valve block 12 and the second flow distribution valve block 18, respectively. The two load terminals are a first load terminal 110 and a second load terminal 111, respectively.
The multi-load flow distribution device 1 further includes a compensation valve set 17, as shown in fig. 3 to 5, two inlets of the compensation valve set 17 are respectively communicated with outlets of the first flow distribution valve set 12 and the second flow distribution valve set 18, and an outlet of the compensation valve set 17 is communicated with the oil return end 10. In the flow rate distribution mode, when the operation speed of the first load end 110 or the second load end 111 is slow, that is, in a state of working at a small flow rate, the excess flow rate can be discharged to the oil return end 10 through the compensation valve set 17, thereby playing a role in saving energy and reducing consumption.
In an alternative to this embodiment, the compensator valve block 17 includes a three-way shuttle valve 170 and a two-position two-way reversing valve 171. The first valve block 12 comprises a first fixed differential relief valve 120 and a first adjustable throttle valve 121, and the second valve block 18 comprises a second fixed differential relief valve 180 and a second adjustable throttle valve. 181.
The first inlet of the three-way shuttle valve 170 is communicated with the outlet of the first flow distribution valve set 12, the second inlet of the three-way shuttle valve 170 is communicated with the outlet of the second flow distribution valve set 18, that is, the excess flow of the first adjustable throttle valve 121 can be delivered to the outlet through the first inlet of the three-way shuttle valve 170, and the excess flow of the second adjustable throttle valve 181 can be delivered to the outlet through the second inlet of the three-way shuttle valve 170.
The two-position two-way reversing valve 171 is connected between the outlet of the three-way shuttle valve 170 and the oil return end 10; when the two-position two-way reversing valve 171 is switched to the first position, the two-position two-way reversing valve 171 is communicated with the three-way shuttle valve 170 and the oil return end 10 through a fifth passage, and is suitable for the working condition that any one of the first load end 110 or the second load end 111 works at a small flow rate, namely the working condition that the flow-adjustable valve has redundant flow rate; when the two-position two-way directional valve 171 is switched to the second position, the two-position two-way directional valve 171 disconnects the three-way shuttle valve 170 from the oil return end 10 through the sixth path, and is suitable for a working condition that neither the first load end 110 nor the second load end 111 works at a small flow rate, that is, no excess flow rate exists. The two-position two-way directional valve 171 plays a role in controlling whether the flow compensation function is started or not according to the magnitude of the working flow required by the load end.
Specifically, referring to fig. 3, a working condition that the second load end 111 operates at a small flow rate in the flow distribution mode is shown; referring to fig. 4, a working condition that the first load terminal 110 operates at a small flow rate in the flow distribution mode is shown; referring to fig. 5, a condition is shown where the first load is operating at a low flow rate in the single load mode.
In an alternative of this embodiment, the multi-load flow rate distribution device 1 further includes a second throttle valve 172 communicating between the sixth passage of the two-position, two-way selector valve 171 and the return end 10. By providing the second throttle 172, a return passage is provided for the residual oil in the valve, and the smoothness of switching the two-position two-way selector valve 171 from the second position to the first position can be ensured.
In an alternative of this embodiment, the two-position, four-way selector valve 15 and the two-position, two-way selector valve 171 are electromagnetic selector valves, respectively. By energizing or de-energizing the two-position, four-way directional valve 15 and the two-position, two-way directional valve 171, the two valves can be controlled to switch to the first position or the second position, respectively, thereby improving the control convenience of switching the multi-load flow distribution device 1 between various operating modes.
Example two
The second embodiment provides a hydraulic station, the second embodiment includes the multi-load flow distribution device in the first embodiment, the technical features of the multi-load flow distribution device disclosed in the first embodiment are also applicable to the second embodiment, and the technical features of the multi-load flow distribution device disclosed in the first embodiment are not described repeatedly.
Referring to fig. 1 to 5, the hydraulic station provided in this embodiment includes a multi-load flow rate distribution device 1 in the first embodiment.
Optionally, the hydraulic station further comprises a pumping device and an oil tank, the oil tank is communicated with the oil return end 10 of the multi-load flow distribution device 1, and the pumping device is communicated between the oil tank and the oil supply end 11 of the multi-load flow distribution device 1.
The hydraulic station in this embodiment has the advantages of the multi-load flow distribution device in the first embodiment, and the advantages of the multi-load flow distribution device disclosed in the first embodiment are not described repeatedly herein.
EXAMPLE III
The third embodiment provides a well drilling and repairing machine, the third embodiment comprises the hydraulic station in the second embodiment, the technical characteristics of the hydraulic station disclosed in the second embodiment are also applicable to the third embodiment, and the technical characteristics of the hydraulic station disclosed in the second embodiment are not repeatedly described.
In an alternative of this embodiment, the hydraulic station comprises a manipulator, a tong and the hydraulic station of the second embodiment.
The number of the flow distribution valve banks of the hydraulic station is two, and the manipulator and the tong are respectively communicated with outlets of the two flow distribution valve banks, so that the flow distribution linkage of the manipulator and the tong is realized.
The drilling and workover rig in the embodiment has the advantages of the hydraulic station in the second embodiment, and the advantages of the hydraulic station disclosed in the second embodiment are not described repeatedly.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention. Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, any of the claimed embodiments may be used in any combination. The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
Claims (9)
1. The multi-load flow distribution device is characterized by comprising a plurality of flow distribution valve groups, a first insert valve and a second insert valve, wherein the flow distribution valve groups, the first insert valve and the second insert valve are communicated between an oil supply end and a plurality of load ends in a one-to-one correspondence manner;
the flow distribution valve group comprises a fixed-difference pressure-reducing valve and an adjustable throttle valve which are sequentially communicated between the oil supply end and the load end,
the first insert valve and the second insert valve comprise inlets and outlets, the inlet of the first insert valve and the inlet of the second insert valve are communicated with the oil supply end, and the outlet of the first insert valve is communicated with the inlets of all the flow distribution valve groups;
one of the flow distribution valve blocks is a first flow distribution valve block, and the outlet of the second insert valve is communicated between the outlet of the first flow distribution valve block and the corresponding load end.
2. The multi-load flow distribution device of claim 1, further comprising a two-position, four-way reversing valve, wherein the first and second insert valves each comprise a control port; when the two-position four-way reversing valve is switched to a first position, a first channel of the two-position four-way reversing valve is communicated with a control port and an oil return end of the first plug valve, and a second channel of the two-position four-way reversing valve is communicated with a control port and an oil supply end of the second plug valve, so that the first plug valve is opened and the second plug valve is closed;
when the two-position four-way reversing valve is switched to a second position, a third channel of the two-position four-way reversing valve is communicated with a control port of the second plug valve and the oil return end, and a fourth channel of the two-position four-way reversing valve is communicated with a control port of the first plug valve and the oil supply end, so that the second plug valve is opened and the first plug valve is closed.
3. The multi-load flow distribution device of claim 2, further comprising a plurality of first throttling valves, the first throttling valves being disposed between the two-position, four-way reversing valve and the first interposing valve and between the two-position, four-way reversing valve and the second interposing valve.
4. The multi-load flow distribution device of claim 3, further comprising a one-way valve;
the check valve is arranged between the first flow distribution valve group and the second insert valve, and only allows oil to flow from the second insert valve to the load end corresponding to the first flow distribution valve group.
5. The multi-load flow distribution device of claim 4, wherein the number of said flow distribution valve banks is two, said two flow distribution valve banks being said first and second flow distribution valve banks, respectively;
the multi-load flow distribution device further comprises a compensation valve group, two inlets of the compensation valve group are respectively communicated with an outlet of the first flow distribution valve group and an outlet of the second flow distribution valve group, and an outlet of the compensation valve group is communicated with the oil return end.
6. The multi-load flow distribution device of claim 5, wherein the set of compensation valves includes a three-way shuttle valve and a two-position two-way reversing valve;
a first inlet of the three-way shuttle valve is communicated with an outlet of the first flow distribution valve group, a second inlet of the three-way shuttle valve is communicated with an outlet of the second flow distribution valve group, and the two-position two-way reversing valve is connected between the outlet of the three-way shuttle valve and the oil return end;
when the two-position two-way reversing valve is switched to a first position, the two-position two-way reversing valve is communicated with the three-way shuttle valve and the oil return end through a fifth passage;
when the two-position two-way reversing valve is switched to a second position, the two-position two-way reversing valve disconnects the three-way shuttle valve from the oil return end through a sixth passage.
7. The multi-load flow distribution device of claim 6, wherein the two-position, four-way reversing valve and the two-position, two-way reversing valve are each solenoid reversing valves;
the multi-load flow distribution device further comprises a second throttle valve communicated between the sixth passage and the oil return end.
8. A hydraulic station, characterized in that it comprises a multi-load flow distribution device according to any one of claims 1 to 7.
9. A well drilling and repairing machine, characterized by comprising a manipulator, a tong and the hydraulic station of claim 8;
the hydraulic station comprises two flow distribution valve groups, and outlets of the two flow distribution valve groups are respectively communicated with the manipulator and the tong.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021259644.XU CN213064110U (en) | 2020-06-30 | 2020-06-30 | Multi-load flow distribution device, hydraulic station and well drilling and repairing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021259644.XU CN213064110U (en) | 2020-06-30 | 2020-06-30 | Multi-load flow distribution device, hydraulic station and well drilling and repairing machine |
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| CN213064110U true CN213064110U (en) | 2021-04-27 |
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| CN202021259644.XU Active CN213064110U (en) | 2020-06-30 | 2020-06-30 | Multi-load flow distribution device, hydraulic station and well drilling and repairing machine |
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