CN203443859U - Automatic water pressure tester for metal pipe - Google Patents
Automatic water pressure tester for metal pipe Download PDFInfo
- Publication number
- CN203443859U CN203443859U CN201320573009.2U CN201320573009U CN203443859U CN 203443859 U CN203443859 U CN 203443859U CN 201320573009 U CN201320573009 U CN 201320573009U CN 203443859 U CN203443859 U CN 203443859U
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- metal tube
- hydraulic pressure
- socket
- hydraulic
- hair
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Abstract
The utility model discloses an automatic water pressure tester for a metal pipe, and relates to the technical field of tester for pressure generated by water pressure or liquid pressure. The automatic water pressure tester for the metal pipe comprises a hydraulic system, a socket baffle wall, a socket pushing head, a faucet end stopper, a faucet baffle wall, a water pressure system, an electric control cabinet and a metal pipe conveying device, wherein the hydraulic system, a hydraulic control water valve, the water pressure system and the metal pipe conveying device are all controlled by the electric control cabinet; according to different metal pipe diameters, the electric control cabinet gives different control instructions, so that the socket pushing head obtains gradually-strengthened pre-tightening force to satisfy the water pressure test requirement under the condition of the pipe diameter. The automatic water pressure tester for the metal pipe can achieve a water pressure experiment, which is free from type modification, has multiple specifications and is automatic and unattended, improves working efficiency, and is particularly suitable for a full-automatic production line.
Description
Technical field
The utility model relates to the pressure experiment device technique field being produced by hydraulic pressure or hydraulic pressure, relates in particular to a kind of metal tube hydraulic pressure automatic testing machine.
Background technology
In order to guarantee quality and the mechanical property of metal tube, metal tube must carry out the hydraulic testing by root pressure in accordance with regulations, to the underproof pipe of the hydraulic testing, finds out the reason of suppressing defective formation, effectively carries out production control; And for the metal tube of different tube diameters, the pressure criteria of the hydraulic testing is also different.The device systems of at present traditional metal tube hydrostatic testing machine is comprised of barricade, pull bar, base, socket plug, bellmouth plug and hydraulic system and hydraulic pressure system.Principle of work during this traditional hydrostatic testing machine water pressure testing has two kinds, a kind of is to compress metal tube by the socket plug total head of hydraulic oil cylinder driving, pressure is greater than metal tube water pressure testing top pressure, and the subject matter of this hydrostatic testing machine is that the O-ring seal on socket is cut somebody's hair is short serviceable life.
Meanwhile, the hydraulic testing of existing hydrostatic testing machine is that the socket plug that directly will float is blocked socket port, and then hydraulic pressure directly rises to maximal value, and when pipeline has larger defect, this way likely causes pipeline burst, may cause casualties and property loss.And, owing to directly hydraulic pressure being risen to maximal value, therefore, must suppress beginning and just make hydraulic mechanism that socket is cut somebody's hair and risen to maximum with the sealing snap-in force of bellmouth plug, obviously, from the beginning, socket cut somebody's hair and the seal of bellmouth plug just under High Pressure, that is to say, whole, suppress in test process, seal is under High Pressure for a long time, and this greatly reduces the serviceable life of seal.During beginning, inner pipe water pressure does not rise to maximum very soon, therefore, at this moment concerning hermetically-sealed construction, when especially hydraulic pressure has just started to suppress, just there is a very large pressure differential, from practical application, can find that this large pressure differential also easily causes seal to damage, and reduces the serviceable life of seal.
Another kind of hydrostatic testing machine is the socket plug low pressure pretension metal tube that adopts hydraulic oil cylinder driving, by hydraulic system, make oil cylinder self-locking, socket is cut somebody's hair and is adopted the structure of air supported head, when to metal tube water pressure testing, unsteady the cutting somebody's hair of socket can be according to the big or small automatic impaction metal tube of metal tube water pressure testing, the subject matter of this hydrostatic testing machine is to change the socket plug that floats according to the size of metal tube caliber, can not mix pipe water pressure testing.Therefore there is following problem in these two kinds of traditional hydrostatic testing machines on automatic production line: 1, can not realize according to the big or small auto-watering of caliber and pressing; 2, the metal tube that can not realize different tube diameters mixes to be suppressed; 3, in the process of suppressing at the metal tube that carries out different tube diameters, because socket plug is designed to the plug that floats, must change socket plug according to the difference of suppressing specification, cause inefficiency; 4, need someone take care of, security is not high.
Chinese patent literature CN201561892U discloses a kind of pressure closure plate, as shown in Figure 1-2, is suppressing the closure plate 13 wide spill seal groove 3 different with offering diameter on piston 1, can adapt to like this hydraulic pressure test of the valve test specimen of different size.Although the pressure closure plate of CN 201561892U can adapt to the valve test specimen of different size, but its hermetically-sealed construction is by offering seal groove on closure plate 13 and piston 1 and form suppressing, the method of this formation hermetically-sealed construction needs first working groove, the encapsulants such as O-ring seal are set in groove again, complex procedures reduces the intensity of suppressing closure plate 13 and piston 1 simultaneously.And, it also can only adapt to the hydraulic pressure test of the valve test specimen of three kinds of different sizes, for those specifications and seal groove diameter inconsistent valve test specimen all, cannot realize hydraulic pressure test, must change and suppress closure plate 13 and piston 1, there is problem common in foregoing prior art in this equally.Another problem is that, owing to having adopted piston type closure plate, the sealing problem between piston 1 and piston bush 2 needs to solve equally.
Although Chinese patent literature CN2634464Y points out that it passes through the operation that computer is controlled high pressure water pressure test machine automatically, it does not describe the implementer's case about automatic operation.Simultaneously, to the process of suppressing in steel pipe, be first to beat directly to beat water under high pressure after low-pressure water, like this, when there is larger defect in steel pipe, directly beating water under high pressure will directly cause steel pipe explosion, the accidents such as the personnel that cause injure, device damage occur, and this is also the difficult problem existing in foregoing prior art.Certainly, in the process of suppressing, socket is cut somebody's hair and bellmouth plug has pressure differential, and as previously described, this also easily causes the damage of seal.
Chinese patent literature CN202195928U discloses a kind of valve pressure method of testing, wherein only point out that for different valves test requirements, setting correlation test parameter is down-set in PLC, other technical information is not disclosed, more do not provide the technical scheme how to suppress, that is to say, the problem that he does not exist for prior art noted before is made improvement.
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Utility model content
Technical problem to be solved in the utility model is to provide a kind of metal tube hydraulic pressure automatic testing machine, described testing machine can automatically be identified caliber, carry out double or the multistation hydraulic testing, during the different size hydraulic testing, exempt from remodeling, and can realize the hydraulic testing of mixed pipe and automatic unmanned water pressure generation, raising equipment work efficiency, reduces labor strength.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of metal tube hydraulic pressure automatic testing machine, comprise hydraulic system 1, oil cylinder 2, socket barricade 3, socket cuts somebody's hair 4, female end stifled 5, bellmouth barricade 6, pull bar 7 and hydraulic pressure system 8, described hydraulic system 1 is fixedly connected with described oil cylinder 2, described oil cylinder 2 is fixed on described socket barricade 3, described socket is cut somebody's hair and 4 is fixed on the movable end of described oil cylinder 2, between socket barricade 3 and bellmouth barricade 6, by pull bar 7, be connected, female end stifled 5 is fixed on described bellmouth barricade 6, hydraulic pressure system 8 is connected with female end stifled 5, hydraulic control water valve 9 and socket are cut somebody's hair and 4 are connected, described hydraulic system 1, hydraulic control water valve 9, hydraulic pressure system 8, metal tube conveying arrangement 11 is controlled by described electrical control cabinet 12, described socket cut somebody's hair 4 and female end stifled 5 include steel plate 20 and a plurality of elastic seal ring 19, described a plurality of elastic seal rings 19 are fixed on described steel plate, the diameter of described a plurality of elastic seal rings 19 is different and arrange with one heart, hydraulic system 1 is to oil cylinder 2 discharge pressure fluids, and the movable end of oil cylinder 2 drives socket to cut somebody's hair and 4 moves, thereby realize socket, cuts somebody's hair and 4 pushes down metal tube socket port, electrical control cabinet 12 can be controlled automatically according to the size of metal tube caliber the Output pressure of hydraulic system 1, and hydraulic system 1 can be along with the hydraulic pressure system 8 pressure automatic rising Output pressure that raises, thereby guarantee that socket cuts somebody's hair the snap-in force of 4 pairs of socket ports along with metal tube inside water pressure raises and automatically raises.
In technique scheme, socket cut somebody's hair 4 and female end stifled 5 include steel plate 20 and a plurality of elastic seal ring 19, by being set on steel plate 20, a plurality of elastic seal rings 19 form the hermetically-sealed construction that compresses socket port, owing to not having as document CN201561892U, socket cut somebody's hair 4 and female end stifled 5 on offer groove, therefore, do not affect socket and cut somebody's hair 4 and stifled 5 intensity of female end, operation is simple, cost-saving., compare with fluting meanwhile, the socket of same area cut somebody's hair 4 and female end stifled 5 on more elastic seal ring 19 can be set, that is to say, compare with fluting, socket cut somebody's hair 4 and female end stifled 5 can adapt to the more metal tube of multi-pipe-diameter.In addition, even if the caliber of metal tube to be measured and elastic seal ring 19 are all inadaptable, at this moment by the simple elastic seal ring 19 of changing, do not need to change socket cut somebody's hair 4 and female end block up 5, greatly reduce cost.
Simultaneously, in the process of suppressing, hydraulic pressure raises gradually, socket is cut somebody's hair the snap-in force of 4 pairs of socket ports along with metal tube inside water pressure raises and automatically raises, like this, if when metal tube exists larger defect, can find when hydraulic pressure is lower, avoid the accidents such as booster to occur, guarantee safety of life and property.And, because socket is cut somebody's hair the snap-in force of 4 pairs of socket ports along with metal tube inside water pressure raises and automatically raises, this has just guaranteed that cut somebody's hair 4 pressure of socket finally just rises to peaked in the process of suppressing, that is to say, the elastic seal ring 19 that socket is cut somebody's hair on 4 is not that under high pressure, this has extended the serviceable life of O-ring seal in effect for a long time in whole test process.In addition, socket is cut somebody's hair the snap-in force of 4 pairs of socket ports along with metal tube inside water pressure raises and automatically raises, like this, in the seal that socket is cut somebody's hair on 4 is subject to managing and the pressure differential of oil cylinder little, this has also extended the serviceable life of seal.
Further, described metal tube conveying arrangement 11 comprises lifting support roller 14, lifting support roller elevating mechanism 15, motor 16, caliber recognition system 17 and automatically transports pipe flatcar 18, described lifting support roller 14 is fixed on the left and right sides of automatic fortune pipe flatcar 18 by lifting support roller elevating mechanism 15, motor 16 provides power for lifting support roller elevating mechanism 15, caliber recognition system 17 is fixed on described automatic fortune pipe flatcar 18, described motor 16 and automatically fortune pipe flatcar 18 are controlled by described electrical control cabinet 12, and described caliber recognition system 17 is electrically connected to described electrical control cabinet 12.
The beneficial effect that adopts technique scheme to produce is: described hydraulic pressure automatic testing machine comprises electrical control cabinet, caliber recognition system, electrical control cabinet can be controlled metal tube conveying arrangement collect about the caliber of metal tube and the data after the hydraulic testing, in electrical control cabinet, storage is in advance good about different caliber test hydraulic pressure and the experimental formula between hydraulic pressure, in carrying out the process of hydrostatic test, rising along with hydraulic pressure, sensor passes to hydraulic system after hydraulic pressure pressure signal is calculated by PC, the pressure of hydraulic system also rises thereupon, required sealing force while making the thrust of oil cylinder remain the hydraulic testing, anti-sealing leaks.
According to the related data electrical control cabinet collecting, send corresponding command signal, the action of control associated components, thereby realizing the mixed pipe of the automatic unmanned of metal tube suppresses and can automatically identify metal tube, reduced staff's labour intensity, improved work efficiency, make staff away from hydraulic testing explosive area, improved staff's security.Described hydraulic pressure automatic testing machine has data acquisition function, can carry out historical tracking to metal tube, facilitates query-relevant data.
Further, on same testing machine, described socket cuts somebody's hair 4 and more than female end stifled 5 arranges two covers, in picturesque disorder ground layout between every cover, thereby satisfied more efficient demand.Socket cut somebody's hair 4 can also two covers be set according to different tube diameters model more than, when caliber span is large, select suitable socket to cut somebody's hair 4.
Technique scheme realizes following technique effect: the socket of described hydraulic pressure automatic testing machine is cut somebody's hair and female end blocks the O-ring seal that is provided with different-diameter, can realize the multiple different tube diameters hydraulic testing, need not retrofit, easy to use, and described socket is cut somebody's hair and female end is stifled that two groups or more can be set, on same testing machine, can realize the hydrostatic test that carries out different tube diameters, greatly improved production efficiency, conventionally, socket is not on the same group cut somebody's hair and female end adopts mode straggly to arrange between stifled; In order to save work space, also can take to change cut somebody's hair 4 mode of socket, in this case, only need to select to be applicable to a caliber demand socket and cut somebody's hair and change on the piston rod of fluid cylinder.
Accompanying drawing explanation
Fig. 1 seals the schematic perspective view of closure plate in prior art;
Sealing closure plate diagrammatic cross-section when Fig. 2 is duty;
Fig. 3 is the utility model metal tube hydraulic pressure automatic testing machine structural representation;
Fig. 4 is to be the structural representation that in Fig. 3, socket is cut somebody's hair.
Reference numeral: 1, hydraulic system, 2, oil cylinder, 3, socket barricade, 4, socket is cut somebody's hair, and 5, female end is stifled, 6, bellmouth barricade, 7, pull bar, 8, hydraulic pressure system, 9, hydraulic control water valve, 10? 11, metal tube conveying arrangement, 12, electrical control cabinet, 13? 14, lifting support roller, 15, lifting support roller elevating mechanism, 16, motor, 17, caliber recognition system, 18, automatic fortune pipe flatcar, 19, elastic seal ring, 20, steel plate.
Embodiment
As shown in Figure 3, a kind of metal tube hydraulic pressure automatic testing machine, its groundwork principle is the metal tube caliber that identification is about to carry out the hydraulic testing, control system carries out according to caliber the program of suppressing, first by hydraulic system after the low pressure pretension of metal tube two ends, according to pressure testing water pump, at the inner pressure size producing of the metal tube pressure of regulator solution pressing system automatically, watertight requirement when reaching this caliber metal tube water pressure testing, completes the metal tube hydraulic testing.Described testing machine comprises that hydraulic system 1, oil cylinder 2, socket barricade 3, socket cut somebody's hair 4, female end is stifled 5, bellmouth barricade 6, pull bar 7, hydraulic pressure system 8, metal tube conveying arrangement 11 and electrical control cabinet 12.
Described hydraulic system 1 is fixedly connected with described oil cylinder 2, hydraulic system 1 provides power resources for oil cylinder 2, described oil cylinder 2 is fixed on described socket barricade 3, and described socket is cut somebody's hair and 4 is fixed on the tailpiece of the piston rod of described oil cylinder 2, and socket is cut somebody's hair and 4 under the effect of oil cylinder 2, can be moved left and right; Between socket barricade 3 and bellmouth barricade 6, by pull bar 7, be connected, female end stifled 5 is fixed on described bellmouth barricade 6.Hydraulic pressure system 8 and female end stifled 5 is connected, and water can be injected in metal tube, and hydraulic control water valve 9 and socket are cut somebody's hair and 4 be connected, and described hydraulic system 1, hydraulic control water valve 9, hydraulic pressure system 8, metal tube conveying arrangement 11 are controlled by described electrical control cabinet 12.
Described metal tube conveying arrangement 11 comprises lifting support roller 14, lifting support roller elevating mechanism 15, motor 16, caliber recognition system 17 and automatically transports pipe flatcar 18.Described lifting support roller 14 is fixed on the both sides of automatic fortune pipe flatcar 18 by lifting support roller elevating mechanism 15, motor 16 provides power for lifting support roller elevating mechanism 15, caliber recognition system 17 is fixed on described automatic fortune pipe flatcar 18, caliber recognition system 17 can test out the caliber data of metal tube and send data to electrical control cabinet 12 and use, described motor 16 and automatically fortune pipe flatcar 18 are controlled by described electrical control cabinet 12, and described caliber recognition system 17 is connected with described electrical control cabinet 12.
In order to improve the work efficiency of described testing machine, described socket cut somebody's hair 4 and female end stifled 5 can arrange more than two groups, as shown in Figure 4, described socket is cut somebody's hair and 4 is comprised steel plate 20 and elastic seal ring 19, described elastic seal ring 19 is fixed on described steel plate, described elastic seal ring 19 is provided with more than two, the diameter difference of described elastic seal ring 19 and setting with one heart, diameter and the metal tube of described O-ring seal 19 are suitable, and same group of socket cuts somebody's hair 4 and stifled 5 hydraulic testing work that can realize different tube diameters metal tube of female end.Not socket on the same group cut somebody's hair and female end stifled 5 between can stragglyly arrange, to maximally utilise work space.
Metal tube is from preorder station to this station, and the lifting support roller elevating mechanism 15 on fortune pipe flatcar 18 lifts metal tube automatically, and uses 17 pairs of metal tubes of caliber recognition system to calibrate.Calibrate result and send electrical control cabinet 12 to, electrical control cabinet 12 is controlled lifting support roller elevating mechanism 15 and automatically metal tube is given rise to corresponding height.In order to provide according to metal caliber, meet the test hydraulic pressure that the specification of quality requires, simultaneously, realize hydraulic pressure from motion tracking hydraulic pressure, to guarantee that oil cylinder 2 provides enough sockets pretightning force of cutting somebody's hair, electrical control cabinet 12 starts according to the pre-stored programmed control hydraulic system 1 of suppressing for this caliber within it, oil cylinder 2 is by the socket 4 pre-pressing metal tubes of cutting somebody's hair, and now hydraulic pressure system 8 starts, and carries out low pressure water-filling and high-potting.Simultaneously hydraulic system 1 is along with the rising of the hydraulic pressure system 8 pressure pressure that automatically raises, to guarantee cut somebody's hair 4 real-time pretightning force of metal tube socket.Detect qualified after, electrical control cabinet 12 is controlled hydraulic control water valve 9 and is automatically opened pressure release, automatically the lifting support roller elevating mechanism 15 that fortune is managed on flatcar 18 is simultaneously fallen metal tube automatically to relevant position, after pressure release, oil cylinder 2 drives sockets to cut somebody's hair 4 to return, automatically fortune pipe flatcar 18 starts, and metal tube is transported to next station, then returns, carry out successively working cycle next time, with the control of upper-part, all by electrical control cabinet 12, automatically control and realize.Qualified metal tube carries out data acquisition by electrical control cabinet, is used for carrying out follow-up of quality.
Described hydraulic pressure automatic testing machine comprises electrical control cabinet 12, caliber recognition system 17 and hydraulic pressure system 8, hydraulic pressure system 8 and metal tube conveying arrangement 11 collects can be controlled and receive to electrical control cabinet 12 about the caliber of metal tube and the data after the hydraulic testing, the interior prior storage of electrical control cabinet 12 is good about different caliber experiment hydraulic pressure and the experimental formula between hydraulic pressure, in carrying out the process of hydrostatic test, rising along with hydraulic pressure, hydraulic pressure also rises thereupon, the thrust of oil cylinder 2 is slightly larger than the reacting force of hydraulic pressure forever, and anti-sealing leaks.
According to the related data collecting, electrical control cabinet 12 sends corresponding signal, the action of control associated components, thereby realized the automatic unmanned pressure testing of metal tube, reduced staff's labour intensity, improve work efficiency, made staff away from hydraulic testing explosive area, improved staff's security.Described hydraulic pressure automatic testing machine has data acquisition function, can carry out historical tracking to metal tube, facilitates query-relevant data.
In addition, the socket of described hydraulic pressure automatic testing machine 4 elastic seal rings 19 that are provided with different-diameter of cutting somebody's hair, can realize the multiple different tube diameters hydraulic testing, need not retrofit, easy to use, and, can change according to specific needs the elastic seal ring 19 of different size.Described socket is cut somebody's hair and 4 two or more can be set, and by adjusting socket, cuts somebody's hair 4, just can carry out the hydrostatic test of more different tube diameters on same testing machine, has greatly improved production efficiency.
Applied specific case herein principle of the present utility model and embodiment thereof are set forth, the explanation of above embodiment is just with helping understand method of the present utility model and core concept thereof.It should be pointed out that for the person of ordinary skill of the art, do not departing under prerequisite of the present utility model and can also carry out some improvement and modification to utility model, these improvement and modification also will fall in the protection domain of the utility model requirement.
Claims (10)
1. a metal tube hydraulic pressure automatic testing machine, comprise that hydraulic system (1), oil cylinder (2), socket barricade (3), socket are cut somebody's hair (4), female end stifled (5), bellmouth barricade (6) and hydraulic pressure system (8), described socket cut somebody's hair (4) be connected with described oil cylinder (2), described oil cylinder (2) is connected with described hydraulic system (1), it is characterized in that:
Also comprise caliber recognition system (17) and electric control system (12), described caliber recognition system (17) is for detection of the caliber of metal tube, and sends caliber data to described electric control system (12); Described electric control system (12) sends to hydraulic system (1) and described hydraulic pressure system (8) steering order matching with this caliber hydraulic testing according to caliber data, makes described socket cut somebody's hair (4) according to the big or small hydraulic pre-tightening power progressively increasing that obtains of test hydraulic pressure.
2. metal tube hydraulic pressure automatic testing machine as claimed in claim 1, it is characterized in that: the described socket elastic seal ring (19) that (4) comprise that steel plate (20) is different with a plurality of diameters of cutting somebody's hair, described a plurality of elastic seal rings (19) are installed on described steel plate (20) with one heart.
3. metal tube hydraulic pressure automatic testing machine as claimed in claim 1 or 2, is characterized in that: described socket cut somebody's hair (4) be fixedly connected on described oil cylinder (2) piston rod through described socket barricade (3).
4. metal tube hydraulic pressure automatic testing machine as claimed in claim 1, is characterized in that: described hydraulic pressure system (8) provides test hydraulic pressure by described female end stifled (5) to metal tube.
5. metal tube hydraulic pressure automatic testing machine as claimed in claim 1, is characterized in that: described socket barricade (3) is connected by pull bar (7) with described bellmouth barricade (6).
6. metal tube hydraulic pressure automatic testing machine as claimed in claim 1, it is characterized in that: also comprise metal tube conveying arrangement (11), described metal tube conveying arrangement (11) comprises lifting support roller (14), lifting support roller elevating mechanism (15), motor (16) and automatic fortune pipe flatcar (18), and described lifting support roller (14) is fixed on the both sides of automatic fortune pipe flatcar (18) by lifting support roller elevating mechanism (15).
7. metal tube hydraulic pressure automatic testing machine as claimed in claim 1, is characterized in that: also comprise hydraulic control water valve (9), described hydraulic control water valve (9) is connected with electric control system (12).
8. metal tube hydraulic pressure automatic testing machine as claimed in claim 1, it is characterized in that: described electric control system (12) comprises electrical control cabinet, described electrical control cabinet can be controlled automatically according to the size of metal tube caliber the Output pressure of hydraulic system (1), and hydraulic system (1) can, along with the automatic rising hydraulic pressure output that raises of hydraulic pressure system (8) pressure, keep being greater than all the time the state of test hydraulic pressure.
9. the metal tube hydraulic pressure automatic testing machine as described in any one in claim 1,2,4-8, is characterized in that: described socket is cut somebody's hair (4) and female end stifled (5) can arrange more than two groups.
10. the metal tube hydraulic pressure automatic testing machine as described in any one in claim 1,2,4-8, is characterized in that: described socket is cut somebody's hair more than (4) can arrange two covers according to different tube diameters model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320573009.2U CN203443859U (en) | 2013-09-16 | 2013-09-16 | Automatic water pressure tester for metal pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320573009.2U CN203443859U (en) | 2013-09-16 | 2013-09-16 | Automatic water pressure tester for metal pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203443859U true CN203443859U (en) | 2014-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320573009.2U Expired - Lifetime CN203443859U (en) | 2013-09-16 | 2013-09-16 | Automatic water pressure tester for metal pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203443859U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471927A (en) * | 2013-09-16 | 2013-12-25 | 新兴铸管股份有限公司 | Automatic water pressure testing machine of metal pipe |
| CN111323309A (en) * | 2020-04-13 | 2020-06-23 | 三门梅格测量仪器有限公司 | Pipeline compression bearing test equipment |
-
2013
- 2013-09-16 CN CN201320573009.2U patent/CN203443859U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471927A (en) * | 2013-09-16 | 2013-12-25 | 新兴铸管股份有限公司 | Automatic water pressure testing machine of metal pipe |
| CN103471927B (en) * | 2013-09-16 | 2015-12-09 | 新兴铸管股份有限公司 | A kind of metal tube hydraulic pressure automatic testing machine |
| CN111323309A (en) * | 2020-04-13 | 2020-06-23 | 三门梅格测量仪器有限公司 | Pipeline compression bearing test equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140219 |
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