CN210005182U - Dynamic simulation testing device for sealing reliability of valve seat of deep sea gate valve - Google Patents
Dynamic simulation testing device for sealing reliability of valve seat of deep sea gate valve Download PDFInfo
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- CN210005182U CN210005182U CN201920956320.2U CN201920956320U CN210005182U CN 210005182 U CN210005182 U CN 210005182U CN 201920956320 U CN201920956320 U CN 201920956320U CN 210005182 U CN210005182 U CN 210005182U
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Abstract
The utility model relates to a deep sea gate valve disk seat sealing reliability dynamic simulation testing arrangement, including simulation valve body and the connection end cover of seal installation at simulation valve body up end, sealed installation has the disk seat of being tried in the simulation valve body, sealed department of disk seat up end is equipped with rotatable simulation flashboard of being tried, disk seat and simulation valve body of being tried, enclose into sealed chamber between the connection end cover, simulation flashboard and connection end cover, enclose into the sealed chamber of second between the disk seat of being tried, disk seat and simulation flashboard of being tried, enclose into the sealed chamber of third between the simulation valve body, be equipped with the third test mouth in the sealed chamber of intercommunication on the connection end cover, the test mouth in the sealed chamber of intercommunication second, simulation valve body bottom is seted up and is let in pressure gaseous blow vent to the third sealed chamber, the utility model discloses a to the inside pressure medium of disk seat inner chamber pressurization simulation deep sea gate valve of being tried, continuous action simulation flashboard, thereby carry out dynamic simulation test and verify deep sea.
Description
Technical Field
The utility model belongs to the technical field of the field and specifically relates to kinds of deep sea gate valve disk seat seal reliability dynamic simulation testing arrangement.
Background
With the strategic shift of our country's oil exploration and development to the ocean, the demand for marine oil equipment is further times greater, resulting in greater dependence on foreign technologies and equipment, so that it is urgent to develop drilling and production equipment suitable for oil and gas exploration and development in our country, both from the aspect of national energy safety and from the aspect of future development of equipment manufacturing industry.
The technology and equipment of the underwater valve device are monopolized by foreign companies for a long time, the investment and research in the aspect are lacked in China, and in recent years, part of enterprises in China already develop research on special technology and products of offshore oil underwater equipment, so that great progress is made.
For the valve used on land, maintenance periods are provided in the engineering use process, and disassembly and maintenance can be performed when a fault occurs, so that the reliability and the service life of the valve internals can be ensured only by a plurality of inspection and maintenance periods, and the process, medium and temperature are different, and the requirements of the maintenance periods are also different.
For the valve used in the deep sea environment, in addition to considering the influence of the use process, medium, temperature and pressure of the valve on the internal components of the valve , the deep sea valve device needs to be guaranteed to be used underwater for a long period (at least more than 15 years), maintenance-free and high-reliability, so that necessary real working condition simulation test verification needs to be performed on the reliability of the design, wherein the test includes the verification of the sealing performance between the valve seat and the gate plate and between the valve seat and the valve body, and after the verification is reliable, actual engineering application can be performed on the valve component body.
Disclosure of Invention
The to-be-solved technical problem of the utility model is that, in order to overcome the deficiency among the prior art, the utility model provides an kinds of deep sea gate valve seat seal reliability dynamic simulation testing arrangement, through under the pressure simulation deep sea valve internal medium pressure condition to the valve seat inner chamber pressurization, the dynamic simulation test and verification are carried out to the sealing performance between the valve seat of deep sea valve floodgate and flashboard, valve seat and the valve body, realize the long period non-maintaining of deep sea gate valve, increase of service life's purpose.
deep sea gate valve seat sealing reliability dynamic simulation testing arrangement that adopts, including the simulation valve body that has the inner chamber and the connection end cover of seal installation at simulation valve body up end, the sealed installation has the disk seat of being tried in the simulation valve body, the sealed department of disk seat up end of being tried is equipped with rotatable simulation flashboard, disk seat and simulation valve body, the connection end cover of being tried between enclose into sealed chamber, enclose into the second sealed chamber between simulation flashboard and connection end cover, the disk seat of being tried, enclose into the third sealed chamber between disk seat of being tried and simulation flashboard, the simulation valve body, be equipped with the third test port of intercommunication sealed chamber on the connection end cover, the test port of intercommunication second sealed chamber, the simulation valve body bottom is seted up can be to the third sealed chamber and is let in pressure gas's blow vent.
Specifically, the connecting end cover is provided with a support, a driving device is fixed on the support, an output shaft of the driving device is in transmission connection with a transmission shaft arranged in the connecting end cover through a connecting shaft sleeve, the transmission shaft is in transmission connection with the simulation flashboard through a key, and the bottom of the support is provided with a second testing port communicated with the th testing port.
, a bushing and a sealing element are arranged between the drive shaft and the connecting end cover.
Simulation flashboard upper end periphery and connection end cover's hole between be equipped with thrust bearing, have 1 ~ 2mm clearance between simulation flashboard up end and the hole top surface of connection end cover, simulation flashboard lower extreme periphery and the inner chamber wall of connection end cover to ensure that the sealed chamber of second and test port intercommunication.
For the leakproofness between the terminal surface under improvement test disk seat up end and the simulation flashboard, test disk seat up end, simulation flashboard down the terminal surface be provided with corresponding metal hardening layer that is used for sealing respectively.
Specifically, for improving testing arrangement's overall seal effect, the disk seat of being tested under be equipped with the elasticity pretension piece between terminal surface and the simulation valve body inner chamber bottom surface, be equipped with the sealing member under the disk seat under the being tested between terminal surface and the simulation valve body inner chamber bottom surface, between simulation flashboard up end and the interior bottom surface of connecting end cover and between connecting end cover medial surface and the simulation valve body inner chamber lateral wall.
The beneficial effects of the utility model are that the utility model discloses a to the test disk seat inner chamber pressurization simulation deep sea valve internal pressure medium, the simulation flashboard of continuous action to dynamic simulation test and verification are carried out to deep sea valve 's sealing performance, have realized deep sea gate valve long period non-maintaining, increase of service life's purpose.
Drawings
The present invention will be further described in with reference to the following drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged schematic view of a structure at a in fig. 1.
In the figure, 1, a simulated valve body, 2, a connecting end cover, 3, a bracket, 4, a driving device, 5, a connecting shaft sleeve, 6, a transmission shaft, 7, a bush, 8, a tested valve seat, 9, an elastic preload piece, 10, a simulated gate plate, 11, a thrust bearing, 12, a metal hardened layer, 13, an sealed cavity, 14, a second sealed cavity, 15, a third sealed cavity, 16, a third test port, 17, a test port, 18, an air vent, 19, a second test port
Detailed Description
The invention will now be described in greater detail with reference to the accompanying drawings, which are simplified schematic drawings that illustrate, by way of illustration only, the basic structure of the invention and, therefore, only show the elements that are relevant to the invention.
The dynamic simulation test device for the sealing reliability of the valve seat of the deep sea gate valve shown in the figures 1 and 2 comprises a simulation valve body 1 and a connecting end cover 2 which is hermetically mounted on the upper end face of the simulation valve body 1, wherein the simulation valve body 1 is provided with a step-shaped circular hole inner cavity, the connecting end cover 2 is provided with an inner hole and a step-shaped circular boss, the inner wall of a large hole of the inner cavity of the simulation valve body 1 is in sealing fit with the large end part of the boss of the connecting end cover 2 through a sealing element, and the large end part is fastened.
The connecting end cover 2 on fixed mounting have a support 3, be fixed with drive arrangement 4 on the support 3, drive arrangement 4 is the type of can positive and negative two-way rotation (such as hydraulic motor, rotary mechanism etc.), 4 output shafts of drive arrangement are connected with the transmission shaft 6 transmission that stretches into the connecting end cover 2 downthehole through connecting axle sleeve 5, transmission shaft 6 and connecting end cover 2 between be equipped with bush 7 and be provided with the sealing member.
Be located 1 interior seal installation of simulation valve body and be tried disk seat 8, the disk seat 8 upper end of being tried has T shape flange boss, and the disk seat 8 periphery of being tried cooperatees with the aperture inner wall of 1 inner chamber of simulation valve body, is equipped with the sealing member between disk seat 8's T shape flange boss up end and the 2 terminal surfaces of connecting end cover, disk seat 8 lower terminal surface of being tried and be equipped with elasticity pretension piece 9 and sealing member between 1 inner chamber bottom surface of simulation valve body.
Be equipped with simulation flashboard 10 in the space between 8 up end of disk seat and the 2 hole top surfaces of connecting end cover of being examined, simulation flashboard 10 upper end periphery and connecting end cover 2's hole between be equipped with thrust bearing 11, transmission shaft 6 is connected the transmission through key and simulation flashboard 10 and is realized the rotary motion of simulation flashboard 10. Tested 8 up end of valve seat, simulation flashboard 10 lower extreme face be provided with corresponding metal sclerosis layer 12 that is used for sealing respectively, when simulation flashboard 10 is rotatory, metal sclerosis layer 12 can improve the wearability and the leakproofness between 8 up end of valve seat and the simulation flashboard 10 lower extreme face of being tested, increase of service life.
The testing valve comprises a tested valve seat 8, a simulated valve body 1 and a connecting end cover 2, wherein an -th sealing cavity 13 is arranged between the tested valve seat 8 and the simulated valve body 1, a second sealing cavity 14 is arranged between the simulated valve plate 10 and the connecting end cover 2 and between the tested valve seat 8 and the simulated valve plate 10 and between the tested valve body 1, a third sealing cavity 15 is arranged between the tested valve seat 8 and the simulated valve body 1, a third testing port 16 communicated with the -th sealing cavity 13 and a -th testing port 17 communicated with the second sealing cavity 14 are arranged on the connecting end cover 2, a vent 18 capable of leading pressure gas into the third sealing cavity 15 is arranged at the bottom of the simulated valve body 1, and a second testing port 19 communicated with the -th.
Particularly, gaps of 1-2 mm are reserved between the upper end face of the simulation gate plate 10 and the top face of an inner hole of the connecting end cover 2 and between the periphery of the lower end of the simulation gate plate 10 and the wall of an inner cavity of the connecting end cover 2, so that communication between the second sealing cavity 14 and the -th testing port 17 is ensured.
The test procedure and method are briefly described as follows:
a. after the sealing element and the elastic preload piece 9 are arranged at the end of the tested valve seat 8 , of the sealing element and the elastic preload piece are arranged in a small hole of the inner cavity of the simulation valve body 1 according to the figure, and then the sealing element is arranged in a sealing groove at the upper end of the tested valve seat 8;
b. assembling the simulation gate plate 10, the thrust bearing 11, the key and the transmission shaft 6 according to the diagram and then matching with the tested valve seat 8, wherein the contact matching surface of the simulation gate plate 10 and the tested valve seat 8 is not coated with any lubricant;
c. after a sealing element and a bush 7 are respectively arranged in the connecting end cover 2 according to the diagram, a transmission shaft 6 passes through a matching hole in the center of the connecting end cover 2 and then is matched with a big hole in the inner cavity of the simulation valve body 1 according to the diagram, and the sealing element and the bush are fastened by bolts and nuts;
d. connecting the bracket 3 with the connecting end cover 2 through bolts, and ensuring that the second test port 19 at the bottom of the bracket 3 is aligned with the th test port 17 in the connecting end cover 2 to ensure communication with the second sealed cavity 14;
e. an output shaft of the driving device 4 is connected with a transmission shaft 6 through a connecting shaft sleeve 5 and a key, and the driving device 4 is fastened on the bracket 3 through a bolt and a nut;
f. under the condition that the sealed cavity 13, the second sealed cavity 14 and the third sealed cavity 15 are all at atmospheric pressure, pressure oil is circularly introduced into the driving device 4 to drive the simulation gate plate 10 to rotate for a plurality of times, and the simulation gate plate 10 does not have obvious clamping stagnation and creeping phenomena in the period;
g. after the step f is finished, introducing low-pressure compressed air into the third sealing cavity 15 through the vent hole 18, maintaining the pressure for at least 5 minutes, observing whether the th sealing cavity 13, the second sealing cavity 14 and the matching parts of the sealing elements are leaked during the pressure maintaining process, if the leakage exists, detecting whether the sealing elements, the metal hardened layer 12 matched between the tested valve seat 8 and the simulation gate plate 10 are damaged, replacing the sealing elements or repairing the metal hardened layer 12 and then testing again, and if the leakage does not exist, releasing the pressure in the third sealing cavity 15 to the atmospheric pressure;
h. vertically placing the testing device which finishes the step g into a testing water tank which is not filled with water, ensuring that the second testing port 19 and the third testing port 16 are vertically upward, and repeating the step g after each testing pipeline and remote monitoring connection are checked to be intact, wherein a testing medium is nitrogen, the pressure of the medium is loaded according to 1.1 times of the nominal pressure of a valve , the pressure maintaining time is at least 1 hour, and other operations are unchanged;
i. injecting clean water into the test pool after the step h is finished, completely immersing the test device, aligning a remote monitoring system with the second test port 19 and the third test port 16, introducing high-pressure nitrogen with 1.03-1.05 times of nominal pressure of a valve into the third seal cavity 15, maintaining pressure, simultaneously driving the simulation gate plate 10 to perform reciprocating switch rotation actions (clockwise closing and anticlockwise opening) through the driving device 4, observing whether bubbles emerge from the second test port 19 and the third test port 16 during the action of the simulation gate plate 10, recording the number of bubbles in unit time of the second test port 19 or the leakage volume of a flowmeter in unit time, observing the change of the pressure maintaining pressure, ensuring that the test pressure when the whole test is finished is not lower than the nominal pressure of the valve , if the number of bubbles is smaller than the maximum limit allowed by the valve seat seal leakage in the design specification of the valve , continuing the test until the required action number is finished, and finishing the test if the number of bubbles exceeds the maximum limit allowed by the valve seat seal leakage in the design specification of the valve , sealing hardening test layer 12 between the test valve seat and the simulation gate plate 10, and finishing the test.
The device can realize serial, normalized and standardized testing of the valve seats and the gate plates of the deep sea gate valve in different sizes by replacing tested valve seats 8, simulated gate plates 10, connecting end covers 2, simulated valve bodies 1 and the like in different design sizes, improves testing efficiency, reduces testing cost and shortens product development and development periods, can independently perform simulated testing on the valve seats and the gate plates of the deep sea gate valve without depending on a valve body, and can be used for loading pressure to half of testing pressure firstly when high-pressure gas is introduced, maintaining the pressure for 3 minutes and then gradually pressurizing to the testing pressure by which is not higher than the testing pressure.
The utility model discloses can be applied to 1500 meters under water, rated pressure 5000PSI (34.5MPa) deep sea gate valve's valve body, valve seat, flashboard part structure size, roughness, the independent test verification of case hardening processing technology method parameter and cooperation sealing performance, through experimental test, the biggest static pressure seal test pressure between valve seat and flashboard, valve seat and the valve body can reach 1.1 times of rated pressure, and does not have obvious seepage, under the high-pressure gas test pressure condition of rated pressure, when the flashboard moves more than thousands of times in succession, there is not obvious leakage between valve seat and the flashboard, the action is nimble, for valve seat, flashboard long-life, high reliability use provide experimental foundation and assurance on the valve body.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (6)
- The dynamic simulation test device for the sealing reliability of the valve seat of the deep sea gate valve comprises a simulation valve body with an inner cavity and a connecting end cover which is hermetically arranged on the upper end face of the simulation valve body, a tested valve seat is hermetically arranged in the simulation valve body, and a rotatable simulation flashboard is arranged at the sealing position of the upper end face of the tested valve seat.
- 2. The dynamic simulation test device for the sealing reliability of the valve seat of the deep sea gate valve as claimed in claim 1, wherein the connecting end cover is provided with a support, the support is fixed with a driving device, an output shaft of the driving device is in transmission connection with a transmission shaft arranged in the connecting end cover through a coupling sleeve, the transmission shaft is in transmission connection with the simulation gate plate through a key, and the bottom of the support is provided with a second test port communicated with a th test port.
- 3. The deep sea gate valve seat seal reliability dynamic simulation test device of claim 2, wherein: and a bushing and a sealing element are arranged between the transmission shaft and the connecting end cover.
- 4. The deep sea gate valve seat seal reliability dynamic simulation test device of claim 2, wherein: simulation flashboard upper end periphery and connection end cover's hole between be equipped with thrust bearing, have 1 ~ 2mm clearance between simulation flashboard up end and the hole top surface of connection end cover, simulation flashboard lower extreme periphery and the inner chamber wall of connection end cover.
- 5. The deep sea gate valve seat seal reliability dynamic simulation test device of claim 1, characterized by: and the upper end surface of the tested valve seat and the lower end surface of the simulated gate plate are respectively provided with a corresponding metal hardened layer for sealing.
- 6. The deep sea gate valve seat seal reliability dynamic simulation test device of claim 1, characterized by: elastic pre-tightening pieces are arranged between the lower end face of the tested valve seat and the bottom face of the inner cavity of the simulation valve body, and sealing pieces are arranged between the lower end face of the tested valve seat and the bottom face of the inner cavity of the simulation valve body, between the upper end face of the simulation gate plate and the inner bottom face of the connecting end cover, and between the inner side face of the connecting end cover and the side wall of the inner cavity of the simulation valve body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920956320.2U CN210005182U (en) | 2019-06-24 | 2019-06-24 | Dynamic simulation testing device for sealing reliability of valve seat of deep sea gate valve |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920956320.2U CN210005182U (en) | 2019-06-24 | 2019-06-24 | Dynamic simulation testing device for sealing reliability of valve seat of deep sea gate valve |
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| CN210005182U true CN210005182U (en) | 2020-01-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110220652A (en) * | 2019-06-24 | 2019-09-10 | 吴忠仪表有限责任公司 | Deep-sea gate valve seat sealing reliability dynamic simulant test device |
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- 2019-06-24 CN CN201920956320.2U patent/CN210005182U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110220652A (en) * | 2019-06-24 | 2019-09-10 | 吴忠仪表有限责任公司 | Deep-sea gate valve seat sealing reliability dynamic simulant test device |
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