CN214425411U - Sealing device on connecting pipe during nitrogen charging protection of safety injection box - Google Patents
Sealing device on connecting pipe during nitrogen charging protection of safety injection box Download PDFInfo
- Publication number
- CN214425411U CN214425411U CN202023090450.4U CN202023090450U CN214425411U CN 214425411 U CN214425411 U CN 214425411U CN 202023090450 U CN202023090450 U CN 202023090450U CN 214425411 U CN214425411 U CN 214425411U
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- sleeve
- sealing
- connecting pipe
- blocking
- connecting rod
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Abstract
The utility model discloses a sealing device on a connecting pipe during nitrogen filling protection of a safety injection box, which comprises a connecting rod, a sealing sleeve made of flexible material, a baffle sleeve and a nut, wherein the outer wall of the lower end part of the connecting rod is provided with a blocking seat, and the outer wall of the upper end part of the connecting rod is provided with a thread; the spacer sleeve includes: the top of the retaining sleeve body is provided with a retaining ring which protrudes outwards, and the shape of the bottom of the retaining ring is matched with the groove of the opening part of the connecting pipe; the sealing sleeve and the blocking sleeve are sleeved on the connecting rod, the blocking sleeve is positioned above the sealing sleeve, the bottom of the sealing sleeve is blocked on the blocking seat, and the nut is in threaded connection with the upper end portion of the connecting rod. The utility model has the advantages that: simple structure is practical, and installation and dismantlement are all very convenient. The pipe can be well sealed, so that the nitrogen protection effect of the safety injection box is improved. The retaining ring plays a role in protecting the groove of the joint pipe, so that the damage of the joint pipe is avoided, the groove of the joint pipe can be pre-processed, and the workload during field installation is greatly reduced.
Description
Technical Field
The utility model relates to a ann among the nuclear reaction equipment annotates case technical field, sealing device on the takeover when concretely relates to ann annotates case and fills nitrogen protection.
Background
The safety injection tank is one of important devices of an active reactor core cooling system of a nuclear power plant, and the manufacturing process is complex. The connecting pipes used for being connected with the outside on the safety injection box are numerous, in order to reduce the workload of on-site welding and cutting, a groove at the interface of each connecting pipe is processed in advance, and in order to protect the safety injection box, nitrogen gas needs to be filled into the processed installation box.
Therefore, it is necessary to develop a sealing device which can effectively seal and protect the groove at each connection pipe.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: the sealing device on the connecting pipe during nitrogen filling protection of the safety injection box is good in sealing effect and can well protect the groove of the connecting pipe.
In order to achieve the above object, the utility model adopts the following technical scheme: the sealing device on the connecting pipe during nitrogen filling protection of the safety injection box comprises a connecting rod, a sealing sleeve made of flexible materials, a blocking sleeve and a nut, wherein a circle of outward-protruding blocking seat is arranged on the outer wall of the lower end part of the connecting rod, and threads are arranged on the outer wall of the upper end part of the connecting rod; the spacer sleeve includes: the top of the retaining sleeve body is provided with a retaining ring which protrudes outwards, and the shape of the bottom of the retaining ring is matched with the groove of the opening part of the connecting pipe; the sealing sleeve and the blocking sleeve are sleeved on the connecting rod, the blocking sleeve is located above the sealing sleeve, the bottom of the sealing sleeve is blocked on the blocking seat, and the nut is in threaded connection with the upper end portion of the connecting rod above the blocking sleeve.
Further, in the sealing device on the connecting pipe during nitrogen filling protection of the safety injection box, the top surface of the blocking seat is a sealing conical surface with the diameter gradually reduced from bottom to top, and the bottom of the sealing sleeve is a bottom sealing surface with the diameter gradually increased from top to bottom, wherein the diameter of the bottom sealing surface is matched with that of the sealing conical surface.
Further, in the sealing device on the connecting pipe during nitrogen filling protection of the safety injection box, the bottom of the retainer ring is sequentially provided with a straight first retaining surface and an inclined surface which inclines from top to bottom and outwards from inside to outside, and the groove at the opening part of the connecting pipe sequentially comprises a straight top and a conical side part with the diameter gradually increasing from top to bottom from inside to outside; the check ring can be arranged on the groove of the opening of the connecting pipe in a blocking way, and the length of the inclined plane at the bottom of the check ring is longer than the side part of the groove of the connecting pipe.
Furthermore, the sealing device on the connecting pipe during nitrogen filling protection of the safety injection box is characterized in that the bottom of the blocking sleeve and the top of the sealing sleeve are both flat planes, and the bottom of the blocking sleeve is blocked on the top of the sealing sleeve in a sealing mode.
Further, sealing device on the takeover when aforementioned ann's notes case fills nitrogen protection, wherein, the seal cover adopts the ox muscle material.
The utility model has the advantages that: simple structure is practical, and installation and dismantlement are all very convenient. The pipe can be well sealed, so that the nitrogen protection effect of the safety injection box is improved. The retaining ring plays a role in protecting the groove of the connecting pipe, the groove of the connecting pipe is prevented from being damaged in the processes of transportation, hoisting and the like, and the groove of the connecting pipe can be pre-processed, so that the workload during field installation is greatly reduced.
Drawings
FIG. 1 is a schematic structural diagram of a connecting rod in a sealing device on a connecting pipe during nitrogen filling protection of a safety injection tank.
Fig. 2 is a schematic structural diagram of a spacer sleeve in a sealing device on a connecting pipe during nitrogen filling protection of the safety injection tank.
Fig. 3 is a schematic view of the installation structure of the sealing device on the connecting pipe during nitrogen filling protection of the safety injection tank of the present invention.
Detailed Description
The invention will be described in further detail with reference to the drawings and preferred embodiments.
As shown in fig. 1, 2 and 3, the sealing device on the connecting pipe during nitrogen protection of the safety injection tank comprises a connecting rod 1, a sealing sleeve 2 made of flexible material, a blocking sleeve 3 and a nut 4. The sealing sleeve 2 is made of a beef tendon material. The outer wall of the lower end part of the connecting rod 1 is provided with a circle of clamping and blocking seat 11 protruding outwards, and the outer wall of the upper end part of the connecting rod 1 is provided with threads. The spacer 3 includes: the retaining sleeve comprises a retaining sleeve body 31, a retaining ring 32 protruding outwards is arranged at the top of the retaining sleeve body 31, and the shape of the bottom of the retaining ring 32 is matched with the groove at the opening of the connecting pipe 5. Seal cover 2 and spacer 3 all suit are on connecting rod 1, spacer 3 be located the top of seal cover 2, the bottom of spacer 3 and the top of seal cover 2 are straight plane, the bottom sealing card of spacer 3 keep off at the top of seal cover 2. The bottom of the sealing sleeve 2 is blocked on the blocking seat 11, and in order to improve the sealing effect, the top surface of the blocking seat 11 is a sealing conical surface 111 with the diameter gradually reduced from bottom to top. The nut 4 is in threaded connection with the upper end part of the connecting rod 1 above the blocking sleeve 3.
The bottom of the retainer ring 32 is sequentially provided with a straight first retaining surface 321 and an inclined surface 322 which is inclined from top to bottom and is inclined outwards from inside to outside, and the groove of the opening of the connecting pipe 5 sequentially comprises a straight top part 51 and a conical side part 52 with gradually increased diameter from top to bottom. The retainer ring 32 can be arranged on the groove of the opening of the connecting pipe 5 in a blocking way, and the length of the inclined plane 322 at the bottom of the retainer ring 32 is longer than that of the side part 52 of the groove of the connecting pipe 4.
The working principle is as follows: after the cylinder of the safety injection box equipment is processed, nitrogen is needed to be injected for protection, as long as the sealing device is arranged in the connecting pipe on the installation box, the connecting rod 1, the sealing sleeve 2, the blocking sleeve 3 and the nut 4 are assembled and are inserted into the connecting pipe 5, the blocking ring 32 of the blocking sleeve 3 is blocked on the groove of the connecting pipe 5, and then the nut 4 is screwed down, so that the sealing sleeve 2 is expanded and sealed in the pipe wall of the connecting pipe 5.
The utility model has the advantages that: simple structure is practical, and installation and dismantlement are all very convenient. The pipe 5 can be well sealed, so that the nitrogen protection effect of the safety injection box is improved. The retaining ring 32 plays a role in protecting the groove of the connecting pipe 5, and the groove of the connecting pipe is prevented from being damaged in the processes of transportation, hoisting and the like, so that the groove of the connecting pipe 5 can be pre-processed, and the workload during field installation is greatly reduced.
Claims (5)
1. Sealing device on takeover when ann annotates case nitrogen filling protection, its characterized in that: the connecting rod comprises a connecting rod, a sealing sleeve made of flexible materials, a blocking sleeve and a nut, wherein a circle of blocking seat protruding outwards is arranged on the outer wall of the lower end part of the connecting rod, and threads are arranged on the outer wall of the upper end part of the connecting rod; the spacer sleeve includes: the top of the retaining sleeve body is provided with a retaining ring which protrudes outwards, and the shape of the bottom of the retaining ring is matched with the groove of the opening part of the connecting pipe; the sealing sleeve and the blocking sleeve are sleeved on the connecting rod, the blocking sleeve is located above the sealing sleeve, the bottom of the sealing sleeve is blocked on the blocking seat, and the nut is in threaded connection with the upper end portion of the connecting rod above the blocking sleeve.
2. The sealing device on the connecting pipe during nitrogen filling protection of the safety injection tank according to claim 1, characterized in that: the top surface of the blocking seat is a sealing conical surface with the diameter gradually reduced from bottom to top, and the bottom of the sealing sleeve is a bottom sealing surface with the diameter gradually increased from top to bottom, and the diameter of the bottom sealing surface is matched with that of the sealing conical surface.
3. The sealing device on the connecting pipe during nitrogen filling protection of the safety injection tank according to claim 1 or 2, characterized in that: the bottom of the retainer ring is sequentially provided with a straight first retaining surface and an inclined surface which inclines outwards from top to bottom from inside to outside, and the groove of the opening part of the connecting pipe sequentially comprises a straight top and a conical side part with the diameter gradually increasing from top to bottom from inside to outside; the check ring can be arranged on the groove of the opening of the connecting pipe in a blocking way, and the length of the inclined plane at the bottom of the check ring is longer than the side part of the groove of the connecting pipe.
4. The sealing device on the connecting pipe during nitrogen filling protection of the safety injection tank according to claim 3, characterized in that: the bottom of the blocking sleeve and the top of the sealing sleeve are both flat planes, and the bottom of the blocking sleeve is sealed and blocked at the top of the sealing sleeve.
5. The sealing device on the connecting pipe during nitrogen filling protection of the safety injection tank according to claim 1 or 2, characterized in that: the sealing sleeve is made of beef tendon material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023090450.4U CN214425411U (en) | 2020-12-21 | 2020-12-21 | Sealing device on connecting pipe during nitrogen charging protection of safety injection box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023090450.4U CN214425411U (en) | 2020-12-21 | 2020-12-21 | Sealing device on connecting pipe during nitrogen charging protection of safety injection box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214425411U true CN214425411U (en) | 2021-10-19 |
Family
ID=78053583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023090450.4U Active CN214425411U (en) | 2020-12-21 | 2020-12-21 | Sealing device on connecting pipe during nitrogen charging protection of safety injection box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214425411U (en) |
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2020
- 2020-12-21 CN CN202023090450.4U patent/CN214425411U/en active Active
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