CN201802328U - Hydraulic safety control system for hydraulic power tongs - Google Patents
Hydraulic safety control system for hydraulic power tongs Download PDFInfo
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- CN201802328U CN201802328U CN2010205227216U CN201020522721U CN201802328U CN 201802328 U CN201802328 U CN 201802328U CN 2010205227216 U CN2010205227216 U CN 2010205227216U CN 201020522721 U CN201020522721 U CN 201020522721U CN 201802328 U CN201802328 U CN 201802328U
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- valve
- oil
- hydraulic
- pressure
- relief valve
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Abstract
The utility model relates to a special hydraulic safety operation control system for hydraulic power tongs, which comprises a remote pressure relief valve, a remote control valve, an external connecting pipeline and the like. The remote pressure relief valve is externally connected with a hydraulic system of the hydraulic power tongs through two threaded connecting oil ports at the top end of the remote pressure relief valve, and is connected with two small threaded oil ports on the side surface of the remote control valve through two small threaded connection oil ports on the side surface of the remote pressure relief valve, thereby realizing connection between the hydraulic system of the hydraulic power tongs and a back-and-forth oil circuit of the remote pressure relief valve and connection between the remote pressure relief valve and a back-and-forth oil circuit of the remote control valve. The assembling position of the remote control valve corresponds to that of a safety door of the hydraulic power tongs, personal safety of operators during maintenance and replacement of parts such as jaw plates, toothed seats, tong teeth and the like can be guaranteed through switching of the safety door of the hydraulic power tongs, and accordingly injury accidents caused by inharmonious operation or misoperation of multiple operators are effectively avoided. In addition, the special hydraulic safety operation control system for the hydraulic power tongs is light in weight, small in volume, stable in hydraulic transmission, convenient in operation, integral in combination, safe and reliable in operation and fine in applicability.
Description
Technical field
The utility model relates to the hydraulic power tongs that bore in the oil field, well workover is used, and is specifically related to a kind of safety operation control system that can effectively control the hydraulic motor running.
Background technology
At present, the drilling well of domestic production, well workover hydraulic power tongs because many people operate casualty accident inharmonious or that maloperation causes and happen occasionally, bring heavy financial burden and emotional distress to oil field and operator.Now, certain safety control system also is equipped with in some oil field and part hydraulic power tongs manufacturer on hydraulic power tongs, but mainly is the lock control at the reversal valve handle.By long oil thread rope, the reversal valve handle is carried out long-range lock control.And this scheme is not suitable for the low temp operation in winter very much, because of low temperature can make oil thread rope freeze or sends out puckery, can't carry out normal reset operation.
Summary of the invention
The purpose of this utility model is to provide a kind of and can effectively controls the hydraulic power tongs motor running and stop the special-purpose safety operation control system of hydraulic power tongs can to operate under full climatic condition.
The purpose of this utility model is achieved through the following technical solutions.
A kind of hydraulic power tongs hydraulic safe control system.This control system mainly is made up of long-range pressure-relief valve, Remote control valve and outer connecting tube road.The release valve body of long-range pressure-relief valve is by two thread connection hydraulic fluid ports---the oil return connecting port and the oil-feed connecting port on top, carry out outer the connection with the hydraulic power tongs hydraulic system, two little hydraulic fluid ports of thread connection---pressure-relief valve oil-out and pressure-relief valve oil return opening by the side, connect with two little hydraulic fluid ports of screw thread of Remote control valve side, thereby realized the connection of whole safety operation control system control oil channel.
Long-range pressure-relief valve intracoelomic cavity is provided with three grease chambeies, high-pressure oil chamber, unloads pumping chamber and Remote grease chamber.The oil return connecting port on the valve body top of long-range pressure-relief valve and oil-feed connecting port respectively with the high-pressure oil chamber of body cavity, unload the pumping chamber and communicate, and to the advancing of external hydraulic power tongs hydraulic system, return line.There are two little hydraulic fluid ports of thread connection formula---pressure-relief valve oil-out and pressure-relief valve oil return opening in side, Remote grease chamber, respectively with the linking into and out of oil circuit of Remote control valve.
Be provided with a guiding valve in the release valve body, processing cannelure in guiding valve one end cylindrical place communicates with high-pressure oil chamber; Release valve body right-hand member is provided with is convenient to the slotted hole grease chamber that hydraulic oil is stored and transmitted, the hole wall of this slotted hole grease chamber is provided with four guiding valve fuel feed holes, and there are four road grooves the guiding valve right side, and the guiding valve left end has a spring-loaded hole, also be another grease chamber of guiding valve simultaneously, it is built-in with a pressure-relief valve spring; The spring-loaded hole communicates with the Remote grease chamber.One damping through hole is arranged between the left and right grease chamber of guiding valve.
End cover---the pressure-relief valve left end seal cover and the pressure-relief valve of a band sealing ring respectively are set in the release two ends of valve body
The right-hand member seal cover is fixed tightly on the release valve body by bullet pad and hexagon socket cap head screw, is used for the location and the sealing of guiding valve, wherein on the pressure-relief valve left end seal cover spring-loaded hole is arranged, corresponding with the slide valve spring support holes, a built-in pressure-relief valve spring is convenient to the guiding valve usefulness that resets.。
Two annular grease chambeies are set in the application valve body of Remote control valve, inlet space and oil revolute chamber, respectively there are a little hydraulic fluid port of thread connection formula---control valve oil-out and control valve oil-in in the side of inlet space and oil revolute chamber, respectively with the linking into and out of oil circuit of long-range pressure-relief valve.
A spool is set in the application valve body, and the spool left end is processed with a spring-loaded hole, communicates the built-in control valve spring in spring-loaded hole with oil revolute chamber; Mid portion is processed with a spool cannelure, and is processed with four little fuel feed holes at spool cannelure place, and the spring-loaded hole is communicated with by an oil duct with four fuel feed holes; The spool right-hand member is processed into ball shape (bulb feeler lever), is convenient to contact slip with the hydraulic power tongs safety door.Spool right-hand member and body cavity contact position are provided with an annular seal groove, are built-in with sealing ring, are used for the sealing of spool cylindrical.
At the application valve body two ends end cover is arranged---control valve left end seal cover and control valve right-hand member seal cover.And be fixed tightly on the application valve body by bullet pad and hexagon socket cap head screw.Wherein, control valve left end seal cover is provided with control valve left end sealing ring and spring-loaded hole, is used for the location and the control valve end face seal of control valve spring, is built-in with a control valve spring, is used for resetting of spool.Like this, the completed assembled structure of Remote control valve has just been decided.Remote control valve is when connecting with the hydraulic power tongs assembling, and the safety door of bulb feeler lever and hydraulic power tongs has corresponding position relation.
When the hydraulic power tongs safety door was opened, the bulb feeler lever of Remote control valve was subjected to the extruding of sliding, and spool produces to shrink and moves, and the oil return control oil channel of Remote control valve and long-range pressure-relief valve is connected.After the oil return control oil channel is connected, II place, the spring-loaded hole oil pressure in long-range pressure-relief valve internal spool valve left side is reduced, the guiding valve two ends produce pressure differential, force guiding valve to be moved to locations of low pressure by locations of high pressure.After the spool displacement, the high-pressure oil chamber of release valve body is communicated with unloading the pumping chamber, directly through oil return connecting port flow back into the return line of hydraulic power tongs hydraulic system from the hydraulic oil that release valve body oil-feed connecting port comes this moment.Therefore, hydraulic motor can't not turn round because of reaching specified oil pressure.
When the hydraulic power tongs safety door was closed, the external force that acts on control valve bulb feeler lever was eliminated, because the elastic force of application valve body inner control valve spring makes spool return to original position.At this moment, Remote control valve is blocked with the oil return circuit that connects of long-range pressure-relief valve, the oil pressure at the long-range pressure-relief valve internal spool valve two ends state that tends to balance, under the effect of pressure-relief valve spring force, guiding valve returns to the origin-location, the oil return connecting port is sealed, and the hyperbaric chamber of release valve body no longer communicates with the release chamber.At this moment, the hydraulic power tongs system pressure is increased to the rated pressure value gradually, and hydraulic motor turns round because of force value raises.
By the opening and closing of hydraulic power tongs safety door, can effectively control the running of hydraulic motor and stop.Therefore, that this safety operation control system has is in light weight, volume is little, stable performance, advantage such as easy to operate, safe and reliable, has favorable applicability and reliability.
Description of drawings
Fig. 1 is an entire system structure cross-sectional schematic of the present utility model.
Fig. 2 is the schematic top plan view of Fig. 1.
Fig. 3 is the structural representation of release valve body.
Fig. 4 is the structural representation of guiding valve.
Fig. 5 is the structural representation of application valve body.
Fig. 6 is the structural representation of spool.
Among the figure: 1, the release valve body, 2, pressure-relief valve left end seal cover, 3, pressure-relief valve left end sealing ring, 4, the pressure-relief valve spring, 5, spring-loaded hole I, 6, the Remote grease chamber, 7, spring-loaded hole II, 8, unload pumping chamber 9, the oil return connecting port, 10, the damping through hole, 11, guiding valve, 12, high-pressure oil chamber, 13, the slotted hole grease chamber, 14, the guiding valve fuel feed hole, 15, the oil-feed connecting port, 16, groove, 17, pressure-relief valve right-hand member sealing ring, 18, pressure-relief valve right-hand member seal cover, 19, control valve left end seal cover, 20, oil revolute chamber, 21, spring-loaded hole III, 22, oil duct, 23, inlet space, 24, the spool cannelure, 25, spool, 26, control valve right-hand member seal cover, 27, spherical contact, 28, valve core seal ring, 29, the spool fuel feed hole, 30, application valve body, 31, control valve spring, 32, spring-loaded hole IV, 33, control valve left end sealing ring, 34, pressure-relief valve installs and fixes the hole, 35, bullet pad I, 36, hexagon socket cap head screw I, 37, the pressure-relief valve oil-out, 38, the pressure-relief valve oil return opening, 39, the control valve oil-out, 40, the control valve oil-in, 41, control valve installs and fixes the hole, 42, hexagon socket cap head screw II, 43, bullet pad II, 44, the little return line of pressure-relief valve, 45, the little in-line of control valve.
The specific embodiment
Referring to Fig. 1-Fig. 6, hydraulic power tongs specific hydraulic safety control system of the present utility model mainly is made up of long-range pressure-relief valve, Remote control valve and outside connecting pipeline.
Long-range pressure-relief valve is by release valve body 1, pressure-relief valve left end seal cover 2, pressure-relief valve left end sealing ring 3, pressure-relief valve spring 4, spring-loaded hole I 5, Remote grease chamber 6, spring-loaded hole II 7, unload pumping chamber 8, oil return connecting port 9, damping through hole 10, guiding valve 11, high-pressure oil chamber 12, slotted hole grease chamber 13, guiding valve fuel feed hole 14, oil-feed connecting port 15, groove 16, pressure-relief valve right-hand member sealing ring 17, pressure-relief valve right-hand member seal cover 18, pressure-relief valve installs and fixes hole 34, bullet pad I 35, hexagon socket cap head screw I 36, pressure-relief valve oil-out 37, pressure-relief valve oil return opening 38 unit constructions such as grade form, being used for carrying out the release task of hydraulic power tongs safety operation control system, is the operating part in the native system.
Remote control valve is by control valve left end seal cover 19, oil revolute chamber 20, spring-loaded hole III 21, oil duct 22, inlet space 23, spool cannelure 24, spool 25, control valve right end cap 26, spherical contact 27, valve core seal ring 28, spool fuel feed hole 29, application valve body 30, control valve spring 31, spring-loaded hole IV 32, control valve left end sealing ring 33, control valve oil-out 39, control valve oil-in 40, control valve installs and fixes hole 41, hexagon socket cap head screw II42, bullet pad II 43 combines, and is used for controlling the hydraulic power tongs SOS, long-range pressure-relief valve is sent release or stops the release instruction, is the control section in the native system.
Outside connecting pipeline is mainly combined with the little in-line 45 of control valve by the little return line 44 of pressure-relief valve, is used for connecting next, the oil return control oil channel of long-range pressure-relief valve and Remote control valve.
In addition, long-range release valve body 1 bottom has four pressure-relief valves to install and fix the hole, has six control valves to install and fix the hole on the Long-distance Control valve body 30, is convenient to and being connected and fixed of hydraulic power tongs corresponding site.
Use principle and operating procedure to hydraulic power tongs safety operation control system is described further below:
Referring to Fig. 1-Fig. 6, suppose the aboveground operation in oil field, need to change the pincers tooth.Earlier hand-operated direction valve is placed meta, open safety door, this moment, safety door produced the extruding of sliding to the spherical feeler lever 27 of 25 right-hand members of the spool in the Remote control valve, and spool 25 stressed generations are shunk and moved.When safety door is opened fully, be that spool 25 shrinks the optimum position of moving just.At this moment, spool cannelure 24 positions on the spool 25 just in time move to inlet space 23 places on the application valve body 30.Hydraulic oil from long-range pressure-relief valve, through the little in-line 45 of control valve, control valve oil-in 40, enter into the inlet space 23 of control valve, four spool fuel feed holes 29 in the spool cannelure 24 on spool 25 enter in the oil duct 22 then, spring-loaded hole III 21 flows through, enter in the little return line 44 of pressure-relief valve by control valve oil-out 39, unload pumping chamber 8 through what pressure-relief valve oil return opening 38 entered into long-range pressure-relief valve again, after oil return connecting port 9 flow back in the return line of hydraulic power tongs hydraulic system.Because the spring-loaded hole II 7 of guiding valve 11 left ends in the long-range pressure-relief valve communicates with the little in-line 45 of control valve, and the little in-line 45 interior hydraulic oil of control valve are laid down suddenly now, directly cause the spring-loaded hole II 7 interior oil pressure of guiding valve 11 left ends to descend.And damping through hole 10 has little time to replenish hydraulic oil because the aperture is very little, and the oil pressure of slotted hole grease chamber 13 that therefore makes guiding valve 11 right-hand members makes guiding valve 11 positions begin to be moved to the low pressure place by the high pressure place greater than the oil pressure in the guiding valve 11 left end spring-loaded hole II 7.Because move the position of guiding valve 11, make in the release valve body 1 high-pressure oil chamber 12 with unload pumping chamber 8 and directly gang up, hydraulic oil from oil-feed connecting port 15 directly flows to oil return connecting port 9, flow at last in the return line of hydraulic power tongs hydraulic system, the hydraulic system of whole hydraulic power tongs has been produced release.And hydraulic motor can't not turn round owing to reach specified oil pressure.Therefore, be exactly that others' mistake has been bumped the reversal valve handle, can not make the hydraulic motor running yet.At this moment, the operator is just can be very safe relieved changes other maintenance operation item such as pincers tooth.
After the maintenance item finishes, the closed safe door, at this moment because the external force that acts on the Remote control valve bulb feeler lever 27 is eliminated, the elastic force of control valve spring 31 makes spool 25 return to original position.The oil circuit that the little in-line 45 of Remote control valve leads to application valve body 30 is blocked.At this moment, the hydraulic oil of coming in through oil-feed connecting port 15, in high-pressure oil chamber 12, guiding valve fuel feed hole 14, slotted hole grease chamber 13, damping through hole 10 enter into the spring-loaded hole II 7 of guiding valve 11 left ends, tend to balance with high-pressure oil chamber's 12 oil pressure in Remote grease chamber 6, pressure-relief valve guiding valve 11 returns to the origin-location under the elastic force effect of spring 4.High-pressure oil chamber 12 in the release valve body 1 with unload pumping chamber 8 and no longer gang up.At this moment, the system pressure of hydraulic power tongs is increased to the rated pressure value gradually, and hydraulic motor also runs well because of reaching its force value.
Claims (7)
1. hydraulic power tongs hydraulic safe control system, it is characterized in that: it comprises long-range pressure-relief valve, Remote control valve and outer connecting tube road; The release valve body of long-range pressure-relief valve is by two thread connection hydraulic fluid ports---the oil return connecting port and the oil-feed connecting port on top, carry out outer the connection with the hydraulic system of hydraulic power tongs, by two little hydraulic fluid ports of thread connection---the pressure-relief valve oil-out and the pressure-relief valve oil return opening of side, connect with two little hydraulic fluid ports of screw thread of Remote control valve side.
2. hydraulic power tongs hydraulic safe control system according to claim 1 is characterized in that: described long-range pressure-relief valve is provided with three grease chambeies in the valve body: high-pressure oil chamber, unload pumping chamber and Remote grease chamber; The oil return connecting port on the valve body top of long-range pressure-relief valve and oil-feed connecting port respectively with the high-pressure oil chamber of body cavity, unload the pumping chamber and communicate, and to the advancing of external hydraulic power tongs hydraulic system, return line; There are two little hydraulic fluid ports of thread connection formula---pressure-relief valve oil-out and pressure-relief valve oil return opening in side, Remote grease chamber, respectively with the linking into and out of oil circuit of Remote control valve.
3. a kind of hydraulic power tongs hydraulic safe control system according to claim 1, it is characterized in that: be provided with a guiding valve in the described release valve body, release valve body right-hand member is provided with is convenient to the slotted hole grease chamber that hydraulic oil is stored and transmitted, the hole wall of this slotted hole grease chamber is provided with four guiding valve fuel feed holes, there are four road grooves the guiding valve right side, the guiding valve left end has a spring-loaded hole, also is another grease chamber of guiding valve simultaneously, and it is built-in with a pressure-relief valve spring; One damping through hole is arranged between the left and right grease chamber of guiding valve.
4. a kind of hydraulic power tongs hydraulic safe control system according to claim 1, it is characterized in that: the release two ends of valve body has end cover---the pressure-relief valve left end seal cover and the pressure-relief valve right-hand member seal cover of band sealing ring, be fixed tightly on the release valve body by bullet pad and hexagon socket cap head screw, wherein on the pressure-relief valve left end seal cover spring-loaded hole arranged.
5. a kind of hydraulic power tongs hydraulic safe control system according to claim 1, it is characterized in that: two grease chambeies are set: inlet space and oil revolute chamber in the application valve body of Remote control valve, respectively there are a little hydraulic fluid port of thread connection formula---control valve oil-out and control valve oil-in in the side of inlet space and oil revolute chamber, respectively with the linking into and out of oil circuit of long-range pressure-relief valve.
6. a kind of hydraulic power tongs hydraulic safe control system according to claim 1 is characterized in that: a spool is set in the application valve body, and the spool left end has a spring-loaded hole, a built-in control valve spring; Mid portion is processed with a spool cannelure, and is processed with four little fuel feed holes at spool cannelure place, and the spring-loaded hole is communicated with by an oil duct with four fuel feed holes; The spool right-hand member is processed into ball shape, and spool right-hand member and body cavity contact position are provided with an annular seal groove, are built-in with sealing ring.
7. a kind of hydraulic power tongs hydraulic safe control system according to claim 1, it is characterized in that: there is end cover at the two ends of application valve body---control valve left end seal cover and control valve right-hand member seal cover, and be fixed tightly on the application valve body by bullet pad and hexagon socket cap head screw, control valve left end seal cover is provided with control valve left end sealing ring and spring-loaded hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205227216U CN201802328U (en) | 2010-09-09 | 2010-09-09 | Hydraulic safety control system for hydraulic power tongs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205227216U CN201802328U (en) | 2010-09-09 | 2010-09-09 | Hydraulic safety control system for hydraulic power tongs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201802328U true CN201802328U (en) | 2011-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205227216U Expired - Fee Related CN201802328U (en) | 2010-09-09 | 2010-09-09 | Hydraulic safety control system for hydraulic power tongs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201802328U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422023A (en) * | 2015-12-08 | 2016-03-23 | 盐城特达钻采设备有限公司 | Opening type hydraulic power tongs capable of being remotely and hydraulically controlled |
| CN108223629A (en) * | 2018-03-23 | 2018-06-29 | 中国十七冶集团有限公司 | Hydraulic gyration part from moving constraint control device |
-
2010
- 2010-09-09 CN CN2010205227216U patent/CN201802328U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422023A (en) * | 2015-12-08 | 2016-03-23 | 盐城特达钻采设备有限公司 | Opening type hydraulic power tongs capable of being remotely and hydraulically controlled |
| CN108223629A (en) * | 2018-03-23 | 2018-06-29 | 中国十七冶集团有限公司 | Hydraulic gyration part from moving constraint control device |
| CN108223629B (en) * | 2018-03-23 | 2019-05-03 | 中国十七冶集团有限公司 | Hydraulic gyration part from moving constraint control device |
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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: 20110420 Termination date: 20170909 |
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| CF01 | Termination of patent right due to non-payment of annual fee |