CN105606310B - A kind of special water inlet of the cylinder body water pressure test and exhaust apparatus - Google Patents
A kind of special water inlet of the cylinder body water pressure test and exhaust apparatus Download PDFInfo
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- CN105606310B CN105606310B CN201510988786.7A CN201510988786A CN105606310B CN 105606310 B CN105606310 B CN 105606310B CN 201510988786 A CN201510988786 A CN 201510988786A CN 105606310 B CN105606310 B CN 105606310B
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- water inlet
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
Abstract
The present invention provides a kind of special water inlet of cylinder body water pressure test and exhaust apparatus, centre are provided with the upper cover plate of first exhaust cavity, centre is provided with the lower cover of screw cavity, be provided with air cavity and the water inlet gas deflation assembly of inlet opening, the intermediate connecting screw for being provided with second exhaust cavity and centre are provided with the outlet pipe for being discharged cavity；Gas deflation assembly of intaking is mounted between upper cover plate and lower cover, and by being welded to connect；First through hole and the second through-hole are additionally provided with, and connect air cavity respectively in the water inlet gas deflation assembly；Connecting screw, which is fixed on lower cover, to be connected through a screw thread；Outlet pipe is extended through from top to bottom into after water gas deflation assembly, lower cover and connecting screw, and connecting screw bottom is stretched out in lower end.The purpose that the present invention only need to intake and be vented simultaneously when processing a fabrication hole on cylinder body and can be realized and doing the water pressure test avoids the skill screw holes that go into operation on cylinder body more, ideal in terms of service condition, has reached test objective and requirement.
Description
Technical field
The present invention relates to the special water inlet of water test unit technical field more particularly to a kind of cylinder body water pressure test and exhausts
Device.
Background technology
In the prior art, 2 technique screw holes are processed when doing the water pressure test of cylinder body on cylinder body, be respectively used into water and
Exhaust.After the test, this 2 technique screw holes will be blocked again.Some cylinder bodies are smaller, can only process a hole, in this way
Just difficulty is increased to our experiment or even can not be tested.In order to ensure cylinder body (such as steam turbine, pump case)
Air-tightness, cylinder body will do the water pressure test after finishing, and cylinder body half is merged up and down, and each nozzle is sealed with closure plate,
Drive water hole and gas vent on cylinder body into, inlet opening is used to tap water squeezing into inner chamber of cylinder block, and gas vent is used for inner chamber of cylinder block
Air discharges (gas vent should be processed in the top of cylinder body, can thus drain the air of inner chamber of cylinder block to greatest extent), air
Pressure gauge is connect after emptying again, and is continued toward cylinder body internal pump water, keeps having certain pressure in cylinder body, observation a period of time, cylinder body
It is water-tight to prove that cylinder body air-tightness is qualified.Some cylinder bodies are smaller, a hole can only be opened when doing the water pressure test, this hole was both
It intakes air-discharging again, also to connect pressure gauge, a hole is needed to be mostly used.
Chinese patent CN103558090A discloses a kind of single seam crossing water test unit of major diameter bearing pipe,
It is characterized in that：Including interior retainer ring (2), top firmware (3), pressure-bearing steel ring (5), water feed apparatus (6), exhaust apparatus (7) and solely
Erect the sealing ring (4) put；The top firmware (3) includes top plate (31) and fastening bolt (35), top plate (31) setting
On the inner wall of the pressure-bearing steel ring (5), one end of the fastening bolt (35) is arranged on the top plate (31), on the other end
Equipped with matched nut (34)；The interior retainer ring (2) is fixed by the fastening bolt (35) and nut (34)
In the inside of the pressure-bearing steel ring (5)；The water feed apparatus (6) includes the first top plate (61), first sleeve (62) and power
Device；First top plate (61) is fixed on the inner wall of the pressure-bearing steel ring (5)；One end of the first sleeve (62)
It is fixed on first top plate (61), the other end is connect with the power plant；First top plate (61), sealing ring (4)
And it is equipped with the first hole communicated with the inside of the first sleeve (62) on the pressure-bearing steel ring (5)；The power plant
Pressure gauge is equipped between the first sleeve (62)；The exhaust apparatus (7) includes the second top plate (71) and the second casing
(72)；Second top plate (71) is fixed on the inner wall of the pressure-bearing steel ring (5)；One end of second casing (72)
It is fixed on second top plate (11), the other end is equipped with sealing device (73)；Second top plate (71), sealing ring (4) with
And the second hole communicated with the inside of second casing (72) is equipped on the pressure-bearing steel ring (5).The technical solution is main
What is solved is the water pressure test of single seam crossing, and passed examination refers to foreign in pipeline, pipe joint without damaged and rubber
Cushion rubber without deformation and without fracture the problem of rather than check cylinder body the water pressure test.
Chinese patent CN202350993U discloses a kind of fluid power and pushes hydrostatic testing machine, it is characterised in that：It sets four
Even lower platform (7) and upper pallet (3) form braced frame to support column (8), and lower pressure disc (4), the pressure disc are embedded on lower platform
Peripheral hardware retaining ring (15), connection bucket (6) under the lower platform set pressure testing pipe (16) among above-mentioned lower pressure disc, and pipe extraction connects
Bucket；Hydraulic cylinder (14) is set in the upper decoration cover (13) of the present apparatus, cylinder body is on above-mentioned upper pallet (3), cylinder body top
Equipped with hydraulic joint (1), there is piston (12) in cylinder, piston passes through upper pallet, and its underpart connects pressure disc (9), the position of the pressure disc
It puts between upper pallet and lower platform；Pressure gauge is filled in the outside of upper pallet, above-mentioned table connects pumping plant and hydraulic cylinder by the road.The skill
Art scheme tests the valve of multiple caliber, does not solve the problems, such as that one hole of the cylinder body water pressure test is multi-purpose, this requires
We design a device to meet the requirement that a hole is mostly used.
Invention content
2 technique screw holes are processed during to overcome the water pressure test in the prior art on cylinder body, and cylinder body is smaller,
A problem of hole can only be processed, thus difficulty is increased to our experiment or even can not be tested, the present invention carries
A kind of special water inlet of cylinder body water pressure test and exhaust apparatus are supplied.
The technical solution adopted by the present invention is：A kind of special water inlet of the cylinder body water pressure test and exhaust apparatus, innovative point exist
In：Centre is provided with the upper cover plate of first exhaust cavity, centre is provided with the lower cover of screw cavity, is provided with air sky
Chamber and the water inlet gas deflation assembly of inlet opening, centre is provided with the connecting screw of second exhaust cavity and centre is provided with water outlet cavity
Outlet pipe；The water inlet gas deflation assembly is mounted between upper cover plate and lower cover, and by being welded to connect；The water inlet exhaust group
First through hole and the second through-hole are additionally provided in part, and connects air cavity respectively；The connecting screw is fixed on lower cover
It is connected through a screw thread；The outlet pipe is extended through from top to bottom into after water gas deflation assembly, lower cover and connecting screw, and lower end is stretched
Go out connecting screw bottom.
On this basis, the upper cover plate global shape that the centre is provided with first exhaust cavity is with center line pair
The convex body of title, the first exhaust cavity are set among convex body, and symmetrical with the center line of convex body.
On this basis, the water inlet gas deflation assembly generally cuboid for being provided with air cavity and inlet opening, and with
Own level center line is symmetric body.
On this basis, the inlet opening of the water inlet gas deflation assembly is arranged on cuboid side, and with the water of cuboid
Flat center line is into axial symmetry.
On this basis, the air cavity of the water inlet gas deflation assembly is divided into air cavity and lower air cavity, on this
Air cavity is set to above cuboid, and lower air cavity is set to below cuboid；First is set in the lower air cavity
Through-hole, the first through hole are connected with inlet opening, and the second through-hole, second through-hole and upper air cavity are connected in the first through hole
Connection.
On this basis, the inlet opening is set as 3 parts, respectively first inlet segment, middle inlet segment and top；It is described
First inlet segment is connected with the perforation of middle inlet segment, and middle inlet segment is fixedly connected with top；It is described just inlet segment aperture be more than in into
The aperture of water section, and the just length for being shorter in length than middle inlet segment of inlet segment.
On this basis, the centre is provided with the lower cover generally cuboid of screw cavity, and with center line
For symmetric body；The screw cavity is symmetrical arranged using the center line as symmetry axis.
On this basis, the centre be provided with the connecting screw of second exhaust cavity integrally in " in " font, including spiral shell
Head, screw rod body and screw rod tail, the screw head, screw rod body and screw rod tail are integrally formed, and with center line into axial symmetry；Institute
Second exhaust cavity is stated also to set into axial symmetry with the center line.
On this basis, be provided with fixed platform between the screw rod body and screw rod tail, the fixed platform and screw rod body and
Screw rod tail is integrally formed, and the width of the fixed platform is shorter than the width of screw rod body and is longer than the width of screw rod tail, and three is in totally
" ladder " shape.
On this basis, the centre is provided with the outlet pipe generally cuboid of water outlet cavity, and with center line
Into axial symmetry；The water outlet cavity is also set with the center line into axial symmetry.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) the special water inlet of the cylinder body water pressure test of the invention and exhaust apparatus, including upper cover plate, lower cover, water inlet exhaust
Component, connecting screw and outlet pipe, component is simple, and a fabrication hole need to be only processed on cylinder body can be realized and do hydraulic pressure examination
The purpose intake and be vented simultaneously when testing avoids the skill screw holes that go into operation on cylinder body more, ideal in terms of service condition, reaches
Test objective and requirement will process 2 technique screw holes on cylinder body, be respectively used into water when solving the water pressure test for doing cylinder body
The problem of with exhaust.
(2) the special water inlet of the cylinder body water pressure test and exhaust apparatus, flow of the invention enter cylinder body chamber, due to air ratio
Again lighter than water, water just squeezes out gap of the air between outlet pipe and connecting screw after entering, into " lower air chamber ", then
Enter " upper air chamber " from 2 through-holes between upper and lower air chamber, then discharged from gas vent, operation principle is simple, when seeing
To have water from gas vent discharge when, show that the air in cylinder body is completely expelled, be skillfully constructed, be simple in structure, is easy to use, into
This is cheap.
(3) the special water inlet of the cylinder body water pressure test and exhaust apparatus, inlet opening of the invention are set as 3 parts, respectively
First inlet segment, middle inlet segment and top；First inlet segment is connected with the perforation of middle inlet segment, and middle inlet segment is fixedly connected with top；Just
The aperture of inlet segment is more than the aperture of middle inlet segment, and the just length for being shorter in length than middle inlet segment of inlet segment；By first inlet segment
Aperture be set greater than the aperture of middle inlet segment, realize that flow is larger at the beginning, flow becomes smaller during inlet segment in, increase
Flow mobilization dynamic so that after larger power is obtained before into cylinder body, be conducive to enter timely rapidly exclusion cylinder body in cylinder body
Interior air has larger implementation result.
(4) the special water inlet of the cylinder body water pressure test of the invention and exhaust apparatus, centre are provided with the company of second exhaust cavity
Connect screw rod integrally in " in " font, including screw head, screw rod body and screw rod tail, the screw head, screw rod body and screw rod tail one into
Type.The screw rod body of middle section is set and is widened than screw head and screw rod tail, is conducive to increase the stress surface of connecting screw entirety
Product after cylinder body is sealed, the present apparatus is screwed in the screw hole processed in advance and in diaphragm seal sealing and screwing operations, is made
It obtains device to be more uniformly stressed, and ensures during carrying out the water pressure test, the stability and tolerance of device.
Description of the drawings
Fig. 1 is the special water inlet of the cylinder body water pressure test of the present invention and vent mechanism principle schematic；
Fig. 2 is the special water inlet of the cylinder body water pressure test of the present invention and exhaust apparatus upper cover plate structure schematic diagram；
Fig. 3 is the special water inlet of the cylinder body water pressure test of the present invention and exhaust apparatus water inlet gas deflation assembly structure diagram；
Fig. 4 is the special water inlet of the cylinder body water pressure test of the present invention and exhaust apparatus lower cover plate structure schematic diagram；
Fig. 5 is the special water inlet of the cylinder body water pressure test of the present invention and exhaust apparatus connecting screw structure diagram；
Fig. 6 is the special water inlet of the cylinder body water pressure test of the present invention and exhaust apparatus service branch structure schematic diagram；
Fig. 7 is the special water inlet of the cylinder body water pressure test of the present invention and the sectional view of the screw rod body of exhaust apparatus connecting screw.
Specific embodiment
Below in conjunction with drawings and examples, the present invention will be described in further detail.It should be appreciated that described herein
Specific embodiment only to explain the present invention, is not intended to limit the present invention.
The specific embodiment of the present invention as shown in figs. 1 to 6 is as follows：A kind of special water inlet of the cylinder body water pressure test with
Exhaust apparatus, including centre be provided with the upper cover plate 1 of first exhaust cavity 10, the intermediate lower cover 3 for being provided with screw cavity 30,
It is provided with the water inlet gas deflation assembly 2 of air cavity and inlet opening 23, intermediate 4 and of connecting screw for being provided with second exhaust cavity 40
Centre is provided with the outlet pipe 5 of water outlet cavity 50；Gas deflation assembly 2 of intaking is mounted between upper cover plate 1 and lower cover 3, and pass through
200 connection of welding；241 and second through-hole 242 of first through hole is additionally provided in the water inlet gas deflation assembly 2, and connects air respectively
Cavity；Connecting screw 4, which is fixed on lower cover 3, to be connected through a screw thread；Outlet pipe 5 is extended through from top to bottom into water gas deflation assembly
2nd, after lower cover 3 and connecting screw 4,4 bottom of connecting screw is stretched out in lower end.
As shown in Figure 2：1 global shape of upper cover plate that centre is provided with first exhaust cavity 10 is symmetrical with center line
Convex body, first exhaust cavity 10 is set among convex body, and symmetrical with the center line of convex body.
As shown in Figure 3：The generally cuboid of water inlet gas deflation assembly 2 of air cavity and inlet opening 23 is provided with, and with certainly
Body horizontal center line is symmetric body；The inlet opening 23 of water inlet gas deflation assembly 2 is arranged on cuboid side, and with the level of cuboid
Center line is into axial symmetry.
As shown in Figure 3：The air cavity of water inlet gas deflation assembly 2 is divided into air cavity 21 and lower air cavity 22, on this
Air cavity 21 is set to above cuboid, and lower air cavity 22 is set to below cuboid；Is set in lower air cavity 22
One through-hole 241, the first through hole 241 are connected with inlet opening 23, and the second through-hole 242, the second through-hole are connected in the first through hole 241
242 connect with upper air cavity 21.
As shown in Figure 3：Inlet opening 23 is set as 3 parts, respectively first inlet segment 231, middle inlet segment 233 and top
232；First inlet segment 231 is connected with the perforation of middle inlet segment 233, and middle inlet segment 233 is fixedly connected with top 232；First inlet segment 231
Aperture be more than middle inlet segment 233 aperture, and just inlet segment 231 the length for being shorter in length than middle inlet segment 233.
As shown in Figure 4：Centre is provided with the generally cuboid of lower cover 3 of screw cavity 30, and using center line as
Symmetric body；Screw cavity 30 is symmetrical arranged using the center line as symmetry axis.
As shown in Figure 5：Centre be provided with second exhaust cavity 40 connecting screw 4 it is whole in " in " font, including screw rod
First 41, screw rod body 42 and screw rod tail 43, the screw head 41, screw rod body 42 and screw rod tail 43 are integrally formed, and with center line
Into axial symmetry；Second exhaust cavity 40 is also set with the center line into axial symmetry.
As shown in Figure 5：Fixed platform 44 is provided between screw rod body 42 and screw rod tail 43, the fixed platform 44 and screw rod body
42 and screw rod tail 43 be integrally formed, the width of the fixed platform 44 is shorter than the width of screw rod body 42 and is longer than the width of screw rod tail 43
Degree, three is totally in " ladder " shape, in the present embodiment, as shown in Figure 7：The cross-sectional shape of screw rod body 42 is regular hexagon.
It as the further preferred of the present embodiment, is connected, and held by fine thread between connecting screw 4 and lower cover 3
Face is additionally provided with O-ring seal sealing.
As shown in Figure 6：Centre be provided with water outlet cavity 50 the generally cuboid of outlet pipe 5, and with center line into
Axial symmetry；Cavity 50 is discharged also to set into axial symmetry with the center line.
Referring to Fig. 1, the operation principle of the present apparatus：After cylinder body 100 is sealed, the present apparatus is screwed in into cylinder body 100 and is processed in advance
It seals, screws in the screw hole gone out and with diaphragm seal.Then water pump water pipe is connected at a of inlet opening 23, opens water pump to device
Inside pour water, flow enters chamber by water pump water pipe, since air specific weight is lighter than water, water enter after just by air from outlet pipe 5
Gap squeezes out at b1 and b2 two between connecting screw 4, into " lower air chamber 22 ", then from upper and lower two air chambers
Between 241 and second through-hole 242 of first through hole enter " upper air chamber 21 ", then summarize the discharge from gas vent b at.When seeing
When thering is the water to be discharged at gas vent b, show that the air in cylinder body 100 is completely expelled, at this time fill pressure gauge at gas vent
On, continue to pump in cylinder body at c by the hydraulic pressure value of design requirement, after being kept for certain time water-tight, experiment can tie
Beam.
The preferred embodiment of the present invention has shown and described in above description, as previously described, it should be understood that the present invention is not office
Be limited to form disclosed herein, be not to be taken as the exclusion to other embodiment, and available for various other combinations, modification and
Environment, and can be changed in the scope of the invention is set forth herein by the above teachings or related fields of technology or knowledge
It is dynamic.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, then it all should be appended by the present invention
In scope of the claims.
Claims (8)
1. a kind of special water inlet of the cylinder body water pressure test and exhaust apparatus, it is characterised in that：Centre is provided with first exhaust sky
The upper cover plate (1) of chamber (10), centre are provided with the lower cover (3) of screw cavity (30), are provided with air cavity and inlet opening
(23) water inlet gas deflation assembly (2), centre are provided with the connecting screw (4) of second exhaust cavity (40) and centre is provided with water outlet
The outlet pipe (5) of cavity (50)；The water inlet gas deflation assembly (2) passes through between upper cover plate (1) and lower cover (3)
It is welded to connect；First through hole (241) and the second through-hole (242) are additionally provided in the water inlet gas deflation assembly (2), and connection is empty respectively
Gas cavity；The connecting screw (4), which is fixed on lower cover (3), to be connected through a screw thread；The outlet pipe (5) is distinguished from top to bottom
After water inlet gas deflation assembly (2), lower cover (3) and connecting screw (4), connecting screw (4) bottom is stretched out in lower end；The setting
There is water inlet gas deflation assembly (2) the generally cuboid of air cavity and inlet opening (23), and be symmetrical using own level center line
Body；The air cavity of the water inlet gas deflation assembly (2) is divided into air cavity (21) and lower air cavity (22), and air is empty on this
Chamber (21) is set to above cuboid, and lower air cavity (22) is set to below cuboid；It is set on the lower air cavity (22)
First through hole (241) is put, which connects with inlet opening (23), and the second through-hole is connected in the first through hole (241)
(242), second through-hole (242) connects with upper air cavity (21).
2. the special water inlet of the cylinder body water pressure test according to claim 1 and exhaust apparatus, it is characterised in that：The centre is set
Upper cover plate (1) global shape for being equipped with first exhaust cavity (10) is with the symmetrical convex body of center, the first row
Gas cavity (10) is set among convex body, and symmetrical with the center line of convex body.
3. the special water inlet of the cylinder body water pressure test according to claim 1 and exhaust apparatus, it is characterised in that：The water inlet
The inlet opening (23) of gas deflation assembly is arranged on cuboid side, and with the horizontal center line of cuboid into axial symmetry.
4. the special water inlet of the cylinder body water pressure test and exhaust apparatus according to claim 1 or 3, it is characterised in that：It is described into
Water hole (23) is set as 3 parts, respectively just inlet segment (231), middle inlet segment (233) and top (232)；It is described just to intake
Section (231) is connected with middle inlet segment (233) perforation, and middle inlet segment (233) is fixedly connected with top (232)；The just inlet segment
(231) aperture is more than the aperture of middle inlet segment (233), and the just length for being shorter in length than middle inlet segment (233) of inlet segment (231)
Degree.
5. the special water inlet of the cylinder body water pressure test according to claim 1 and exhaust apparatus, it is characterised in that：The centre is set
Lower cover (3) the generally cuboid of screw cavity (30) is equipped with, and using center line as symmetric body；The screw cavity
(30) it is symmetrical arranged using the center line as symmetry axis.
6. the special water inlet of the cylinder body water pressure test according to claim 1 and exhaust apparatus, it is characterised in that：The centre is set
Be equipped with second exhaust cavity (40) connecting screw (4) integrally in " in " font, including screw head (41), screw rod body (42) and spiral shell
Bar tail (43), the screw head (41), screw rod body (42) and screw rod tail (43) are integrally formed, and with center line into axial symmetry；
The second exhaust cavity (40) is also set with the center line into axial symmetry.
7. the special water inlet of the cylinder body water pressure test according to claim 6 and exhaust apparatus, it is characterised in that：The screw rod body
(42) fixed platform (44) is provided between screw rod tail (43), the fixed platform (44) and screw rod body (42) and screw rod tail (43)
It is integrally formed, the width of the fixed platform (44) is shorter than the width of screw rod body (42) and is longer than the width of screw rod tail (43), three
Overall is in " ladder " shape.
8. the special water inlet of the cylinder body water pressure test according to claim 1 and exhaust apparatus, it is characterised in that：The centre is set
Outlet pipe (5) the generally cuboid of water outlet cavity (50) is equipped with, and with center line into axial symmetry；The water outlet cavity
(50) it is also set with the center line into axial symmetry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510988786.7A CN105606310B (en) | 2015-12-24 | 2015-12-24 | A kind of special water inlet of the cylinder body water pressure test and exhaust apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510988786.7A CN105606310B (en) | 2015-12-24 | 2015-12-24 | A kind of special water inlet of the cylinder body water pressure test and exhaust apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105606310A CN105606310A (en) | 2016-05-25 |
| CN105606310B true CN105606310B (en) | 2018-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510988786.7A Active CN105606310B (en) | 2015-12-24 | 2015-12-24 | A kind of special water inlet of the cylinder body water pressure test and exhaust apparatus |
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| CN (1) | CN105606310B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441719B (en) * | 2016-09-29 | 2020-04-28 | 武汉船用机械有限责任公司 | Pump pressure frock of pneumatic cylinder body |
| CN109752147B (en) * | 2018-12-07 | 2021-07-06 | 四川中车玉柴发动机股份有限公司 | Cam hole oil duct hydrostatic test frock |
| CN113984393A (en) * | 2021-09-18 | 2022-01-28 | 中信重工机械股份有限公司 | Exhaust device for steam turbine cylinder hydrostatic test |
| CN114068047B (en) * | 2021-11-15 | 2022-11-08 | 中核检修有限公司 | Auxiliary water inlet device for hydrostatic test |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2443362Y (en) * | 2000-09-22 | 2001-08-15 | 洪声礼 | Integrated pipe for filling water and exhausting |
| CN202041358U (en) * | 2011-04-29 | 2011-11-16 | 南通赛孚机械设备有限公司 | Hydrostatic testing tool for pressure container |
| KR20140137090A (en) * | 2013-05-22 | 2014-12-02 | 현대중공업 주식회사 | Apparatus for checking water pressure of propeller cap for ship |
| CN204789163U (en) * | 2015-07-08 | 2015-11-18 | 安徽明腾永磁机电设备有限公司 | Hydrostatic test seals air bleeder |
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| CN105606310A (en) | 2016-05-25 |
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Address after: 226000, No. 666, Zhong Xiu Dong Lu, Jiangsu, Nantong Patentee after: Jintongling Technology Group Co., Ltd. Address before: 226000, No. 666, Zhong Xiu Dong Lu, Jiangsu, Nantong Patentee before: Jiangsu Jintongling Fluid Machinery Technology Co., Ltd. |
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