CN111879470A

CN111879470A - Metal sealing ring performance test machine

Info

Publication number: CN111879470A
Application number: CN202010869652.4A
Authority: CN
Inventors: 刘大为; 刘新学; 罗莉; 龚清清; 李神龙
Original assignee: Aecc Changjiang Engine Co ltd
Current assignee: Aecc Changjiang Engine Co ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2020-11-03

Abstract

The invention provides a metal sealing ring performance testing machine, and relates to the field of sealing element testing equipment. The metal sealing ring performance testing machine comprises a frame, a testing device and a lifting driving device, wherein the testing device comprises a first testing seat assembly and a second testing seat assembly which are arranged oppositely, a sealing cavity for accommodating a metal sealing ring is formed between the first testing seat assembly and the second testing seat assembly, a predetermined number of liquid guide ports are arranged on the first testing seat assembly and the second testing seat assembly, the liquid guide ports are used for testing liquid to enter and exit the sealing cavity, and the lifting driving device is used for driving the first testing seat assembly and the second testing seat assembly to move relatively. The invention has simple structure and convenient assembly and disassembly, the sealing cavity can be adapted to metal sealing rings with different sizes and models, and the performance of the metal sealing ring is reflected whether to meet the requirement or not through the leakage amount of the metal sealing ring, so the test effect is good.

Description

Metal sealing ring performance test machine

Technical Field

The invention relates to the field of sealing element testing equipment, in particular to a metal sealing ring performance testing machine.

Background

The metal sealing ring has the characteristics of high temperature resistance, high pressure resistance and corrosion resistance, is widely applied in the field of fluid sealing, and is mainly used for axial sealing. The metal sealing ring has various structural shapes, such as C-shaped, W-shaped, O-shaped, kettle-shaped and the like.

The initially designed metal sealing ring needs to be subjected to performance verification tests on the basis of theoretical calculation and finite element analysis so as to select the optimal compression amount, the optimal design shape, the optimal plate thickness and the like of the metal sealing ring.

In the prior art, the test equipment for the metal sealing ring is used for testing the metal sealing ring after being assembled, and has the disadvantages of complex structure, complex disassembly and assembly, poor adaptability and unsatisfactory test effect.

Disclosure of Invention

For overcoming the not enough of existence among the prior art, this application provides a metal seal ring capability test machine, simple structure, easy dismounting can be suitable for not unidimensional metal seal ring, and test effect is good.

In order to achieve the purpose, the performance testing machine for the metal sealing ring comprises a rack, a testing device and a lifting driving device;

the testing device is arranged on the rack and comprises a first testing seat assembly and a second testing seat assembly which are arranged oppositely, a sealing cavity for accommodating a metal sealing ring is formed between the first testing seat assembly and the second testing seat assembly, a preset number of liquid guide ports are arranged on the first testing seat assembly and the second testing seat assembly, and the liquid guide ports are used for enabling testing liquid to enter and exit the sealing cavity;

the lifting driving device is installed on the rack and used for driving the first test seat assembly and the second test seat assembly to move relatively.

In a possible embodiment, the first test socket assembly is located above the second test socket assembly, and the lifting drive device is located above the first test socket assembly.

In a possible embodiment, further, the predetermined number of liquid guide ports includes a first liquid guide port and a second liquid guide port;

the first liquid guide port is arranged on the first test seat assembly and corresponds to a first cavity formed by the inner side of the metal sealing ring and the sealing cavity;

the second liquid guide port is arranged on the second test seat assembly and corresponds to a second cavity defined by the outer side of the metal sealing ring and the sealing cavity.

In a possible implementation manner, further, the predetermined number of liquid guide ports further includes a third liquid guide port and a fourth liquid guide port;

the third liquid guide port is arranged on the first test seat assembly and corresponds to the second cavity;

the fourth liquid guide port is arranged on the second test seat assembly and corresponds to the first cavity.

In one possible embodiment, the second test seat assembly comprises a base, a movable seat and a corrugated telescopic sleeve;

the movable seat is slidably mounted on the base, and one end, far away from the base, of the movable seat is used for being connected with the first test seat assembly;

the flexible cover of ripple one end is connected the sliding seat, the other end is connected the base, flexible cover of ripple is used for realizing the sliding seat with sealed between the base.

In a possible embodiment, the lifting driving device comprises a power mechanism and a telescopic mechanism;

the power mechanism is arranged on the rack, and a power output end of the power mechanism is connected with the telescopic mechanism and is used for driving the telescopic mechanism to perform telescopic action;

and the telescopic end of the telescopic mechanism is used for driving the first test socket assembly and the second test socket assembly to move relatively.

In a possible embodiment, further, the telescopic mechanism comprises a worm gear and worm transmission assembly or a lead screw transmission assembly.

In a possible embodiment, further, a permanent magnetic chuck is installed at the telescopic end of the telescopic mechanism.

In a possible embodiment, further, the power mechanism includes one of a servo motor or a stepping motor.

In a possible implementation manner, further, the power mechanism further includes an adjusting handwheel, and the adjusting handwheel is used for driving the telescopic mechanism to perform telescopic action.

Compared with the prior art, the beneficial effects of the application are that:

the application provides a metal sealing ring performance testing machine, which comprises a rack, a testing device and a lifting driving device; the testing device is arranged on the frame and comprises a first testing seat assembly and a second testing seat assembly which are arranged oppositely, a sealed cavity for accommodating a metal sealing ring is formed between the first testing seat assembly and the second testing seat assembly, a predetermined number of liquid guide ports are arranged on the first testing seat assembly and the second testing seat assembly respectively, the predetermined number of liquid guide ports are used for enabling test liquid to pass in and out of the sealed cavity, the lifting driving device is installed on the frame, and the lifting driving device is used for driving the first testing seat assembly and the second testing seat assembly to move relatively. The application provides a metal seal ring capability test machine, simple structure, easy dismounting, metal seal ring sets up in sealed die cavity, but the metal seal ring of the not unidimensional model of sealed die cavity adaptation, and metal seal ring's easy dismounting. Compress metal seal ring step by step through the relative motion between first test seat subassembly and the second test seat subassembly, make metal seal ring reconversion after every level compression, later through the test liquid of drain mouth injection predetermined pressure, measure metal seal ring's leakage quantity, from this, through metal seal ring's leakage quantity, whether response metal seal ring's performance meets the requirements, and test effect is good.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 shows a schematic perspective view of a metal sealing ring performance testing machine according to an embodiment of the present application;

FIG. 2 shows a main view of a metal sealing ring performance tester provided by an embodiment of the present application;

fig. 3 is a schematic perspective view illustrating a rack of a metal sealing ring performance testing machine according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram illustrating a testing device and a lifting driving device in a metal sealing ring performance testing machine according to an embodiment of the present application;

fig. 5 is an exploded schematic view illustrating a testing device and a lifting driving device in a metal seal ring performance testing machine according to an embodiment of the present disclosure;

FIG. 6 shows a cross-sectional view of a test apparatus in an embodiment of the present application;

fig. 7 is a schematic structural diagram illustrating a lifting driving device in a metal sealing ring performance testing machine according to an embodiment of the present application;

fig. 8 shows a structural schematic of a non-magnetic state of a permanent magnetic chuck in the metal sealing ring performance testing machine provided in the embodiment of the present application;

FIG. 9 shows a structural schematic diagram of a magnetic state of a permanent magnetic chuck in the metal sealing ring performance testing machine provided by the embodiment of the present application;

FIG. 10 is a schematic diagram illustrating an inner side leakage test of a metal seal ring performance testing machine according to an embodiment of the present disclosure;

fig. 11 shows a schematic diagram of an outer-side leakage test of a metal seal ring performance testing machine according to an embodiment of the present application.

Description of the main element symbols:

1-a frame; 10-a first frame body; 100-a carrier table; 11-a second frame body;

2-a lifting drive device; 20-a power mechanism; 200-a servo motor; 201-a reducer; 202-adjusting the handwheel; 21-a telescoping mechanism; 210-a worm gear drive assembly; 210 a-a lead screw drive assembly; 23-permanent magnetic chuck; 230-a suction cup body; 231-a stationary magnet; 232-rotating magnet; 24-a gasket; 25-a flange plate;

3-a testing device; 30-a second test socket assembly; 300-pressing cover; 3000-bolt assembly; 3001-a boss portion; 3002-a push-against part; 3003-a first drain port; 3003 a-a first liquid delivery nozzle; 3004-third drain port; 3004 a-a second liquid delivery nozzle; 3005-first sealing plug; 301-sealing ring; 301 a-seal groove; 31-a first test socket assembly; 310-a movable seat; 311-corrugated bellows; 312-a base; 3120-a second drainage port; 3120 a-a first catheter; 3121-a fourth drainage port; 3121 a-a second catheter; 3123-a second sealing plug; 32-sealing the cavity;

1000-metal seal ring.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Example one

Referring to fig. 1, fig. 2 and fig. 5, the present embodiment provides a performance testing machine for a metal seal ring, which is used for testing the performance of the metal seal ring 1000, and the performance of the metal seal ring 1000 in the present embodiment includes a leakage rate, a compression amount, and the like.

The metal sealing ring performance testing machine comprises a machine frame 1, a testing device 3 and a lifting driving device 2, wherein the testing device 3 is arranged on the machine frame 1, the lifting driving device 2 is arranged on the machine frame 1, and the lifting driving device 2 and the testing device 3 are arranged one above the other.

In the present embodiment, the lifting drive device 2 is located above the testing device 3, in other words, the metal seal ring performance testing machine is of a vertical structure, but of course, a horizontal structure may be adopted. The lifting drive 2 outputs a telescopic movement in a linear direction, hereinafter referred to as telescopic movement, and it can be understood that the lifting drive 2 performs telescopic movement in a vertical direction. The lifting driving device 2 is used for driving the testing device 3 to compress the metal sealing ring 1000 through outputting telescopic motion, and the testing liquid is used for testing the leakage rate of the metal sealing ring 1000 by leading testing liquid with preset pressure into the testing device 3.

Referring to fig. 3, the rack 1 includes a first rack 10 and a second rack 11, wherein the first rack 10 is supported on the ground or the platform, a carrying platform 100 is disposed at an end of the first rack 10 away from the ground or the platform, and the carrying platform 100 is used for carrying the testing device 3, that is, the testing device 3 is disposed on the carrying platform 100. The second frame 11 is supported on the first frame 10, the second frame 11 is located above the bearing table 100, and the lifting driving device 2 is installed on the second frame 11.

In this embodiment, the testing device 3 can be directly placed on the supporting platform 100 to facilitate the removal and replacement of the testing device 3 at any time, and the second frame 11 is welded or bolted to the first frame 10.

In some embodiments, the testing device 3 is mounted on the platform 100 by bolts, or directly welded to the platform 100.

Referring to fig. 4, 5 and 6, the testing apparatus 3 includes a first test socket assembly 31 and a second test socket assembly 30, the first test socket assembly 31 is disposed opposite to the second test socket assembly 30, a sealing cavity 32 for accommodating the metal sealing ring 1000 is formed between the first test socket assembly 31 and the second test socket assembly 30, and the first test socket assembly 31 and the second test socket assembly 30 can move relatively.

It can be appreciated that the metal seal ring 1000 is placed in the seal cavity 32 without assembly, and the metal seal ring 1000 is more convenient to install and remove. The metal seal ring 1000 has two opposite end surfaces and two opposite inner and outer sides, and the shape of the metal seal ring 1000 is various, such as C-shaped, W-shaped, O-shaped, pot-shaped, etc., and it should be understood that the above description is only illustrative and not intended to limit the scope of the present application.

Wherein, an end face of metal seal ring 1000 and first test socket subassembly 31 butt, another end face butt second test socket subassembly 30 of metal seal ring 1000, and then the inboard and the outside of metal seal ring 1000 separate into first die cavity (not shown) and second die cavity (not shown) with sealed die cavity 32, promptly, the inboard and the sealed die cavity 32 of metal seal ring 1000 enclose into first die cavity, the outside and the sealed die cavity 32 of metal seal ring 1000 enclose into the second die cavity, wherein, first die cavity and second die cavity do not communicate. Further, the metal seal ring 1000 may be compressed by the relative movement between the first test socket assembly 31 and the second test socket assembly 30.

Further, the first test socket assembly 31 and the second test socket assembly 30 are arranged up and down, and in this embodiment, the first test socket assembly 31 is located above the second test socket assembly 30. It is understood that when the testing device 3 is disposed on the carrier table 100, the second test socket assembly 30 is in direct contact with the carrier table 100, and the first test socket assembly 31 is located between the second test socket assembly 30 and the lifting driving device 2. In other words, the lifting driving device 2 is located above the first test socket assembly 31, and the lifting driving device 2 performs a telescopic motion to drive the first test socket assembly 31 to move relative to the second test socket assembly 30.

The first test seat assembly 31 and the second test seat assembly 30 are provided with a predetermined number of liquid guiding ports, the liquid guiding ports are used for allowing test liquid to enter and exit the sealed cavity 32, the test liquid is used for performing a leakage test on the metal sealing ring 1000 in the sealed cavity 32, and the leakage rate of the metal sealing ring 1000 is measured by measuring the leakage amount of the test liquid.

Referring to fig. 6, further, the first test socket assembly 31 includes a gland 300, a boss portion 3001 is disposed on a surface of the gland 300 facing the second test socket assembly 30, and a pushing portion 3002 is disposed on a surface of the gland 300 away from the boss portion 3001, wherein the boss portion 3001 is matched with the second test socket assembly 30, and the pushing portion 3002 is used for being abutted when the lifting driving device 2 performs a telescopic motion.

Further, the pushing portion 3002 is disposed in the middle of the pressing cover 300, so as to ensure that the force transmitted to the pressing cover 300 by the lifting driving device 2 is more uniform.

The second test socket assembly 30 includes a base 312, a movable seat 310 and a corrugated expansion sleeve 311, wherein the base 312 is used for directly contacting the carrier 100, the movable seat 310 is slidably mounted on the base 312, and one end of the movable seat 310 away from the base 312 is used for connecting the gland 300 in the first test socket assembly 31, it can be understood that the gland 300, the movable seat 310 and the base 312 surround to form the sealed cavity 32, and the gland 300 can drive the movable seat 310 to make axial relative movement with respect to the base 312.

In some specific embodiments, the gland 300 and the movable seat 310 are connected together by a predetermined number of bolt assemblies 3000, and the predetermined number of bolt assemblies 3000 are uniformly distributed along the circumferential direction of the gland 300. Specifically, a through hole (not shown) is formed in the pressing cover 300, a threaded hole (not shown) is formed in the movable seat 310 corresponding to the through hole, when the pressing cover 300 and the movable seat 310 are correspondingly installed, the through hole corresponds to the threaded hole, and the bolt assembly 3000 penetrates through the through hole and the threaded hole to connect the pressing cover 300 and the movable seat 310 together.

The flexible cover 311 of ripple one end connects the sliding seat 310, and the other end connects the base 312, in other words, flexible cover 311 of ripple connects base 312 and sliding seat 310, flexible cover 311 of ripple is located between base 312 and the sliding seat 310, flexible cover 311 of ripple is used for realizing the sealed between sliding seat 310 and the base 312, in order to avoid the test fluid in the sealed die cavity 32 to leak out of testing arrangement 3, flexible cover 311 of ripple still has flexible performance simultaneously, allow gland 300 can drive the sliding seat 310 and do axial relative motion with respect to base 312.

In some specific embodiments, the bellows 311 may be a bellows, and the bellows is welded to the base 312 and the movable seat 310, respectively, to form a sealing effect.

Further, a sealing ring 301 is disposed between the movable seat 310 and the gland 300 to ensure the sealing performance of the sealed cavity 32. Specifically, an annular sealing groove 301a is formed in one end face, away from the base 312, of the movable seat 310, and the sealing ring 301 is disposed in the sealing groove 301 a.

In some embodiments, the sealing ring 301 may be an O-ring or a T-ring, which is only exemplary and not intended to limit the scope of the present disclosure.

In this embodiment, the number of the liquid guiding ports is two, and the two liquid guiding ports include a first liquid guiding port 3003 and a second liquid guiding port 3120, wherein the first liquid guiding port 3003 is disposed on the first test socket assembly 31, specifically, the first liquid guiding port 3003 is disposed on the gland 300 in the first test socket assembly 31, and the first liquid guiding port 3003 is disposed corresponding to the first cavity, in other words, the first liquid guiding port 3003 communicates with the first cavity. The second liquid guide port 3120 is disposed on the base 312 of the first test socket assembly 31, and the second liquid guide port 3120 is disposed corresponding to the second cavity, in other words, the second liquid guide port 3120 communicates with the second cavity.

It is understood that first fluid guide port 3003 is located above second fluid guide port 3120, i.e., second fluid guide port 3120 is at a relatively low level, which facilitates the drainage of the test fluid. When a leakage test is performed, a test liquid with a preset pressure is introduced from the first liquid guide port 3003, the test liquid enters the first cavity from the first liquid guide port 3003, the test liquid in the first cavity has a tendency of leaking to the second cavity, if the metal sealing ring 1000 leaks, namely, the metal sealing ring leaks from the inner side to the outer side, the test liquid flows out from the second liquid guide port 3120 and then collects and flows out from the second liquid guide port 3120, namely, the amount of the leaked test liquid can be obtained, and the inner side leakage test of the metal sealing ring 1000 is realized.

In some embodiments, the first fluid guiding port 3003 is provided with a first fluid guiding nozzle 3003a, which facilitates smooth introduction of the testing fluid, and ensures installation and sealing of the delivery pipe for delivering the testing fluid and the first fluid guiding nozzle 3003 a.

Further, be provided with the first sealed end cap 3005 of detachable on the first drain mouth 3003a, this first sealed end cap 3005 seals the import of first drain mouth 3003a when first drain mouth 3003a does not use to avoid impurity to get into in first drain mouth 3003a and the sealed die cavity 32, and then guarantee unobstructed of first drain mouth 3003 a.

In some specific embodiments, a first liquid guide tube 3120a is connected to the second liquid guide port 3120, the first liquid guide tube 3120a is used for guiding the test liquid leaked from the sealed cavity 32, and an outlet of the first liquid guide tube 3120a can be connected to a measuring instrument or a measuring container.

Further, a detachable second sealing plug 3123 is further disposed at the outlet of the first liquid guide tube 3120a, and the second sealing plug 3123 seals the outlet of the first liquid guide tube 3120a when the first liquid guide tube 3120a is not in use, so as to prevent impurities from entering the first liquid guide tube 3120a and the sealing cavity 32, and further ensure that the first liquid guide tube 3120a is unobstructed.

Referring to fig. 4, fig. 5 and fig. 6, the lifting driving device 2 includes a power mechanism 20 and a telescopic mechanism 21, the power mechanism 20 is mounted on the second frame 11 of the frame 1, and a power output end of the power mechanism 20 is connected to the telescopic mechanism 21 for driving the telescopic mechanism 21 to perform a telescopic action. The telescopic mechanism 21 is arranged along the vertical direction, and a telescopic end of the telescopic mechanism 21 is used for connecting the abutting portion 3002 of the gland 300. The telescopic action of the telescopic mechanism 21 is used for driving the gland 300 to move up and down, so that the gland 300 drives the movable seat 310 to move relative to the base 312 after moving, and when the gland 300 moves close to the base 312, the metal sealing ring 1000 in the sealing cavity 32 is compressed.

The telescopic mechanism 21 includes a worm gear and worm transmission assembly 210, wherein a power output end of the power mechanism 20 is connected to a worm gear of the worm gear and worm transmission assembly 210, and drives the worm gear of the worm gear and worm transmission assembly 210 to lift, that is, to perform a telescopic action. One end of the worm close to the pushing part 3002 of the gland 300 is provided with a flange 25, the worm is in running fit with the flange 25, namely, the worm can rotate relative to the flange 25, and the flange 25 is connected with the pushing part 3002 of the gland 300. There are various ways of connecting the flange 25 to the pushing portion 3002 of the pressing cover 300, for example: welded or bolted.

In some specific embodiments, a permanent magnetic chuck 23 is further disposed between the flange 25 and the pressing cover 300, and the flange 25 is connected to the permanent magnetic chuck 23.

Further, the worm gear and worm transmission assembly 210 is connected with the pushing portion 3002 of the gland 300 through the permanent magnetic chuck 23, and the pushing portion 3002 of the gland 300 is connected or detached by utilizing the magnetic effect of the permanent magnetic chuck 23, so that the assembly and the disassembly are more convenient and faster.

The permanent magnetic chuck 23 includes a chuck body 230, and a fixed magnet 231 and a rotating magnet 232 installed in the chuck body 230. A gasket 24 is further arranged between the upper end of the suction cup body 230 and the flange plate 25, the gasket 24 can play a good role in buffering and shock absorption, the safety of the device is protected, and the lower end of the suction cup body 230 is connected with the abutting part 3002 of the gland 300 through magnetic force.

Referring to fig. 8 and 9, when the N pole of the rotating magnet 232 corresponds to the S pole of the fixed magnet 231, the S pole of the rotating magnet 232 corresponds to the N pole of the fixed magnet 231, and the permanent magnetic chuck 23 has no magnetism, the permanent magnetic chuck 23 cannot adsorb the pushing portion 3002 of the pressing cover 300, so as to facilitate the installation and position adjustment of the testing device 3. The rotation rotates magnet 232, make the N utmost point that rotates magnet 232 correspond the N utmost point of fixed magnet 231, the S utmost point that rotates magnet 232 corresponds the S utmost point of fixed magnet 231, permanent magnet chuck 23 has magnetism, permanent magnet chuck 23 can adsorb gland 300 through magnetic attraction this moment and push away portion 3002, namely, realized being connected of permanent magnet chuck 23 and gland 300, in order to make things convenient for the lift of gland 300, it is more stable when making gland 300 push down, make things convenient for metal seal ring 1000' S installation simultaneously.

In this embodiment, the permanent magnetic chuck 23 is adopted, so that the power mechanism 20 and the gland 300 can be quickly disassembled and assembled, and the working efficiency is greatly improved. Simultaneously, the method has the following advantages: the hoisting and hoisting force of the permanent magnetic chuck 23 is stronger and the magnetic force is permanent; the device can be used without electrifying, the trouble of wiring and power supply is saved, and the metal sealing ring performance testing machine is more flexible in movement.

Further, the power mechanism 20 includes one of a servo motor 200 or a stepping motor (not shown). In this embodiment, the servo motor 200 is selected to provide a power source, and the down stroke of the worm is controlled by the precise pulse control of the servo motor 200, so as to precisely control the compression amount of the metal sealing ring 1000 and improve the testing precision. Of course, the stepper motor can achieve precise control.

In some specific embodiments, the power mechanism 20 further includes a reducer 201, and the reducer 201 is used for connecting the servo motor 200 and the turbine. The speed reduction and torque increase are realized through the speed reducer 201, and the transmission is more stable.

In order to more clearly describe the technical solution of the present embodiment with reference to fig. 1 to 10, the following provides a method for using a metal seal ring performance testing machine:

s10: the testing device 3 is placed on the carrier 100 of the first frame 10, such that the pushing portion 3002 of the pressing cover 300 corresponds to the permanent magnetic chuck 23.

S20: starting the lifting driving device 2 to make the permanent magnetic chuck 23 abut against the abutting part 3002 of the gland 300, rotating the rotating magnet 232 to make the permanent magnetic chuck 23 suck the gland 300, detaching the bolt assembly 3000 connected between the gland 300 and the movable seat 310, lifting the gland 300 through the lifting driving device 2 to make the gland 300 separate from the movable seat 310, loading the metal sealing ring 1000 to be tested, and then connecting the gland 300 with the movable seat 310.

S30: the first sealing plug 3005 on the first drainage nozzle 3003a is opened, the first drainage nozzle 3003a is connected with a test liquid delivery pipe, the second sealing plug 3123 on the first liquid guide pipe 3120a is opened, and the first liquid guide pipe 3120a is connected to a measuring instrument or a measuring container.

S40: and testing to obtain the compression amount and the inner side leakage rate of the metal sealing ring 1000 to be tested.

The testing step in step S40 specifically includes:

the lifting driving device 2 is started to compress the metal sealing ring 1000 step by step, the metal sealing ring 1000 is elastically deformed, and it can be understood that the step-by-step compression is performed in a progressive trend of compressing the compression amount of the metal sealing ring 1000 each time.

The alternative is to increase the compression amount by 0.45% to 1% each time, and certainly, 0.5%, 0.55%, 0.6%, 0.65%, 0.7%, 0.75%, 0.8%, 0.85%, 0.9%, or 0.95% may also be selected, and it can be understood that, in order to achieve accurate measurement data, the smaller the compression amount is, the more accurate the value is, the above is merely an example and is not a limitation to the scope of the present application.

After the metal sealing ring 1000 is compressed each time, the pressing of the lifting driving device 2 on the gland 300 is released, that is, the permanent magnetic chuck 23 loses the magnetic attraction force on the gland 300 by rotating the rotating magnet 232, and then the power mechanism 20 drives the worm to drive the permanent magnetic chuck 23 to ascend, at this time, the metal sealing ring 1000 in the sealing cavity 32 is restored to the initial state.

And then performing an inner side leakage test, introducing a test liquid with a preset pressure through the first liquid guide nozzle 3003a, allowing the test liquid to enter the first cavity, maintaining the pressure of the test liquid for 5-10min, wherein the duration of each pressure maintaining needs to be consistent, measuring the amount of the test liquid flowing out of the first liquid guide tube 3120a to obtain the inner side leakage rate of the metal sealing ring 1000, then releasing the pressure maintaining, performing lower-stage compression, and directly releasing the pressure maintaining and performing lower-stage compression if no test liquid flows out of the first liquid guide tube 3120 a.

S50: the test is finished; it can be understood that the elastic deformation of the metal seal ring 1000 has a critical point, and when the measured leakage deviation of the test solution is not large after the metal seal ring 1000 is compressed for a plurality of times, it can be determined that the metal seal ring 1000 is plastically deformed, and the test is not needed.

This embodiment is through the test to metallic seal 1000's compressive capacity and leakage rate, and whether response metallic seal 1000's performance meets the requirements, and the test effect is good, and the precision is high. Meanwhile, the embodiment is simple in structure and convenient to disassemble and assemble, and can be suitable for the metal sealing rings 1000 with different sizes.

In addition, the embodiment can also test the pressure bearing of the metal sealing ring 1000 by inputting test liquids with different pressures.

Example two

Referring to fig. 1 to fig. 11, the present embodiment provides a metal seal ring performance testing machine, which is an improvement on the first embodiment, and is different from the first embodiment in that:

referring to fig. 6, 10 and 11, in the present embodiment, the number of the liquid guiding ports is four, and the four liquid guiding ports include a first liquid guiding port 3003, a third liquid guiding port 3004, a second liquid guiding port 3120 and a fourth liquid guiding port 3121.

The first liquid guiding port 3003 and the second liquid guiding port 3120 continue to use the technical solution of the first embodiment, and are not described in detail herein.

The third fluid guide port 3004 is disposed on the first test socket assembly 31, specifically, on the gland 300 in the first test socket assembly 31, and the third fluid guide port 3004 is disposed corresponding to the second cavity, in other words, the third fluid guide port 3004 communicates with the second cavity. The fourth fluid guide port 3121 is provided in the base 312 of the first test seat assembly 31, and the fourth fluid guide port 3121 is provided corresponding to the first cavity, in other words, the fourth fluid guide port 3121 communicates with the first cavity.

It is understood that third liquid guide port 3004 is located above fourth liquid guide port 3121, that is, fourth liquid guide port 3121 is at a relatively low position, which facilitates the drainage of the test liquid. When a leakage test is performed, a test liquid with a preset pressure is introduced from the third liquid guide port 3004, the test liquid enters the second cavity from the third liquid guide port 3004, the test liquid in the second cavity has a tendency of leaking to the first cavity, if the metal sealing ring 1000 leaks, namely, the metal sealing ring leaks from the outer side to the inner side, the test liquid can flow out from the fourth liquid guide port 3121, and then the amount of the leaked test liquid is obtained at the fourth liquid guide port 3121, namely, the outer side leakage test of the metal sealing ring 1000 is realized.

In some embodiments, the third fluid guiding port 3004 is provided with a second fluid guiding nozzle 3004a, which facilitates smooth introduction of the testing fluid, and ensures installation and sealing of the second fluid guiding nozzle 3004a and a delivery pipe for delivering the testing fluid. Also be provided with the first sealed end cap 3005 of detachable on the second drain mouth 3004a, this first sealed end cap 3005 seals the import of second drain mouth 3004a when second drain mouth 3004a does not use to avoid impurity to get into in second drain mouth 3004a and the sealed die cavity 32, and then guarantee that second drain mouth 3004a is unobstructed, reduce the interference to the test.

In some specific embodiments, a second liquid guide tube 3121a is connected to the fourth liquid guide port 3121, the second liquid guide tube 3121a is used for guiding the test liquid leaked from the sealed cavity 32, and an outlet of the second liquid guide tube 3121a can be connected to a measuring instrument or a measuring container.

Further, a detachable second sealing plug 3123 is also arranged at the outlet of the second liquid guide tube 3121a, the second sealing plug 3123 seals the outlet of the second liquid guide tube 3121a when the second liquid guide tube 3121a is not used, so as to avoid impurities from entering the second liquid guide tube 3121a and the sealing cavity 32, further ensure the smoothness of the second liquid guide tube 3121a, and reduce the interference to the test.

Referring to fig. 10 and 11, in the present embodiment, an inner side leakage test of the metal seal ring 1000 may be performed, and an outer side leakage test may also be performed. It should be noted that before the inside leakage test, the first sealing plug 3005 is required to seal the second liquid guiding nozzle 3004a, and the second sealing plug 3123 is required to seal the second liquid guiding tube 3121a, and similarly, before the outside leakage test, the first sealing plug 3005 is required to seal the first liquid guiding nozzle 3003a, and the second sealing plug 3123 is required to seal the first liquid guiding tube 3120a, where the method for both the inside leakage test and the outside leakage test can be performed by referring to the method in the first embodiment, and therefore, detailed description thereof is omitted.

EXAMPLE III

Referring to fig. 1 to fig. 11, the performance testing machine for metal seal ring provided in the present embodiment is an improvement made on the basis of the first embodiment or the second embodiment, and the difference is that:

referring to fig. 7, in the present embodiment, the telescopic mechanism 21 includes a screw driving component 210a, that is, the screw driving component 210a replaces the worm gear and worm driving component 210, wherein the screw driving component 210a includes a screw nut and a screw lever, wherein the screw nut is driven by the servo motor 200 to rotate, the screw nut drives the screw lever to lift, that is, to perform the telescopic action, the screw lever is rotatably connected to one end of the permanent magnetic chuck 23, and it can be understood that the screw lever can rotate relative to the permanent magnetic chuck 23, but cannot drive the permanent magnetic chuck 23 to rotate.

Example four

Referring to fig. 1 to fig. 11, the performance testing machine for a metal sealing ring according to the present embodiment is an improvement made on the basis of any one of the first to third embodiments, and compared with any one of the first to third embodiments, the differences are that:

referring to fig. 2, fig. 4, fig. 5 and fig. 7, in the present embodiment, the power mechanism 20 further includes an adjusting handwheel 202, and the adjusting handwheel 202 is used for driving the telescopic mechanism 21 to perform a telescopic action.

It can be understood that, in the embodiment, the adjusting handwheel 202 is used, so that when the servo motor 200 fails or is powered off, the adjusting handwheel 202 is manually rotated to drive the telescoping mechanism 21 to perform telescoping movement.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A metal sealing ring performance testing machine is characterized by comprising a rack, a testing device and a lifting driving device;

2. The metal seal ring performance testing machine as defined in claim 1, wherein the first test socket assembly is located above the second test socket assembly, and the lifting drive is located above the first test socket assembly.

3. The metal seal ring performance testing machine of claim 1 or 2, wherein the liquid guiding port comprises a first liquid guiding port and a second liquid guiding port;

4. The metal seal ring performance testing machine of claim 3, wherein the predetermined number of fluid conducting ports further comprises a third fluid conducting port and a fourth fluid conducting port;

5. The metal seal ring performance testing machine of claim 1, wherein the second test seat assembly comprises a base, a movable seat and a corrugated expansion sleeve;

6. The metal seal ring performance testing machine of claim 1, wherein the lifting driving device comprises a power mechanism and a telescopic mechanism;

7. The metal seal ring performance testing machine of claim 6, wherein the telescoping mechanism comprises a worm gear drive assembly or a lead screw drive assembly.

8. The metal seal ring performance testing machine of claim 6, wherein the telescoping end of the telescoping mechanism is mounted with a permanent magnet chuck.

9. The metal seal ring performance testing machine of claim 6, wherein the power mechanism includes one of a servo motor or a stepper motor.

10. The metal seal ring performance testing machine as claimed in any one of claims 6 to 9, wherein the power mechanism further includes an adjusting hand wheel, and the adjusting hand wheel is used for driving the telescoping mechanism to perform telescoping action.