CN209764342U - Thermal recovery packing element locking test device - Google Patents
Thermal recovery packing element locking test device Download PDFInfo
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- CN209764342U CN209764342U CN201920448975.9U CN201920448975U CN209764342U CN 209764342 U CN209764342 U CN 209764342U CN 201920448975 U CN201920448975 U CN 201920448975U CN 209764342 U CN209764342 U CN 209764342U
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Abstract
The utility model discloses a thermal recovery packing element locking test device, include packing element, locking mechanism, packing element inner tube, go up pressure testing coupling, test sleeve pipe, lower pressure testing coupling, test sleeve pipe upper end is detained for the toper with last pressure testing coupling and is connected, and test sleeve pipe lower extreme is detained for the toper with lower pressure testing coupling and is connected, packing element inner tube upper end is detained for the toper with last pressure testing coupling and is connected, and the part that load-bearing platform is located packing element inner tube outside is called outer annular table, and outer annular table external diameter is less than test sleeve pipe internal diameter, packing element up end top is on outer annular table terminal surface down, upward the last capillary thread connection hole that the axial link up is seted up to the pressure testing coupling, the passageway that overflows that radially link up is seted up to the packing element inner tube, the lower capillary thread connection hole that the axial link up is seted up to pressure. The device needs to adopt the toper to detain between the sealed connecting piece and connect, avoids the rubber ring sealed, adopts to detain sealed, avoids when experimental, and other seal structure are to the interference of packing element test performance.
Description
Technical Field
The utility model relates to an oil well packer test device, specifically speaking are a rubber barrel locking test device is adopted to heat.
Background
Compression packers for oil and gas fields are one of the important downhole tools in oil and gas field production, located between tubing and casing. And performing multi-layer separation sealing in the oil well casing pipe, thereby realizing the plugging requirement in the oil extraction process. And the method provides guarantee for the technologies of oil well layered oil extraction, water blocking, water injection and the like. The sealing capacity between the packer and the sleeve is one of important technical indexes for measuring the performance of the packer, and the packer rubber barrel is an important part of the packer and is known as the 'heart' of the packer, and the sealing performance of the packer is directly determined.
At present, various thermal recovery packers are widely applied in heavy oil thermal recovery wells in order to meet the requirements of sealing, heat insulation, hanging sand blocking and the like. In order to evaluate the high-temperature sealing performance of the rubber cylinder, the whole high-temperature test of the packer and the test of an external heating device in which the rubber cylinder is pressed in a sleeve are mainly adopted at present. Aiming at the whole high-temperature test of the packer, the rubber cylinder is mainly combined with other parts of the packer, and the sealing performance of the rubber cylinder is judged through the whole setting, seal checking and other test links of the packer. However, this approach has the following disadvantages: firstly, the packer has a complex structure, more parts and longer working hours in the dismounting process, so that the efficiency of the test process is low; secondly, in the setting and seal checking processes of the packer, part of parts can be damaged irreparably, so that the test cost is high; the whole high-temperature test of packer, the device is big, and the sealing member is many, and the link is more, if phenomenons such as appear leaking, difficult judgement problem root cause, consequently can not carry out accurate aassessment to the sealing performance of packing element to influence the design and the application of packing element. For the test of the externally-wound heating device, the heating point is close to the rubber cylinder, the temperature is difficult to accurately control, the rubber cylinder is easy to be damaged by high temperature, and an accurate test result is difficult to obtain.
Therefore, it is necessary to modify the existing packer rubber tube testing device, and provide a testing device which has a simple structure, is easy to operate, and can test the sealing performance of the rubber tube under high temperature conditions.
The taper thread is also called taper pipe thread, and is mainly used for a thread used for sealing occasions on fluid such as pipelines and the like. Machines are generally less prone to tapered threads. Generally, the external taper thread and the internal straight pipe or the external taper thread and the internal taper thread are matched, and the conical buckle connection sealing is called.
Application No.: 201811191556.8 discloses a test tool for testing the performance of a rubber cylinder, which relates to the field of testing tools for downhole tools in the petroleum industry, and comprises a pressure-bearing joint, a casing pipe nipple, a mandrel, an upper protective ring, a lower protective ring, a support ring, a lower joint, a baffle ring, a locking screw and a high-temperature heat tracing band; the tool can be used for testing the setting performance and the sealing performance of the rubber cylinders of the bridge plug and the packer under the condition of simulating the temperature and the pressure of a real stratum, and has the advantages of simple structure, multiple functions, simplicity and convenience in operation and accuracy in performance test of the rubber cylinders.
Application No.: 201310183631.7 relates to a test device and method for detecting the performance of a packer locking mechanism. The device comprises a sleeve, a sealing barrel, an elastic piece and a pressing nozzle. This test device is through the design that adopts sealed section of thick bamboo, can effectively seal the annular space between packer and the sleeve to the packing element under the normal operating condition of effective simulation, consequently can be under the packing element condition alone detect locking mechanism's rebound distance and prevent moving back bearing capacity, not only improve the research and development improvement efficiency of packer greatly, but also manifold cycles utilizes, has greatly reduced testing cost. In addition, resilience force of the rubber sleeve is simulated through restoring force of the compression spring, spring materials and performance can be adjusted according to various performances such as resilience force of the packer rubber sleeve, and resilience distance after the locking mechanism is unloaded is detected. The testing device provided by the invention has the advantages of simple structure, convenience in operation, safety and reliability, and can well simulate the packer construction process.
Application No.: 201721091409.4 discloses a high temperature resistant self-sealing packer rubber tube experimental tool, which comprises a pressure testing cylinder, a rubber tube component and a locking mechanism, wherein the rubber tube component and the locking mechanism are arranged in the pressure testing cylinder; the locking mechanism comprises a locking ring connected with the inner wall of the pressure test barrel through external threads and a mandrel arranged below the locking ring, and a screw rod matched with the locking ring is arranged at the upper end of the mandrel; the packing element sets up the outside of dabber, including respectively with dabber outer wall with the sealed packing element of pressure testing barrel inner wall, the lower part of packing element is provided with right the packing element plays the clamping ring that supports sealed effect, the lower part of clamping ring with dabber fixed connection. The utility model discloses can solve the self sealss packing element high temperature resistant sealing performance test, solve after the test because the packing element warp serious unable scheduling problem of taking out, improved the operational reliability, improved work efficiency.
Technical scheme and the technical problem that will solve and the beneficial effect who produces of above disclosure technique all with the utility model discloses inequality, to the utility model discloses more technical characteristics and the technical problem and the beneficial effect that will solve all do not have the technological inspiration in the above technical document that discloses.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hot recovery packing element locking test device can simulate the stress state and the temperature resistant state of packer packing element when actual application in the pit, surveys sealed effect and the correlation performance of packing element under this temperature and stress state simultaneously. The device needs to adopt the toper to detain between the sealed connecting piece and connect, avoids the rubber ring sealed, adopts to detain sealed, avoids when experimental, and other seal structure are to the interference of packing element test performance. The device can cooperate with other experimental measuring devices, realizes the monitoring to packing element test result, provides the basis for the design and the application of packing element.
In order to achieve the above purpose, the present invention adopts the following technical scheme, a thermal recovery packing element locking test device, which comprises a packing element, a locking mechanism, a packing element inner tube, wherein the packing element and the locking mechanism are all sleeved on the outer wall of the packing element inner tube, the upper end of the locking mechanism is in contact with the lower end surface of the packing element, the thermal recovery packing element locking test device further comprises an upper pressure test coupling, a test sleeve and a lower pressure test coupling, the upper end of the test sleeve is connected with the upper pressure test coupling in a conical buckle manner, the lower end of the test sleeve is connected with the lower pressure test coupling in a conical buckle manner, the upper end of the packing element inner tube is connected with the upper pressure test coupling in a conical buckle manner, an integrally formed bearing platform is arranged on the packing element inner tube, wherein the part of the bearing platform, which is positioned inside the packing element inner tube, is called a blind plate which completely seals the inner cavity of the packing element inner tube, so that the, outer ring external diameter of table is less than the test sleeve internal diameter, packing element up end top is on outer ring off-table terminal surface, go up the pressure testing coupling and set up the last capillary thread connection hole that the axial link up, the radial passageway that overflows that link up is set up to the packing element inner tube, go up the epicoele of capillary thread connection hole, packing element inner tube, overflow passageway, test sleeve up end mouth be the connected state in proper order, the lower capillary thread connection hole that the axial link up is set up to the pressure testing coupling down, the capillary thread connection hole is connected the port and is connected state under the test sleeve.
Go up inside the seting up concentric big-calibre toper chamber and the last small-bore toper chamber of going up of pressure testing coupling, go up big-bore toper chamber inner wall and go up the small-bore toper chamber inner wall and all set up the toper internal thread, the toper external screw thread is seted up to packing element inner tube upper end outer wall, and the toper external screw thread of packing element inner tube upper end and the toper internal thread accordant connection in last pressure testing coupling small-bore toper chamber are detained for the toper and are connected, the toper external screw thread is seted up to test sleeve pipe upper end outer wall, and the toper external screw thread of test sleeve pipe and the toper internal thread accordant connection in last pressure testing coupling big-bore toper.
The inner part of the lower pressure test coupling is provided with a lower large-caliber conical cavity, the inner wall of the lower large-caliber conical cavity is provided with a conical internal thread, the outer wall of the lower end of the test sleeve is provided with a conical external thread, and the conical external thread of the test sleeve is in matched connection with the conical internal thread of the lower pressure test coupling large-caliber conical cavity and is in conical buckle connection.
The locking mechanism comprises a blocking ring, a locking ring and a locking ring seat, the upper end of the blocking ring props against the lower end face of the rubber cylinder, the locking ring seat drags the lower end of the locking ring, and the inner wall of the upper end of the locking ring seat is in threaded connection with the outer wall of the lower end of the blocking ring.
the inner wall of the locking ring is provided with an inner serrated fastener, the outer wall of the inner pipe of the rubber cylinder is provided with an outer serrated fastener, and the locking ring is connected with the inner pipe of the rubber cylinder in a serrated fastener mode.
The upper end of the locking ring props against the lower end face of the blocking ring, and the lower end face of the locking ring is dragged by an inner ring table on the inner wall of the locking ring seat.
The outer diameter of the baffle ring and the outer diameter of the lock ring seat are both smaller than the inner diameter of the test sleeve.
Compared with the prior art, the utility model following beneficial effect has:
The inner cavity of the upper pressure test coupling is connected with the upper end of the inner tube of the rubber cylinder, the outer cavity of the upper pressure test coupling is connected with the upper end of the test sleeve, the axis position of one end of the upper pressure test coupling is provided with the capillary steel tube coupling, and the connecting parts of the capillary steel tube coupling are connected through taper buckles to realize sealing. The length of the connecting part between the upper end of the inner tube of the rubber cylinder and the upper pressure test coupling is greater than the length of the inner cavity of the upper pressure test coupling, an overflowing channel is arranged between the upper end of the inner tube of the rubber cylinder and the connecting part of the upper pressure test coupling, the channel is positioned outside the connecting part between the upper pressure test coupling and the inner tube of the rubber cylinder, the connecting end between the inner tube of the rubber cylinder and the upper pressure test coupling is provided with a bearing platform, the outer diameter of the bearing platform is smaller than the inner diameter of the test sleeve, and the lower end of the inner tube. The test rubber cylinder is placed on the rubber cylinder inner tube and is in contact with a bearing platform at the upper end of the rubber cylinder inner tube, and the stop ring and the lock ring of the locking mechanism are arranged at the horse-tooth buckle of the rubber cylinder inner tube at the other end of the test rubber cylinder, so that the locking function of the test rubber cylinder after the seat sealing and compression in the later period is realized. When the rubber cylinder needs to be tested, the testing rubber cylinder is firstly arranged on the inner tube of the rubber cylinder, the end face of the testing rubber cylinder is in contact with the bearing platform of the inner tube of the rubber cylinder, then the stop ring and the locking ring are tightened, and finally the locking ring seat is tightened. And then, the hydraulic cylinder is used for pushing the sealing rubber cylinder of the lock ring seat, the locking mechanism is used for locking, then the hydraulic cylinder is dismounted, and the lower pressure test coupling is connected with the lower end of the test sleeve, so that the test sleeve is assembled. When the rubber cylinder is in a sealed state and is subjected to a pressure bearing test, the device is placed into a test box, a pressure test pump is connected to the capillary hole 1, steam is injected, the pressure is increased to 25MPa, the pressure is stabilized, the rubber cylinder is tested to bear the pressure bearing condition, and meanwhile, the capillary hole 2 is used for measuring the leakage quantity condition of the rubber cylinder; when a pressure bearing test is carried out, the device is placed into a test box, a pressure test pump is connected to the capillary hole 2, steam is injected, the pressure is increased to 25MPa, the pressure is stabilized, the pressure bearing condition of the test rubber cylinder is realized, and meanwhile, the capillary hole 1 is used for measuring the leakage quantity condition of the rubber cylinder. The device needs to adopt the toper to detain between the sealed connecting piece and connect, avoids the rubber ring sealed, adopts to detain sealed, avoids when experimental, and other seal structure are to the interference of packing element test performance. The device can cooperate with other experimental measuring devices, realizes the monitoring to packing element test result, provides the basis for the design and the application of packing element.
Drawings
Fig. 1 is the structural schematic diagram of the thermal recovery packing element locking test device of the utility model.
The labels in the figure are: go up pressure testing coupling 1, packing element inner tube 2, experimental sleeve pipe 3, packing element 4 keeps off ring 5, lock ring 6, lock ring seat 7, pressure testing coupling 8 down, lower capillary thread connects hole 9, goes up capillary thread and connects hole 10, load-bearing platform 21.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution:
A thermal recovery rubber cylinder locking test device comprises a rubber cylinder 4, a locking mechanism and a rubber cylinder inner tube 2, wherein the rubber cylinder and the locking mechanism are sleeved on the outer wall of the rubber cylinder inner tube 2, the upper end of the locking mechanism is in contact with the lower end face of the rubber cylinder, the thermal recovery rubber cylinder locking test device further comprises an upper pressure test coupling 1, a test sleeve 3 and a lower pressure test coupling 8, the upper end of the test sleeve is connected with the upper pressure test coupling in a conical buckle mode, the lower end of the test sleeve is connected with the lower pressure test coupling in a conical buckle mode, the upper end of the rubber cylinder inner tube is connected with the upper pressure test coupling in a conical buckle mode, an integrally formed bearing platform 21 is arranged on the rubber cylinder inner tube, the part, located inside the rubber cylinder inner tube, of the bearing platform is called a blind plate, the blind plate completely seals the inner cavity of the rubber cylinder inner tube, the inner cavity of the rubber cylinder is divided into a lower cavity and an upper cavity, the packing element up end pushes up on outer annular platform down terminal surface, go up the pressure testing coupling and set up the last capillary thread connection hole 10 that the axial is link up, the packing element inner tube sets up the passageway that overflows that radially link up, go up the epicoele of capillary thread connection hole, packing element inner tube, overflow passageway, experimental sleeve pipe up end mouth and be the connected state in proper order, the lower capillary thread connection hole 9 that the axial is link up is set up to pressure testing coupling down, the capillary thread connection hole is connected the state with the experimental sleeve pipe down port.
Go up that pressure testing coupling 1 is inside to set up concentric last heavy-calibre toper chamber and last small-bore toper chamber, go up heavy-calibre toper chamber inner wall and go up small-bore toper chamber inner wall and all set up the toper internal thread, toper external screw thread is seted up to 2 upper end outer walls of packing element inner tube, and the toper external screw thread of packing element inner tube upper end and the toper internal thread accordant connection in last pressure testing coupling small-bore toper chamber are detained for the toper and are connected, the toper external screw thread is seted up to test sleeve pipe upper end outer wall, and the toper external screw thread of test sleeve pipe 3 and the toper internal thread accordant connection in last pressure testing coupling large-bore toper chamber are detain.
The inside heavy-calibre toper chamber of setting down of pressure testing coupling 8 down, the toper internal thread is seted up to heavy-calibre toper intracavity wall down, the toper external screw thread is seted up to 3 lower extreme outer walls of experimental sleeve pipe, and the toper external screw thread of experimental sleeve pipe is detained for the toper with the toper internal thread accordant connection in pressure testing coupling heavy-calibre toper chamber down. Under the condition, the outer wall of the lower end of the inner pipe of the rubber cylinder is not in contact with the inner wall of the lower pressure test coupling, and a gap is formed, so that the threaded connection hole of the lower capillary is communicated with the lower port of the test sleeve. Certainly, the inside small-bore conical cavity that also can set up again of pressure testing coupling down, toper internal thread is set up to this small-bore conical cavity inner wall, then the toper external screw thread is set up to packing element inner tube lower extreme outer wall, packing element inner tube lower extreme toper external screw thread and the toper internal thread accordant connection in pressure testing coupling small-bore conical cavity down, form the toper and detain the connection, under this kind of condition, as long as set up again at the packing element inner tube one radially link up down overflow the passageway can, should overflow the passageway down as long as guarantee under the capillary thread connects the hole, the lower chamber of packing element inner tube, the port is the connected state just can for communicating state in proper order under the.
The locking mechanism comprises a blocking ring 5, a locking ring 6 and a locking ring seat 7, the upper end of the blocking ring props against the lower end face of the rubber cylinder, the locking ring seat drags the lower end of the locking ring, and the inner wall of the upper end of the locking ring seat is in threaded connection with the outer wall of the lower end of the blocking ring.
An inner serrated fastener is arranged on the inner wall of the locking ring 6, an outer serrated fastener is arranged on the outer wall of the inner pipe of the rubber cylinder, and the locking ring is connected with the inner pipe of the rubber cylinder in a serrated fastener mode.
The upper end of the locking ring 6 props against the lower end face of the blocking ring, and the lower end face of the locking ring is dragged by an inner ring table on the inner wall of the locking ring seat.
The outer diameter of the baffle ring 5 and the outer diameter of the lock ring seat 7 are both smaller than the inner diameter of the test sleeve 3.
The inner cavity of the upper pressure test coupling 1 is connected with the upper end of the inner tube 2 of the rubber cylinder, the outer cavity is connected with the upper end of the test sleeve 3, a capillary hole 1 is arranged at the central shaft of the upper pressure test coupling 1, and the upper pressure test coupling 1, the inner tube 2 of the rubber cylinder and the test sleeve 3 are connected through conical buckles to realize sealing; a bearing platform 21 is arranged at the upper end of the rubber cylinder inner tube 2, the outer diameter of the bearing platform 21 is smaller than the inner diameter of the test inner tube 3, an overflowing channel is arranged between the bearing platform 21 and the serrated buckle at the upper end of the rubber cylinder inner tube 2, and when the upper end of the rubber cylinder inner tube 2 is connected with the inner cavity of the upper pressure test coupling 1, the channel is positioned outside the inner cavity of the upper pressure test coupling 1; during the test, the rubber cylinder 4 is placed on the bearing platform 21 at the upper end of the rubber cylinder inner tube 2, the lower end of the rubber cylinder inner tube 2 is provided with the one-way horse-tooth buckle, and the stop ring 5, the lock ring 6 and the lock ring seat 7 are fastened after the rubber cylinder 4 is assembled. After the rubber cylinder 4 is assembled, the locking ring seat 7 is pushed by the hydraulic cylinder to seal the rubber cylinder 4, so that the rubber cylinder 4 and the test sleeve 3 are sealed in a setting manner, the rubber cylinder is locked by the locking mechanism, then the hydraulic cylinder is dismounted, and the lower pressure test coupling 8 is connected with the lower end of the test sleeve 3 and assembled. When the rubber cylinder 4 is in a sealed state and is subjected to a pressure bearing test, the device is placed into a test box, a pressure test pump is connected to the threaded connection hole 10 of the upper capillary tube, steam is injected, the pressure is increased to 25MPa, the pressure is stabilized, the rubber cylinder 4 is tested to bear the pressure bearing condition, and meanwhile, the leakage condition of the rubber cylinder 4 is measured through the threaded connection hole 9 of the lower capillary tube; when the pressure bearing test is carried out, the device is placed into a test box, the threaded connection hole 9 of the lower capillary is connected with a pressure test pump, steam is injected, the pressure is increased to 25MPa and stabilized, the pressure bearing condition of the test rubber cylinder is realized, and meanwhile, the threaded connection hole 10 of the upper capillary is used for measuring the leakage condition of the rubber cylinder 4.
The device needs to adopt the toper to detain between the sealed connecting piece and connect, avoids the rubber ring sealed, adopts to detain sealed, avoids when experimental, and other seal structure are to the interference of packing element test performance.
The device can cooperate with other experimental measuring devices, realizes the monitoring to packing element test result, provides the basis for the design and the application of packing element.
In the description of the present invention, it should be understood that the orientation indication or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description of the present invention, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A thermal recovery rubber cylinder locking test device comprises a rubber cylinder, a locking mechanism and a rubber cylinder inner tube, wherein the rubber cylinder and the locking mechanism are sleeved on the outer wall of the rubber cylinder inner tube, the upper end of the locking mechanism is in contact with the lower end surface of the rubber cylinder, the thermal recovery rubber cylinder locking test device is characterized by further comprising an upper pressure test coupling, a test sleeve and a lower pressure test coupling, the upper end of the test sleeve is connected with the upper pressure test coupling in a conical buckle mode, the lower end of the test sleeve is connected with the lower pressure test coupling in a conical buckle mode, the upper end of the rubber cylinder inner tube is connected with the upper pressure test coupling in a conical buckle mode, an integrally formed bearing platform is arranged on the rubber cylinder inner tube, the part, located inside the rubber cylinder inner tube, of the bearing platform is called a blind plate, the blind plate completely seals the inner cavity of the rubber cylinder inner tube to enable the inner tube to be divided into an upper cavity and a lower cavity, the part, the upper end face of the rubber sleeve props against the lower end face of the outer ring-shaped platform, the upper pressure testing coupling is provided with an upper capillary thread connection hole which is axially communicated, the inner tube of the rubber sleeve is provided with an overflowing channel which is radially communicated, the upper capillary thread connection hole, the upper cavity of the inner tube of the rubber sleeve, the overflowing channel and the upper port of the test sleeve are sequentially communicated, the lower pressure testing coupling is provided with a lower capillary thread connection hole which is axially communicated, and the lower port of the lower capillary thread connection hole and the lower port of the test sleeve are communicated.
2. The thermal recovery packing element locking test device of claim 1, wherein the upper pressure test coupling is provided with an upper large-caliber conical cavity and an upper small-caliber conical cavity which are concentric with each other, the inner wall of the upper large-caliber conical cavity and the inner wall of the upper small-caliber conical cavity are provided with conical inner threads, the outer wall of the upper end of the inner tube of the packing element is provided with a conical outer thread, the conical outer thread of the upper end of the inner tube of the packing element is in matching connection with the conical inner thread of the small-caliber conical cavity of the upper pressure test coupling and is in conical buckle connection, the outer wall of the upper end of the test sleeve is provided with a conical outer thread, and the conical outer thread of the test sleeve is in matching connection with the conical inner thread of the large-.
3. The thermal recovery packing element locking test device of claim 2, wherein the lower pressure test coupling is internally provided with a lower large-caliber conical cavity, the inner wall of the lower large-caliber conical cavity is provided with a conical internal thread, the outer wall of the lower end of the test sleeve is provided with a conical external thread, and the conical external thread of the test sleeve is in matching connection with the conical internal thread of the lower pressure test coupling large-caliber conical cavity and is in conical buckle connection.
4. The thermal recovery rubber cylinder locking test device according to claim 1, 2 or 3, characterized in that the locking mechanism comprises a stop ring, a locking ring and a locking ring seat, the upper end of the stop ring is against the lower end face of the rubber cylinder, the locking ring seat drags the lower end of the locking ring, and the inner wall of the upper end of the locking ring seat is in threaded connection with the outer wall of the lower end of the stop ring.
5. The thermal recovery packing element locking test device according to claim 4, wherein the inner wall of the locking ring is provided with an inner serrated fastener, the outer wall of the inner tube of the packing element is provided with an outer serrated fastener, and the locking ring and the inner tube of the packing element are connected in a serrated fastener manner.
6. The thermal recovery rubber cylinder locking test device according to claim 5, wherein the upper end of the locking ring is against the lower end face of the stop ring, and the lower end face of the locking ring is dragged by the inner ring table on the inner wall of the locking ring seat.
7. The thermal recovery rubber cylinder locking test device according to claim 5 or 6, wherein the outer diameter of the baffle ring and the outer diameter of the locking ring seat are both smaller than the inner diameter of the test sleeve.
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| CN201920448975.9U CN209764342U (en) | 2019-04-03 | 2019-04-03 | Thermal recovery packing element locking test device |
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| CN201920448975.9U CN209764342U (en) | 2019-04-03 | 2019-04-03 | Thermal recovery packing element locking test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113916674A (en) * | 2021-10-28 | 2022-01-11 | 江南工业集团有限公司 | U-shaped cylinder pressure test device and test method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113916674A (en) * | 2021-10-28 | 2022-01-11 | 江南工业集团有限公司 | U-shaped cylinder pressure test device and test method |
| CN113916674B (en) * | 2021-10-28 | 2023-12-26 | 江南工业集团有限公司 | U-shaped cylinder pressure test device and test method |
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