CN108231215A - For the device cooled down to fuel rod - Google Patents

For the device cooled down to fuel rod Download PDF

Info

Publication number
CN108231215A
CN108231215A CN201711302062.8A CN201711302062A CN108231215A CN 108231215 A CN108231215 A CN 108231215A CN 201711302062 A CN201711302062 A CN 201711302062A CN 108231215 A CN108231215 A CN 108231215A
Authority
CN
China
Prior art keywords
liner
fuel rod
clip
support plate
cooled down
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201711302062.8A
Other languages
Chinese (zh)
Inventor
不公告发明人
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhaoqing Dinghu Sandalwood Electronic Technology Co Ltd
Original Assignee
Zhaoqing Dinghu Sandalwood Electronic Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhaoqing Dinghu Sandalwood Electronic Technology Co Ltd filed Critical Zhaoqing Dinghu Sandalwood Electronic Technology Co Ltd
Priority to CN201711302062.8A priority Critical patent/CN108231215A/en
Publication of CN108231215A publication Critical patent/CN108231215A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21CNUCLEAR REACTORS
    • G21C3/00Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
    • G21C3/30Assemblies of a number of fuel elements in the form of a rigid unit
    • G21C3/32Bundles of parallel pin-, rod-, or tube-shaped fuel elements
    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21CNUCLEAR REACTORS
    • G21C3/00Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
    • G21C3/30Assemblies of a number of fuel elements in the form of a rigid unit
    • G21C3/32Bundles of parallel pin-, rod-, or tube-shaped fuel elements
    • G21C3/322Means to influence the coolant flow through or around the bundles
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention discloses a kind of device for being cooled down to fuel rod, including cooling tube, pumping chamber, rotating vane, motor, rotating disk, current velocity controller;The form of cooling tube spirally is around fuel rod;Motor is used to pump coolant by rotating vane;Current velocity controller in the rotating disk rotated together with rotating vane for applying frictional force, to control the flow velocity of coolant;Current velocity controller includes clip-like component, a pair of of liner, a pair of of positioning pin, for the support plate that supports liner and for passing through the pressure of compressed air liner is pressed against pressing member on the rotating pan;Both ends on the length direction of support plate are supported on by a pair of of positioning pin on clip-like component;Clip-like component has a pair of of adjuster at the both ends of configuration in the longitudinal direction, and adjuster is used to adjust initial position of the liner relative to rotating disk;Pressing member is configured between a pair of of adjuster.The present invention can control the flow velocity of the coolant flowed in cooling tube.

Description

For the device cooled down to fuel rod
Technical field
The present invention relates to nuclear power station cooling technology fields, more particularly to a kind of device for being cooled down to fuel rod.
Background technology
Fuel rod in traditional nuclear power station is typically necessary to be cooled down using cooling device.
Traditional cooling device cooled down to fuel rod includes cooling tube, and coolant is equipped in the cooling tube.It should Coolant is with certain flow velocity in cooling Bottomhole pressure.
When the calorific value of fuel rod reduces, the coolant in cooling tube without keeping higher flow rate again.
Traditional technical solution can not reduce the flow velocity of coolant.
Therefore, it is necessary to a kind of new technical solution is proposed, to solve above-mentioned technical problem.
Invention content
The purpose of the present invention is to provide a kind of devices for being cooled down to fuel rod, can control in cooling tube The flow velocity of the coolant of flowing.
To solve the above problems, technical scheme is as follows:
A kind of device for being cooled down to fuel rod, the device for being used to cool down fuel rod include cooling Pipe, pumping chamber, rotating vane, motor, rotating disk, current velocity controller;The form of the cooling tube spirally is surround Fuel rod to be cooled in nuclear power station, the cooling tube is for cooling down the fuel rod;The motor is used to pass through The rotating vane pumping is placed in the coolant in the pumping chamber and the cooling tube;The current velocity controller is used for Apply frictional force in the rotating disk rotated together with the rotating vane, to control the rotating speed of the rotating vane, from And control the flow velocity of the coolant;The current velocity controller includes clip-like component, a pair of of liner, a pair of of positioning pin, is used for It supports the support plate of the liner and the liner is pressed against in the rotating disk for passing through the pressure of compressed air Pressing member;Both ends on the length direction of the support plate are supported on the clip-like component by a pair of positioning pin On;The clip-like component has a pair of of adjuster at the both ends of configuration in the longitudinal direction, and the adjuster is used to adjust institute State initial position of the liner relative to the rotating disk;The pressing member configuration is between a pair of adjuster.
Preferably, the clip-like component has four lug bosses protruded towards the support plate.
Preferably, the support plate has four contact sites for being contacted with the lug boss of the clip-like component Point, the contact portion is arranged on the front end face of the lug boss.
Preferably, the contact portion is from the laterally projecting of the main body of the support plate.
Preferably, the front end of the lug boss is with the contact portion for abutting, the side of the lug boss for The main body of the support plate abuts.
Preferably, a pair of adjuster is fixed on the upper end and lower end of the clip-like component by fixing bolt respectively Portion.
Preferably, the adjuster includes the liner clamp being fixed on by the fixing bolt on the clip-like component, phase The liner clamp is moved forward and backward with the liner is supported on the clip-like component the positioning pin, for pushing It states liner and leaves the resetting spring of the rotating disk and for adjusting between the gap between the liner and the rotating disk Gap adjustment member.
Preferably, the positioning pin is set as cylindrical shape.
Preferably, the positioning pin has the flange part for engaging with the support plate.
Preferably, the bottom of the positioning pin is protruded from the liner clamp, and the flange part is assembled to the bearing The both ends of plate are to support the liner.
Compared with the prior art, the present invention can control the flow velocity of the coolant flowed in cooling tube.
Description of the drawings
Fig. 1 is the present invention for the schematic diagram of device that is cooled down to fuel rod.
Fig. 2 is the present invention for the cooling tube in the device that is cooled down to fuel rod and the position of fuel rod to be cooled Put the schematic diagram of relationship.
Specific embodiment
With reference to figure 1 and Fig. 2, Fig. 1 be the present invention for the schematic diagram of device that is cooled down to fuel rod, Fig. 2 for Invention for the cooling tube and the schematic diagram of the position relationship of fuel rod to be cooled in the device that is cooled down to fuel rod.
The device for being used to cool down fuel rod of the present invention includes cooling tube 101, pumping chamber 102, rotating vane 103rd, motor 104, rotating disk 105, current velocity controller 106.The form of the cooling tube spirally is in nuclear power station Fuel rod 201 to be cooled, the cooling tube are used to cool down the fuel rod.
The pumping chamber includes the first opening and the second opening, the both ends of the cooling tube respectively with the institute of pumping chamber State the first opening and the second opening connection.
The rotating vane and one end of the rotary shaft of the motor are mutually fixed, and the rotating vane is used for around the rotation Shaft rotates, and the rotating vane is set in the pumping chamber.The motor is used to pump by the rotating vane The coolant being placed in the pumping chamber and the cooling tube.The coolant is water.
The rotating disk includes centre bore, and the rotary shaft passes through the centre bore and mutually fixed with the rotating disk.
Since rotating disk and rotating vane are fixed with rotary shaft, rotating disk is integrally rotated with rotating vane.
Current velocity controller in the rotating disk rotated together with rotating vane for applying frictional force, to control the rotation The rotating speed of rotating vane piece, so as to control the flow velocity of the coolant.
The current velocity controller include braced frame, via the clip-like component of braced frame bearing, liner, for supporting The support plate of liner, a pair are used to support the positioning pin of support plate in clip-like component and for passing through the pressure of compressed air By the pressing member of liner pressing on the rotating pan.
Current velocity controller is used to keep rotating disk from the both sides of rotating disk by a pair of of liner, passes through rotating disk and liner Between frictional force control rotating vane rotating speed.
Clip-like component includes the first clamp arm and the second clamp arm, and the first clamp arm and the second clamp arm are prolonged in a manner of across rotating disk It stretches, clip-like component further includes the yoke portion of the first clamp arm of connection and the second clamp arm and is used to support the cradle portion of clip-like component support Point.
The current velocity controller further includes the first sliding pin and the second sliding pin.Clip-like component is used to slide by first Pin and the second sliding pin are slided relative to braced frame.
First sliding pin and the second sliding pin are disposed through the state of braced frame.First sliding pin and the second sliding pin Two ends be connected respectively to the holder part of clip-like component.Clip-like component is supported frame support so that the first sliding pin It is axially relative to move each other with the second sliding pin.The exposed portion of first sliding pin and the second sliding pin is covered by rubber sleeve Lid.
Clip-like component has four lug bosses protruded towards support plate.Lug boss is arranged on clip-like component, is being supported Lug boss there are two being set on the clip-like component of two end side of length direction of plate.
Support plate has four contact portions for being contacted with the lug boss of clip-like component.Contact portion is arranged on protrusion The front end face in portion, so that each lug boss can contact.
When support plate moves backward, lug boss contacts the contact portion of support plate.
Lug boss is opposite with the side of support plate, and is formed between the side of support plate between preset space length Gap.When the positioning pin of the lower part of support plate is removed and support plate is supported and rotated by top positioning pin, support plate and branch The side surface contact of board.At this point, lug boss is used to limit rotation of the support plate relative to clip-like component.
The fit tolerance between gap-ratio positioning pin and support plate between lug boss and the side of support plate is big.In protrusion In the case that portion is abutted with the side of support plate, there are gaps between the diaphragm of pressing member and aftermentioned cylinder main body.
Lug boss and clip-like component integrally casting shaping, alternatively, lug boss is formed separately with clip-like component and lug boss It is bolted clip-like component.In addition, part or all of the front end of lug boss can be by rubber elastomeric material shape Into.It in this case, can be with shock absorbing when support plate is retracted and lug boss is contacted with contact portion.
Liner is used to contact with rotating disk in the pressing force of depressed component.Liner has the back of the body fixed to support plate Plate portion and the friction member against the rotating disk rotated together with rotating vane.Friction member is fixed on the surface of backboard portion. Liner controls the rotating speed of rotating vane by the frictional force generated by the abutting between friction member and rotating disk.
Support plate has the dovetail groove for being formed and being engaged with the backboard portion of liner along longitudinal direction.Positioned at the length direction of support plate On both ends be supported on clip-like component by a pair of of positioning pin.
Contact portion is formed as from the laterally projecting of the main body of support plate.The front end of lug boss is used to support with contact portion It connects, the side of lug boss is used to abut with the main body of support plate.
Clip-like component have configuration both ends in the longitudinal direction a pair of of adjuster and configuration a pair of of adjuster it Between pressing member.
Adjuster is used to adjust initial position of the liner relative to rotating disk.A pair of of adjuster is consolidated respectively by fixing bolt It is scheduled on the upper and lower end of clip-like component.
Adjuster include be fixed on clip-like component by fixing bolt liner clamp, relative to liner clamp move forward and backward with Positioning pin that liner is supported on clip-like component, for liner to be pushed to leave the resetting spring of rotating disk and for adjusting liner The lash adjustment member in the gap between rotating disk.
Positioning pin is set as cylindrical shape.Positioning pin has the flange part for engaging with support plate.The bottom of positioning pin It is protruded from liner clamp, and flange part is assembled to the both ends of support plate to support liner.
When liner is close to rotating disk, positioning pin is used to extract out from liner clamp by the support plate shifted together with liner And it is axially moveable.When liner and rotating disk sliding contact, positioning pin is for so that liner resistance rotating disk promotes liner to exist The active force moved on circumferencial direction.
Resetting spring and lash adjustment member are contained in the inner circumferential of positioning pin.Inner circumferential of the positioning pin near open end It is upper that there is plain washer.When being slided in positioning pin, the slipper being externally exposed is covered by rubber boot.
Resetting spring is compressed and is inserted into the inner circumferential of positioning pin.Resetting spring for pushing back liner so that liner with Rotating disk separates.
Lash adjustment member is used to that the recovery amount of liner to be adjusted to predetermined amount by the active force of resetting spring.Gap tune Whole component have the fixed pin being fixed on liner clamp, the handle that is set in a manner of being axially moveable relative to fixed pin and The lantern ring being axially moveable relative to fixed pin.
Positioning pin for being moved with the movement of support plate, and for plain washer against and press the platform of lantern ring Rank portion, at this point, handle is used to be axially moveable.Handle is additionally operable to grip the outer of pin by the active force of resetting spring Week.The handle moved along the direction that positioning pin moves will not be returned due to the bias force of resetting spring.
Abrasion in liner is smaller, and the path increment of positioning pin is smaller.Therefore, when positioning pin moves, plain cushion Circle is not contacted with the stage portion of lantern ring.
In the case where the abrasion of liner is larger, the path increment of positioning pin is larger, when positioning pin moves, plain washer against Stage portion and press lantern ring.Plain washer is dragged together with lantern ring and moving handle.Positioning pin is returned only to the movement with lantern ring Measure the position of identical amount.
Pressing member includes the cylinder body, the piston for retreating relative to cylinder body that are formed in clip-like component.Via support plate Liner is pushed, for piston for being abutted with the back side of clip-like component, and balancing gate pit is formed in clip-like component, pressing member passes through tune The indoor air pressure of seamless power makes diaphragm deflection, piston is made to be moved forward and backward relative to cylinder body by the deformation of diaphragm.Pressing member leads to It crosses the piston extracted out from cylinder body and pushes liner on the rotating pan via support plate.
Cylinder body has to guide the cylinder main body of piston back-and-forth motion, diaphragm, plate-shaped member.
Cylinder main body is formed as oval tubular, is surrounded around piston with ring-type.It is provided with and piston in the inner circumferential of cylinder main body Peripheral surface sliding contact and prevent the dustband of dust.
Plate-shaped member is formed as elliptical shape corresponding with cylinder main body.Plate-shaped member is fixed on cylinder main body by multiple bolts End face on.The inner surface of plate-shaped member forms the inner wall of balancing gate pit.Plate-shaped member and cylinder main body are integrally formed.
Diaphragm is used for through the indoor pressure of pressure and flexible deformation, so that piston moves.Diaphragm is outermost with being formed in The peripheral part in week, the bellows section for being formed in the press section of most inner circumferential and being formed continuously between peripheral part and press section.
Peripheral part is clamped and fixed between cylinder main body and plate-shaped member.Peripheral part is used to be sealed balancing gate pit, with Keep the air-tightness of balancing gate pit.
Bellows section is between the inner peripheral surface of cylinder main body and the peripheral surface of piston.When the pressure of balancing gate pit rises, Bellows section is used to expand from folded state and be deformed into extended configuration, and when the pressure of balancing gate pit declines, bellows Part is used for back to folded state.That is, bellows section is used to be deformed by being supplied to the air pressure of balancing gate pit Folded state or extended configuration.
Press section and piston contact, and the bellows section expansion folded, thus piston is in exporter's upward displacement.When When press section shifts, piston is pressed and is moved in cylinder body.
Balancing gate pit is limited to the inside of cylinder body by diaphragm and plate-shaped member.Balancing gate pit be used for its volume expansion and It shrinks and is moved forward and backward.Balancing gate pit is provided with through-hole.Compressed air for making diaphragm deflection passes through through-hole from external pressure source Input.
Piston is against the rear surface of support plate.Piston is maintained at by diaphragm in cylinder body.Piston has what is contacted with support plate Press surface and be formed in press surface opposite side and with the back side of membrane contacts.Piston is for passing through the diaphragm that is abutted with the back side It deforms and retreats in cylinder body.
Pressing member includes piston plate, and piston plate is slidably supported on positioning pin.
Piston plate is arranged in parallel with support plate.Piston plate is moved with piston for shifting and being parallel to support plate together.It is living Seben is integrally formed with piston, alternatively, piston plate can be formed separately with piston, and piston is fixed to piston plate.
Piston plate has pair of sliding hole, and positioning pin is inserted at two longitudinal ends in the sliding eye.Piston plate is with inserting Enter the positioning pin engaging into sliding eye, and be arranged along the state in axial sliding of positioning pin.Piston plate is used for by making The sliding eye at both ends engages the position to limit piston in cylinder body with positioning pin.
When the flow velocity to coolant controls, the compressed air supplied from external pressure source is admitted to pressure via through-hole Power room, makes diaphragm deflection.Also, the bellows section expansion of diaphragm, press section are used to that piston to be made to slide towards rotating disk.
The press section of diaphragm presses liner on the rotating pan via piston.When being resisted against rotation by the liner that diaphragm presses On disk and when generating frictional force, the spin down of rotating vane.
The indoor compressed air of pressure is discharged from through-hole, before the rotating speed of control rotating disk, the bellows section of diaphragm Revert to collapsed shape.
Lash adjustment member is for so that rotating disk and liner keep predetermined space.Therefore, rotating vane can not be flowed The influence of velocity control device and rotate.
Liner is inserted into the dovetail groove of support plate.Two ends of liner engage respectively with positioning pin, go out branch to prevent on-slip Board.
When the wear extent of the friction member of liner is greater than or equal to predetermined value, lash adjustment member is for so that support plate Distance corresponding with the wear extent of friction member is moved towards rotating disk.When needing replacing new liner, lash adjustment member For support plate to be pushed back to initial position.At this point, lug boss is abutted with contact portion, between existing between diaphragm and plate-shaped member Gap.
In a state that piston is retracted and clamps diaphragm, piston will not be collided with plate-shaped member.Accordingly it is possible to prevent do not conform to The power of reason is acted on the mechanical part of current velocity controller, so as to improve safety during more renewal of facing.
Through the above technical solutions, the present invention can control the flow velocity of the coolant flowed in cooling tube.
In conclusion although the present invention is disclosed above with preferred embodiment, above preferred embodiment is not to limit The system present invention, those of ordinary skill in the art without departing from the spirit and scope of the present invention, can make various changes and profit Decorations, therefore protection scope of the present invention is subject to the range that claim defines.

Claims (10)

  1. A kind of 1. device for being cooled down to fuel rod, which is characterized in that the dress for being cooled down to fuel rod It puts including cooling tube, pumping chamber, rotating vane, motor, rotating disk, current velocity controller;
    The form of the cooling tube spirally is used for around fuel rod to be cooled in nuclear power station, the cooling tube to the combustion Charge bar is cooled down;
    The motor is used for the cooling being placed in by rotating vane pumping in the pumping chamber and the cooling tube Liquid;
    The current velocity controller in the rotating disk rotated together with the rotating vane for applying frictional force, with control The rotating speed of the rotating vane is made, so as to control the flow velocity of the coolant;
    The current velocity controller includes clip-like component, a pair of of liner, a pair of of positioning pin, the support plate for supporting the liner And the pressing member in the rotating disk is pressed against for passing through the pressure of compressed air by the liner;
    Both ends on the length direction of the support plate are supported on by a pair of positioning pin on the clip-like component;
    The clip-like component has a pair of of adjuster at the both ends of configuration in the longitudinal direction, and the adjuster is used to adjust institute State initial position of the liner relative to the rotating disk;
    The pressing member configuration is between a pair of adjuster.
  2. 2. the device according to claim 1 for being cooled down to fuel rod, which is characterized in that the clip-like component tool There are four lug bosses protruded towards the support plate.
  3. 3. the device according to claim 2 for being cooled down to fuel rod, which is characterized in that the support plate has For four contact portions contacted with the lug boss of the clip-like component, the contact portion is arranged on the lug boss Front end face.
  4. 4. the device according to claim 3 for being cooled down to fuel rod, which is characterized in that the contact portion from The main body of the support plate it is laterally projecting.
  5. 5. the device according to claim 3 for being cooled down to fuel rod, which is characterized in that before the lug boss For being abutted with the contact portion, the side of the lug boss is used to abut with the main body of the support plate at end.
  6. 6. the device according to claim 1 for being cooled down to fuel rod, which is characterized in that a pair of adjuster The upper and lower end of the clip-like component is fixed on by fixing bolt respectively.
  7. 7. the device according to claim 6 for being cooled down to fuel rod, which is characterized in that the adjuster includes The liner clamp that is fixed on the clip-like component by the fixing bolt is moved forward and backward relative to the liner clamp with described in inciting somebody to action The positioning pin that liner is supported on the clip-like component, for the liner to be pushed to leave the resetting spring of the rotating disk And the lash adjustment member for adjusting the gap between the liner and the rotating disk.
  8. 8. the device according to claim 1 for being cooled down to fuel rod, which is characterized in that the positioning pin setting For cylindrical shape.
  9. 9. the device according to claim 1 for being cooled down to fuel rod, which is characterized in that the positioning pin has For the flange part engaged with the support plate.
  10. 10. the device according to claim 9 for being cooled down to fuel rod, which is characterized in that the positioning pin Bottom is protruded from the liner clamp, and the flange part is assembled to the both ends of the support plate to support the liner.
CN201711302062.8A 2017-12-10 2017-12-10 For the device cooled down to fuel rod Withdrawn CN108231215A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711302062.8A CN108231215A (en) 2017-12-10 2017-12-10 For the device cooled down to fuel rod

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711302062.8A CN108231215A (en) 2017-12-10 2017-12-10 For the device cooled down to fuel rod

Publications (1)

Publication Number Publication Date
CN108231215A true CN108231215A (en) 2018-06-29

Family

ID=62654047

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711302062.8A Withdrawn CN108231215A (en) 2017-12-10 2017-12-10 For the device cooled down to fuel rod

Country Status (1)

Country Link
CN (1) CN108231215A (en)

Similar Documents

Publication Publication Date Title
CN208252794U (en) A kind of motor-driven valve
CN208951128U (en) A kind of lubrication bearing
JPS6014179B2 (en) internal combustion engine fuel injection pump
CN108231215A (en) For the device cooled down to fuel rod
CN108286869A (en) Cooling device
CN108231221A (en) For the equipment cooled down to fuel rod
CN108257688A (en) Suitable for the cooling device of nuclear power station
CN108206609A (en) Generator cools down equipment
CN108252931A (en) Engine cooler
CN108253824A (en) Cool down equipment
CN108597624A (en) Cooling equipment suitable for nuclear power station
JP2015212522A (en) Swash plate type fluid pressure rotary machine and process of manufacturing the same
CN108178199A (en) Sewage disposal device
JP5920645B2 (en) Energy recovery axial plunger pump
CN102996740B (en) Screw driving mechanism for micro plunger pump and the micro plunger pump
CN108178198A (en) For the device of treated sewage
CN205745393U (en) A kind of self-operated flow regulator
CN108128818A (en) Sewage purifier
CN108547897B (en) A kind of vertical and lateral pressure damper
CN108163907A (en) For the device handled sewage
CN108191015A (en) For the equipment handled sewage
CN108163908A (en) For the equipment of treated sewage
CN102913408A (en) Bent axis type plunger hydraulic pump/motor
CN204368374U (en) Bicycle use active height adjustable seat pipe
CN108002471A (en) Effluent treatment plant

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication

Application publication date: 20180629

WW01 Invention patent application withdrawn after publication