CN204175594U - Screw pump reverses hydraulic damper - Google Patents
Screw pump reverses hydraulic damper Download PDFInfo
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- CN204175594U CN204175594U CN201420581034.XU CN201420581034U CN204175594U CN 204175594 U CN204175594 U CN 204175594U CN 201420581034 U CN201420581034 U CN 201420581034U CN 204175594 U CN204175594 U CN 204175594U
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- check valve
- rotating shaft
- screw pump
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- 239000010720 hydraulic oil Substances 0.000 claims description 7
- 238000013016 damping Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 6
- 238000009827 uniform distribution Methods 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000004146 energy storage Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Reciprocating Pumps (AREA)
Abstract
The utility model discloses a kind of screw pump and reverse hydraulic damper, belong to oil field development technical field.Described screw pump reverses hydraulic damper and comprises hollow rotating shaft, bearing, piston/cylinder, upper cover, lower cover, upper holder block, lower lock block, ball, support ring set, piston, big spring, cylindrical roller, raceway body, check valve assembly, check free wheel device and jaw clutch.The utility model is by check free wheel device, lower lock block, piston/cylinder and check valve assembly, when screw pump sucker rods reverses, not only limit the maximum reverse of sucker rod, and consume energy storage in sucker rod simultaneously, and the utility model closely operates without the need to operator, in addition, reverse hydraulic damper inside because the utility model hydraulic seal is contained in described screw pump, without the need to hydraulic station, therefore do not need frequent maintenance, safe and reliable, therefore the utility model is easy to apply.
Description
Technical field
The utility model relates to oil field development technical field, and particularly a kind of screw pump reverses hydraulic damper.
Background technique
In sticky at height, the high gassiness of current use screw pump oil production, Gao Hansha, High water cut and stripper well, more conventional oil production method has many advantages, therefore application is quite extensive.But when screw pump shut down suddenly or holddown time, being stored in distortion torsional-energy in roofbolt can release fast, and roofbolt is reversed fast.Roofbolt Umklapp process comprises from slow to fast and two stages from fast to slow.In this process, roofbolt can produce excited vibration, and when its energizing frequency is identical with the roofbolt natural frequency of vibration or the well head natural frequency of vibration, can produce resonance, speed reversal can reach high speed driving state instantaneously.So screw pump reverse rotation can bring a lot of harm, such as: roofbolt is threaded off, polished rod gets rid of curved, surface drive damage of components; Jeopardize the safety of field maintenance operator, hidden danger becoming production accident etc.Design is needed to prevent the reply device of reversion suddenly for screw pump.
Up to the present the anti-reverse mechanism structural type that driving unit on screw pump uses has: the anti-reverse system of click, the anti-reverse system of friction type, the anti-reverse system of voussoir, the anti-reverse system of electromagnetic type, hydraulic reverse turning-proof system.Be illustrated for the anti-reverse system of hydraulic type below, the hydraulic reverse turning-proof screw pump drive device that the anti-reverse system of hydraulic type designs for Chen Zhi state of Daqing Oil Field Lishen Pump Industry Co., Ltd etc., this hydraulic reverse turning-proof screw pump drive device can not only prevent high speed reverse rotation, and the release of sucker rod energy can be realized, it is without the need to manually closely operating, safe and reliable.
Realizing in process of the present utility model, inventor finds that prior art at least exists following problem:
Single functionally hydraulic reverse turning-proof screw pump drive device reaches designing requirement, but because petroleum production is field work substantially, and this device must be equipped with hydraulic station, this just requires staff and frequently checks, safeguards, limits its application area.
Model utility content
Need staff and frequently check to solve hydraulic reverse turning-proof screw pump drive device of the prior art, safeguard, limit the problem of its application area, the utility model embodiment provides a kind of screw pump and reverses hydraulic damper.Described technological scheme is as follows:
A kind of screw pump reverses hydraulic damper, described screw pump reverses hydraulic damper and comprises: hollow rotating shaft, bearing, piston/cylinder, upper cover, lower cover, upper holder block, lower lock block, ball, support ring set, piston, big spring, cylindrical roller, raceway body, check valve assembly, check free wheel device and jaw clutch
Described hollow rotating shaft is supported on described bearing, described Bearing outer overlaps described piston/cylinder, described piston/cylinder can rotate relative to described hollow rotating shaft, described upper cover, described upper holder block, described support ring set, described lower cover and described lower lock block are all enclosed within described hollow rotating shaft, described upper cover and described upper holder block are all positioned at above described piston/cylinder, described upper holder block is fixedly connected with described piston/cylinder, described lower cover and described lower lock block are all positioned at below described piston/cylinder, described lower lock block is fixedly connected with described piston/cylinder, described support ring is set between described upper cover and described lower cover, corresponding annular groove is provided with between described upper cover with described piston/cylinder, corresponding annular groove is provided with between described lower cover with described piston/cylinder, described corresponding annular groove composition raceway, described ball is covered with described raceway, described ball can rotate relative to described raceway, piston hole is provided with in described piston/cylinder, described piston, described big spring and described check valve assembly are arranged in described piston hole according to order from outside to inside, described raceway body is enclosed within the sidepiece of described piston/cylinder, described cylindrical roller is arranged between described raceway body and described piston, described cylindrical roller can roll by relatively described raceway body, by the effect of described big spring and described piston, described cylindrical roller is made to be pressed on described raceway body all the time, described piston is followed described piston/cylinder and is rotated, drive the relatively described piston hole axial direction of described piston to move reciprocatingly by described cylindrical roller simultaneously, described check valve assembly work is driven by described reciprocating motion of the pistons, described check free wheel device is enclosed within described hollow rotating shaft, and described check free wheel device is arranged in described lower lock block, described check free wheel device comprises rotor and stator, described rotor is connected with described hollow rotating shaft, described rotor is followed described hollow rotating shaft and is rotated, described stator is connected with described lower lock block, described lower lock block follows described stator rotation, it is outside that described jaw clutch is enclosed within described hollow rotating shaft, described jaw clutch is connected with described hollow rotating shaft, described jaw clutch is followed described hollow rotating shaft and is rotated,
Original state, is all full of hydraulic oil in the gap in described piston hole, between described hollow rotating shaft and described upper holder block and described lower lock block and between described bearing,
Reversion working state, reversed by described hollow rotating shaft, described stator, described lower lock block and described piston/cylinder is driven to rotate, described piston is driven to rotate by described piston/cylinder, described reciprocating motion of the pistons simultaneously, drive described check valve assembly work, realize that the damping of described check valve assembly fluid is large, feed liquor damping is little.
Alternatively, described piston/cylinder is pie, described piston/cylinder is provided with center hole, described piston/cylinder radial direction is provided with at least two described piston holes, the relatively described piston/cylinder circumference uniform distribution of described at least two piston holes is arranged, described at least two piston holes all communicate with described center hole, each piston hole in described at least two piston holes arranges first order shoulder hole from outside to inside in turn, second level shoulder hole and third level shoulder hole, described big spring one end withstands on described piston, the described big spring the other end withstands on the step place of described first order shoulder hole, correspondingly, described piston, described big spring and described check valve assembly are all at least two, described piston, described big spring and described check valve assembly and described piston hole are arranged one by one, described check valve assembly is arranged between the step of described first order shoulder hole and the step of described second level shoulder hole.
Alternatively, described check valve assembly comprises pressure head, little spring, check valve sheet and small nozzle, described pressure head is the cylindricality of inner hollow, described pressure head outer wall is provided with outer step, described pressure head inwall is provided with interior step, the step of the relatively described first order shoulder hole in described pressure head upper-end surface is protruding, described outer step is concordant with the step of described first order shoulder hole, the step of the relatively described second level, described pressure head lower end surface shoulder hole is outwards arranged, described pressure head is fixedly connected with described piston/cylinder, described small nozzle is arranged between the step of described pressure head lower end surface and described second level shoulder hole, it is inner that described little spring and described check valve sheet are arranged on described pressure head, described little spring one end withstands on described interior step, the described little spring the other end withstands in described check valve sheet, original state, described check valve sheet is pressed on described small nozzle.
Alternatively, described small nozzle is pie, described small nozzle is provided with small nozzle center hole and three arcuate sockets, described three arcuate sockets are positioned at outside described small nozzle center hole, the relatively described small nozzle circumference uniform distribution of described three arcuate sockets, described check valve sheet comprises check valve sheet center hole, and described check valve sheet center bore is greater than described small nozzle center bore, and described check valve sheet center bore is less than described three arcuate socket internal diameters.
Alternatively, described raceway body inner surface profile is cycloid profile.
Alternatively, the bolt that is fixedly connected as between described upper holder block with described piston/cylinder is connected.
Alternatively, the bolt that is fixedly connected as between described lower lock block with described piston/cylinder is connected.
Alternatively, between described rotor with described hollow rotating shaft, key is connected.
Alternatively, between described stator with described lower lock block, key is connected.
Alternatively, between described jaw clutch with described hollow rotating shaft, key is connected.
The beneficial effect that the technological scheme that the utility model embodiment provides is brought is:
The utility model is by check free wheel device, lower lock block, piston/cylinder and check valve assembly, when screw pump sucker rods reverses, not only limit the maximum reverse of sucker rod, and consume energy storage in sucker rod simultaneously, and the utility model closely operates without the need to operator, in addition, reverse hydraulic damper inside because the utility model hydraulic seal is contained in described screw pump, without the need to hydraulic station, therefore do not need frequent maintenance, safe and reliable, therefore the utility model is easy to apply.
Accompanying drawing explanation
In order to be illustrated more clearly in the technological scheme in the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the sectional view of the screw pump reverse hydraulic damper that the utility model embodiment provides;
Fig. 2 is the A direction view of Fig. 1;
Fig. 3 is the partial enlarged drawing of B in Fig. 1;
Fig. 4 is the amplification assumption diagram of the raceway body that the utility model embodiment provides;
Fig. 5 is the amplification assumption diagram of the small nozzle that the utility model embodiment provides;
Fig. 6 A is the enlarged front view of the piston/cylinder that the utility model embodiment provides;
Fig. 6 B is the amplification plan view of the piston/cylinder that the utility model embodiment provides;
Fig. 6 C is the C-C sectional view in Fig. 6 A.
In figure, each symbol represents that implication is as follows:
1 supports ring set,
2 raceway bodies, 21 raceway body internal surfaces,
3 cylindrical rollers,
4 big springs,
5 pressure heads, 51 outer step, step in 52,
6 small nozzles, 61 small nozzle center holes, 62 arcuate sockets,
7 check free wheel devicees,
8 jaw clutches,
9 lower lock blocks,
10 bearings,
11 lower covers,
12 little springs,
13 pistons,
14 upper covers,
15 upper holder blocks,
16 hollow rotating shafts,
17 check valve sheet, 171 check valve sheet center holes,
18 balls,
19 piston/cylinders, 191 center holes, 192 piston holes, 192.1 first order shoulder holes, 192.2 second level shoulder holes, 192.3 third level shoulder holes,
Ф 1 small nozzle center bore,
Ф 2 arcuate socket internal diameter.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model mode of execution is described in further detail.
As shown in Figure 1, the utility model provides a kind of screw pump and reverses hydraulic damper, also can see Fig. 2, the present embodiment take Fig. 1 as main being illustrated, described screw pump reverses hydraulic damper and comprises: hollow rotating shaft 16, bearing 10, piston/cylinder 19, upper cover 14, lower cover 11, upper holder block 15, lower lock block 9, ball 18, support ring set 1, piston 13, big spring 4, cylindrical roller 3, raceway body 2, check valve assembly (see B portion in Fig. 1), check free wheel device 7 and jaw clutch 8
Described hollow rotating shaft 16 is supported on described bearing 10, described bearing 10 outer cover described piston/cylinder 19, described piston/cylinder 19 can rotate relative to described hollow rotating shaft 16, described upper cover 14, described upper holder block 15, described support ring set 1, described lower cover 11 and described lower lock block 9 are all enclosed within described hollow rotating shaft 16, described upper cover 14 and described upper holder block 15 are all positioned at above described piston/cylinder 19, described upper holder block 15 is fixedly connected with described piston/cylinder 19, described lower cover 11 and described lower lock block 9 are all positioned at below described piston/cylinder 19, described lower lock block 9 is fixedly connected with described piston/cylinder 19, described support ring set 1 is arranged between described upper cover 14 and described lower cover 11, corresponding annular groove is provided with between described upper cover 14 with described piston/cylinder 19, corresponding annular groove is provided with between described lower cover 11 with described piston/cylinder 19, described corresponding annular groove composition raceway, described ball 18 is covered with described raceway, described ball 18 can rotate relative to described raceway, piston hole 192 (see Fig. 6 C) is provided with in described piston/cylinder 19, described piston 13, described big spring 4 and described check valve assembly (see B portion in Fig. 1) are arranged in described piston hole 192 (see Fig. 6 C) according to order from outside to inside, described raceway body 2 is enclosed within the sidepiece of described piston/cylinder 19, described cylindrical roller 3 is arranged between described raceway body 2 and described piston 13, described cylindrical roller 3 can roll by relatively described raceway body 2, by the effect of described big spring 4 and described piston 13, described cylindrical roller 3 is made to be pressed on described raceway body 2 all the time, described piston 13 is followed described piston/cylinder 19 and is rotated, drive described piston 13 relatively described piston hole 192 (see Fig. 6 C) axial direction to move reciprocatingly by described cylindrical roller 3 simultaneously, described check valve assembly (see B portion in Fig. 1) is driven to work by the to-and-fro motion of described piston 13, described check free wheel device 7 is enclosed within described hollow rotating shaft 16, and described check free wheel device 7 is arranged in described lower lock block 9, described check free wheel device 7 comprises rotor and stator, described rotor is connected with described hollow rotating shaft 16, described rotor is followed described hollow rotating shaft 16 and is rotated, described stator is connected with described lower lock block 9, described lower lock block 9 follows described stator rotation, it is outside that described jaw clutch 8 is enclosed within described hollow rotating shaft 16, described jaw clutch 8 is connected with described hollow rotating shaft 16, described jaw clutch 8 is followed described hollow rotating shaft 16 and is rotated,
Original state, is all full of hydraulic oil in the gap in described piston hole 192, between described hollow rotating shaft 16 and described upper holder block 15 and described lower lock block 9 and between described bearing 10,
Reversion working state, reversed by described hollow rotating shaft 16, described stator, described lower lock block 9 and described piston/cylinder 19 is driven to rotate, described piston 13 is driven to rotate by described piston/cylinder 19, described piston 13 to-and-fro motion simultaneously, drive described check valve assembly (see B portion in Fig. 1) to work, realize that described check valve assembly (see B portion in Fig. 1) fluid damping is large, feed liquor damping is little.
Particularly, ball 18 is covered with below above in the annular groove that upper cover 14 is arranged and the raceway that the annular groove that piston/cylinder 19 is arranged forms, ball 18 is covered with above below in the annular groove that lower cover 11 is arranged and the raceway that the annular groove that piston/cylinder 19 is arranged forms, by said structure, for piston/cylinder 19 and upper cover 14, relatively rotating of occurring between piston/cylinder 19 and lower cover 11 provide support and reduce resistance.
Wherein, described check free wheel device 7 and described jaw clutch 8 are prior art.
Working principle of the present utility model:
As shown in Figure 1, during work, hollow rotating shaft 16 is inserted in sucker rod polished rod (accompanying drawing is not drawn), jaw clutch 8 is assembled together with the jaw clutch 8 (accompanying drawing is not drawn) on sucker rod polished rod, with bolt, the equipment such as lower cover 11 and bottom speed reducer (accompanying drawing is not drawn) is tightened together.When sucker rod rotates forward, hollow rotating shaft 16 drives the rotor turns of check free wheel device 7, the stator transfixion of check free wheel device 7, therefore piston/cylinder 19 does not have action.When sucker rod reverses due to a variety of causes, the rotor of check free wheel device 7 rotates along with hollow rotating shaft 16, and drives the stator of check free wheel device 7, lower lock block 9 and piston/cylinder 19 to rotate.Under the effect of big spring 4 and piston 13, cylindrical roller 3 is made to be pressed on raceway body 2 all the time, piston 13 is followed while piston/cylinder 19 rotates, driven by cylindrical roller 3, piston 13 opposing pistons hole 192 (see Fig. 6 C) axial direction moves reciprocatingly, and by piston 13 to-and-fro motion compression hydraulic oil, check valve assembly (see B portion in Fig. 1) is worked, thus the maximum reverse of restriction sucker rod, consume the energy that in sucker rod, storage stores simultaneously.
The utility model is by check free wheel device 7, lower lock block 9, piston/cylinder 19 and check valve assembly (see B portion in Fig. 1), when screw pump sucker rods reverses, not only limit the maximum reverse of sucker rod, and consume energy storage in sucker rod simultaneously, and the utility model closely operates without the need to operator, in addition, hydraulic damper inside is reversed because the utility model hydraulic seal is contained in described screw pump, without the need to hydraulic station, therefore frequent maintenance is not needed, safe and reliable, therefore the utility model is easy to apply.
Alternatively, as shown in Figure 6A, described piston/cylinder 19 is pie, as shown in Figure 6 C, described piston/cylinder 19 is provided with center hole 191, described piston/cylinder 19 radial direction is provided with at least two described piston holes 192, described at least two piston holes 192 relatively described piston/cylinder 19 circumference uniform distribution is arranged, described at least two piston holes 192 all communicate with described center hole 191, each piston hole 192 in described at least two piston holes 192 arranges first order shoulder hole 192.1 from outside to inside in turn, second level shoulder hole 192.2 and third level shoulder hole 192.3, more specifically, first order shoulder hole 192.1, second level shoulder hole 192.2 and the descending setting of third level shoulder hole 192.3, as shown in Figure 1, described big spring 4 one end withstands on described piston 13, described big spring 4 the other end withstands on the step place (as shown in Figure 6 C) of described first order shoulder hole 192.1, ensure rebound in time after piston 13 is compressed, prepare compression process next time.Correspondingly, described piston 13, described big spring 4 and described check valve assembly (see B portion in Fig. 1) are all at least two, described piston 13, described big spring 4 and described check valve assembly (see B portion in Fig. 1) and described piston hole 192 (as shown in Figure 6 C) are arranged one by one, and described check valve assembly (see B portion in Fig. 1) is arranged between the step (as shown in Figure 6 C) of described first order shoulder hole 192.1 and the step (as shown in Figure 6 C) of described second level shoulder hole 192.2.
As shown in Figure 6 C, in the present embodiment, described piston hole 192 is four, and correspondingly, described piston 13 (as shown in Figure 1), described big spring 4 (as shown in Figure 1) and described check valve assembly (see B portion in Fig. 1) are four.Certainly, one of ordinary skill in the art will appreciate that, described piston hole 192 can also be the quantity such as two, three, five, six.
Alternatively, as shown in Figure 3, described check valve assembly comprises pressure head 5, little spring 12, check valve sheet 17 and small nozzle 6, described pressure head 5 is the cylindricality of inner hollow, described pressure head 5 outer wall is provided with outer step 51, described pressure head 5 inwall is provided with interior step 52, the step of described pressure head 5 upper-end surface relatively described first order shoulder hole 192.1 (as shown in Figure 6 C) is protruding, described outer step 51 is concordant with the step of described first order shoulder hole 192.1 (as shown in Figure 6 C), the step of relatively described second level shoulder hole 192.2, described pressure head 5 lower end surface (as shown in Figure 6 C) is outwards arranged, described pressure head 5 is fixedly connected with described piston/cylinder 19, described small nozzle 6 is arranged between the step of described pressure head 5 lower end surface and described second level shoulder hole 192.2 (as shown in Figure 6 C), it is inner that described little spring 12 and described check valve sheet 17 are arranged on described pressure head 5, described little spring 12 one end withstands on described interior step 52, described little spring 12 the other end withstands in described check valve sheet 17, original state, described check valve sheet 17 is pressed on described small nozzle 6.
Particularly, as shown in Figure 3, described pressure head 5 and described piston/cylinder 19 are for being threaded, and pressure head 5 greatly end cylindrical outer surface establishes outside thread, piston/cylinder 19 corresponding position establishes internal thread, and pressure head 5 plays and is pressed on piston/cylinder 19 by small nozzle 6 and holds the effect of little spring 12.
Alternatively, as shown in Figure 5, described small nozzle 6 is pie, described small nozzle 6 is provided with small nozzle center hole 61 and three arcuate sockets 62, described three arcuate sockets 62 are positioned at outside described small nozzle center hole 61, described three arcuate socket 62 relatively described small nozzle 6 circumference uniform distributions, and described check valve sheet 17 comprises check valve sheet center hole 171, described check valve sheet center bore is greater than described small nozzle center bore Ф 1, and described check valve sheet 17 center bore is less than described three arcuate socket internal diameter Ф 2.
Check valve assembly working principle:
As shown in Figure 3, piston 13 compression stroke check valve sheet 17 little spring 12 act under with small nozzle 6 close contact, check valve assembly realizes blocking function, and hydraulic oil can only be sprayed by small nozzle center hole 61 through check valve sheet center hole 171.The uncompressed stroke hydraulic oil of piston 13 is inhaled into, and backs down check valve sheet 17 under differential pressure action, makes a large amount of hydraulic oil flow into piston hole 192 (as shown in Figure 6 C) by small nozzle center hole 61 and three arcuate sockets 62.Thus it is large to reach oil spout resistance, the object that oil-feed resistance is little, and then cylindrical roller 3 just can be pressed on raceway without the need for too large rigidity in the oil-feed stage by big spring 4.
Alternatively, as shown in Figure 4, described raceway body internal surface 21 profile is cycloid profile, by said structure, makes piston 13 better can realize to-and-fro motion.
Alternatively, as shown in Figure 1, the bolt that is fixedly connected as between described upper holder block 15 with described piston/cylinder 19 is connected, and makes structure simple, is easy to realize.
Alternatively, as shown in Figure 1, the bolt that is fixedly connected as between described lower lock block 9 with described piston/cylinder 19 is connected, and makes structure simple, is easy to realize.
Alternatively, as shown in Figure 1, between described rotor with described hollow rotating shaft 16, key is connected, and makes structure simple, is easy to realize.More specifically, described rotor inner hole is coordinated by flat key with hollow rotating shaft 16 outer surface.
Alternatively, as shown in Figure 1, between described stator with described lower lock block 9, key is connected, and makes structure simple, is easy to realize.More specifically, the rectangle groove of described stator outer surface and the interior rectangle spline fitted of described lower lock block 9.
Alternatively, as shown in Figure 1, between described jaw clutch 8 with described hollow rotating shaft 16, key is connected, and makes structure simple, is easy to realize.More specifically, described jaw clutch 8 endoporus coordinates with flat key with described hollow rotating shaft 16 outer surface, and described jaw clutch 8 lower rectangular tooth coordinates with the jaw clutch 8 on sucker rod polished rod.
Further, as shown in Figure 1, seal element is provided with between described upper holder block 15 and described hollow rotating shaft 16, seal element is provided with between described lower lock block 9 and described hollow rotating shaft 16, seal element is provided with between described piston 13 and described piston/cylinder 19, by said structure, reach better sealing effect.
Above-mentioned the utility model embodiment sequence number, just to describing, does not represent the quality of embodiment.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a screw pump reverses hydraulic damper, it is characterized in that, described screw pump reverses hydraulic damper and comprises: hollow rotating shaft, bearing, piston/cylinder, upper cover, lower cover, upper holder block, lower lock block, ball, support ring set, piston, big spring, cylindrical roller, raceway body, check valve assembly, check free wheel device and jaw clutch
Described hollow rotating shaft is supported on described bearing, described Bearing outer overlaps described piston/cylinder, described piston/cylinder can rotate relative to described hollow rotating shaft, described upper cover, described upper holder block, described support ring set, described lower cover and described lower lock block are all enclosed within described hollow rotating shaft, described upper cover and described upper holder block are all positioned at above described piston/cylinder, described upper holder block is fixedly connected with described piston/cylinder, described lower cover and described lower lock block are all positioned at below described piston/cylinder, described lower lock block is fixedly connected with described piston/cylinder, described support ring is set between described upper cover and described lower cover, corresponding annular groove is provided with between described upper cover with described piston/cylinder, corresponding annular groove is provided with between described lower cover with described piston/cylinder, described corresponding annular groove composition raceway, described ball is covered with described raceway, described ball can rotate relative to described raceway, piston hole is provided with in described piston/cylinder, described piston, described big spring and described check valve assembly are arranged in described piston hole according to order from outside to inside, described raceway body is enclosed within the sidepiece of described piston/cylinder, described cylindrical roller is arranged between described raceway body and described piston, described cylindrical roller can roll by relatively described raceway body, by the effect of described big spring and described piston, described cylindrical roller is made to be pressed on described raceway body all the time, described piston is followed described piston/cylinder and is rotated, drive the relatively described piston hole axial direction of described piston to move reciprocatingly by described cylindrical roller simultaneously, described check valve assembly work is driven by described reciprocating motion of the pistons, described check free wheel device is enclosed within described hollow rotating shaft, and described check free wheel device is arranged in described lower lock block, described check free wheel device comprises rotor and stator, described rotor is connected with described hollow rotating shaft, described rotor is followed described hollow rotating shaft and is rotated, described stator is connected with described lower lock block, described lower lock block follows described stator rotation, it is outside that described jaw clutch is enclosed within described hollow rotating shaft, described jaw clutch is connected with described hollow rotating shaft, described jaw clutch is followed described hollow rotating shaft and is rotated,
Original state, is all full of hydraulic oil in the gap in described piston hole, between described hollow rotating shaft and described upper holder block and described lower lock block and between described bearing,
Reversion working state, reversed by described hollow rotating shaft, described stator, described lower lock block and described piston/cylinder is driven to rotate, described piston is driven to rotate by described piston/cylinder, described reciprocating motion of the pistons simultaneously, drive described check valve assembly work, realize that the damping of described check valve assembly fluid is large, feed liquor damping is little.
2. screw pump according to claim 1 reverses hydraulic damper, it is characterized in that, described piston/cylinder is pie, described piston/cylinder is provided with center hole, described piston/cylinder radial direction is provided with at least two described piston holes, the relatively described piston/cylinder circumference uniform distribution of described at least two piston holes is arranged, described at least two piston holes all communicate with described center hole, each piston hole in described at least two piston holes arranges first order shoulder hole from outside to inside in turn, second level shoulder hole and third level shoulder hole, described big spring one end withstands on described piston, the described big spring the other end withstands on the step place of described first order shoulder hole, correspondingly, described piston, described big spring and described check valve assembly are all at least two, described piston, described big spring and described check valve assembly and described piston hole are arranged one by one, described check valve assembly is arranged between the step of described first order shoulder hole and the step of described second level shoulder hole.
3. screw pump according to claim 2 reverses hydraulic damper, it is characterized in that, described check valve assembly comprises pressure head, little spring, check valve sheet and small nozzle, described pressure head is the cylindricality of inner hollow, described pressure head outer wall is provided with outer step, described pressure head inwall is provided with interior step, the step of the relatively described first order shoulder hole in described pressure head upper-end surface is protruding, described outer step is concordant with the step of described first order shoulder hole, the step of the relatively described second level, described pressure head lower end surface shoulder hole is outwards arranged, described pressure head is fixedly connected with described piston/cylinder, described small nozzle is arranged between the step of described pressure head lower end surface and described second level shoulder hole, it is inner that described little spring and described check valve sheet are arranged on described pressure head, described little spring one end withstands on described interior step, the described little spring the other end withstands in described check valve sheet, original state, described check valve sheet is pressed on described small nozzle.
4. screw pump according to claim 3 reverses hydraulic damper, it is characterized in that, described small nozzle is pie, described small nozzle is provided with small nozzle center hole and three arcuate sockets, described three arcuate sockets are positioned at outside described small nozzle center hole, the relatively described small nozzle circumference uniform distribution of described three arcuate sockets, described check valve sheet comprises check valve sheet center hole, described check valve sheet center bore is greater than described small nozzle center bore, and described check valve sheet center bore is less than described three arcuate socket internal diameters.
5. screw pump according to claim 1 reverses hydraulic damper, and it is characterized in that, described raceway body inner surface profile is cycloid profile.
6. screw pump according to claim 1 reverses hydraulic damper, and it is characterized in that, the bolt that is fixedly connected as between described upper holder block with described piston/cylinder is connected.
7. screw pump according to claim 1 reverses hydraulic damper, and it is characterized in that, the bolt that is fixedly connected as between described lower lock block with described piston/cylinder is connected.
8. screw pump according to claim 1 reverses hydraulic damper, and it is characterized in that, between described rotor with described hollow rotating shaft, key is connected.
9. screw pump according to claim 1 reverses hydraulic damper, and it is characterized in that, between described stator with described lower lock block, key is connected.
10. the screw pump according to any one of claim 1-9 claim reverses hydraulic damper, and it is characterized in that, between described jaw clutch with described hollow rotating shaft, key is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420581034.XU CN204175594U (en) | 2014-10-09 | 2014-10-09 | Screw pump reverses hydraulic damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420581034.XU CN204175594U (en) | 2014-10-09 | 2014-10-09 | Screw pump reverses hydraulic damper |
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| CN204175594U true CN204175594U (en) | 2015-02-25 |
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| CN201420581034.XU Expired - Fee Related CN204175594U (en) | 2014-10-09 | 2014-10-09 | Screw pump reverses hydraulic damper |
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| CN (1) | CN204175594U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438306A (en) * | 2016-11-24 | 2017-02-22 | 东北石油大学 | Alternating load anti-eccentric-wear pump |
| CN106989014A (en) * | 2017-05-19 | 2017-07-28 | 大庆市晟威机械制造有限公司 | A kind of screw pump direct-driving device of utilization hydraulic braking motor shaft |
| CN107023479A (en) * | 2017-05-19 | 2017-08-08 | 大庆市晟威机械制造有限公司 | A kind of screw pump direct-driving device put on brake apparatus |
| CN113171838A (en) * | 2021-04-26 | 2021-07-27 | 徐亚翠 | Integrative equipment of powder processing |
-
2014
- 2014-10-09 CN CN201420581034.XU patent/CN204175594U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438306A (en) * | 2016-11-24 | 2017-02-22 | 东北石油大学 | Alternating load anti-eccentric-wear pump |
| CN106438306B (en) * | 2016-11-24 | 2018-05-22 | 东北石油大学 | Alternating load eccentric abrasion prevention pumps |
| CN106989014A (en) * | 2017-05-19 | 2017-07-28 | 大庆市晟威机械制造有限公司 | A kind of screw pump direct-driving device of utilization hydraulic braking motor shaft |
| CN107023479A (en) * | 2017-05-19 | 2017-08-08 | 大庆市晟威机械制造有限公司 | A kind of screw pump direct-driving device put on brake apparatus |
| CN107023479B (en) * | 2017-05-19 | 2019-05-21 | 大庆市晟威机械制造有限公司 | A kind of screw pump direct-driving device set on brake apparatus |
| CN113171838A (en) * | 2021-04-26 | 2021-07-27 | 徐亚翠 | Integrative equipment of powder processing |
| CN113171838B (en) * | 2021-04-26 | 2022-08-19 | 博兴融智科技创新发展有限公司 | Integrative equipment of powder processing |
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Granted publication date: 20150225 |