CN212900956U - an emergency inflatable device - Google Patents

Abstract

The utility model relates to an emergency inflating device, which is used for emergency inflating an inflatable sealing ring on a water gate, and comprises an air source supply assembly for supplying an air source; The gas supply pipeline connected to the original gas supply device of the gas; the pressure regulating component arranged on the gas supply pipeline to adjust the gas pressure output by the gas supply pipeline; the safety valve arranged on the gas supply pipeline; set One-way valve on the gas supply pipeline. The emergency inflatable device does not need to disassemble the pipeline when it is used, and the gas supply switching is stable, the functions are diversified, and the reliability is strong.

Description

an emergency inflatable device

technical field

The utility model relates to the technical field of nuclear power, in particular to an emergency inflatable device.

Background technique

The reactor building water gate (PTR000BU) is used for isolation when the reactor pool and the component pool are separately filled with water. As shown in Figure 1, when the reactor pool or component pools are separately filled with water due to the need for refueling of the reactor, the sluice gate is hoisted from the storage position to the door frame between the reactor pool and the component pools by means of a ring hoist, and the public compressed air distribution system is connected. (SAT), connect the pipeline 2 of the compressed air distribution system (SAT) with the inflatable sealing ring 1 to inflate, so that the inflatable sealing ring 1 installed on the water gate expands, and forms a sealing isolation with the inner wall of the door frame to ensure that any one Water on one side does not flow into the other side.

When the compressed air production system (SAP) or the public compressed air distribution system (SAT) of the nuclear power plant needs to be repaired, the water gate between the reactor pool and the component pool of the reactor building will lose air supply, and the sealing performance of the water gate will not be able to Ensure that the water on the side with water will leak to the side without water, which will endanger the personal safety of maintenance personnel and equipment safety. At this time, it is necessary to temporarily supply air to the sluice gate to ensure the tightness of the sluice gate until the overhaul of the SAT system is completed. In the past, the temporary gas supply was generally to remove the SAT gas supply pipe and connect a small air compressor to supply gas to the water gate. Please refer to Figure 2. This method is generally planned during the downtime of the SAT system. If there are defects or other needs, this method has the disadvantages of not being able to supply gas quickly, not responding in time, poor safety, and inconvenient use, etc., and cannot fully meet the needs of the site.

Utility model content

The technical problem to be solved by the utility model is to provide an improved emergency inflation device.

The technical solution adopted by the utility model to solve the technical problem is: constructing an emergency inflating device for emergency inflating the inflatable sealing ring on the water gate, including an air source supply assembly for supplying an air source; and the air source supply assembly an air supply pipeline connected to the original air supply device that supplies air to the inflatable sealing ring; a pressure regulating component arranged on the air supply pipeline to adjust the gas pressure output by the air supply pipeline; A safety valve on the gas supply pipeline; a one-way valve arranged on the gas supply pipeline.

Preferably, the air source supply assembly includes a plurality of air compressors which are arranged independently of each other and stand by for each other.

Preferably, the gas supply pipeline includes a main pipe section and a plurality of branch pipe sections arranged on the main pipe section and communicating with the main pipe section;

Each of the branch pipe sections is correspondingly connected to each of the air compressors;

The one-way valve and the safety valve are arranged in sequence along the gas output direction.

Preferably, an air supply valve is correspondingly provided on each of the branch pipe sections.

Preferably, each of the branch pipe sections is correspondingly provided with a first pressure gauge.

Preferably, a second pressure gauge is provided on the main pipe section.

Preferably, a filter is provided on the main pipe section.

Preferably, the pressure regulating assembly includes a pressure reducing valve arranged on the main pipe section.

Preferably, one end of the main pipe section away from the branch pipe section is connected to the pressure relief port of the original gas supply device.

Preferably, there are two air compressors,

There are two branch pipe sections, and the two branch pipe sections are respectively located at one end of the main pipe section.

Implementing the emergency inflatable device of the present utility model has the following beneficial effects: the emergency inflatable device connects the air supply pipeline connected with the air source supply assembly to the original air supply device for supplying air to the inflatable sealing ring, without dismantling the original air supply device. Some gas supply devices and pipelines are used, which can facilitate use, improve gas supply efficiency and save costs. By arranging a pressure regulating component on the air supply pipeline, the air supply pressure can be adjusted to be equivalent to the pressure of the inflatable sealing ring, thereby avoiding affecting the sealing performance of the inflatable sealing ring and improving the safety of use. By arranging a safety valve on the air supply pipeline, the overpressure of the inflatable sealing ring can be prevented from being damaged, and the service life and safety performance of the inflatable sealing ring can be improved. In addition, by setting a one-way valve, it can be ensured that in extreme cases, the pressure of the water gate will not drop instantaneously, and the sealing performance can be prevented from being affected.

Description of drawings

The utility model will be further described below in conjunction with the accompanying drawings and embodiments, in the accompanying drawings:

Fig. 1 is the structural representation of the existing air supply device;

Fig. 2 is the state schematic diagram of the emergency inflation of the existing emergency inflation device;

3 is a schematic structural diagram of an emergency inflatable device according to some embodiments of the present invention.

Detailed ways

In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

Figure 3 shows some preferred embodiments of the emergency inflatable device of the present invention. The emergency air supply device can be used to inflate the inflatable sealing ring 1 on the water gate. After the water gate is replaced regularly, because the SAT in the nuclear island has been shut down, the emergency air supply device can be used to verify the inflatable sealing ring 1 of the water gate. tightness. The emergency inflatable device can increase the reliability of the inflatable sealing ring of the water gate of the reactor. The emergency inflatable device has the functions of emergency air supply to the water gate, reducing the pressure of the air supply system, preventing the overpressure of the inflatable sealing ring 1, and starting when the inflatable sealing ring 1 is under pressure. Alarm device and other functions. The emergency inflatable device does not need to disassemble the pipeline when it is used, and the gas supply switching is stable, the functions are diversified, and the reliability is strong.

As shown in FIG. 3 , in some embodiments, the emergency inflation device may include an air supply assembly 10 and an air supply pipeline 20 . The air source supply assembly 10 can be used to provide the air source for the gas-filled sealing ring 1 . The air supply pipe 20 can be connected with the air supply assembly 10 and the inflatable sealing ring 1 , and can be used to deliver the gas output from the air supply assembly 10 to the inflatable sealing ring 1 to inflate the inflatable sealing ring.

Further, in some embodiments, the air source supply assembly 10 may be a plurality of air compressors 11, specifically, in some embodiments, the air compressors 11 may be two, and the two air compressors may be Set up independently of each other and can be used as backup for each other. Of course, it can be understood that in other embodiments, the number of the air compressors 11 may be one, or the number of the air compressors 11 may be more than two. In some embodiments, the two air compressors can use two different power sources, and by setting the two air compressors, the reliability of the emergency inflation device can be improved. The emergency inflating device adds two air sources through the air supply to the water gate, so that the safety and redundancy of the air supply to the water gate can be high.

Further, in some embodiments, the gas supply pipeline 20 may include a main pipe section 21 and a plurality of branch pipe sections 22 . The main pipe section 21 can deliver the gas from the plurality of branch pipes 22 to the gas-filled sealing ring 1 . The plurality of branch pipes 22 may be disposed on the main pipe section 21, specifically, they may be located at one end of the main pipe section 21 and communicate with the main pipe section 22. The plurality of branch pipes 22 may be arranged corresponding to the air compressor 11 . In some embodiments, the number of branch pipes 22 may be two, and each branch pipe 22 may be connected to one air compressor 11 correspondingly. In some embodiments, one end of the main pipe section 21 away from the branch pipe section 22 can be connected to the pressure relief port of the original gas supply device, so that the original gas supply device does not need to be dismantled.

Further, in some embodiments, an air supply valve 30 may be correspondingly disposed on each branch pipe 22 , the air supply valve 30 is opened, and the air compressor can output gas to the branch pipe 22 . The air supply valve 30 can be a conventional valve.

Further, in some embodiments, a first pressure gauge 40 may be correspondingly disposed on each branch pipe 22, and the first pressure gauge 40 may be disposed between the air supply valve 30 and the air compressor, which can be used for real-time Monitor the gas pressure output by the air compressor.

Further, in some embodiments, a filter 50 may be provided on the main pipe section 21 , and the filter 50 may be used to filter the gas delivered by the air compressor, and the filter 50 may be provided close to the first branch pipe 22 , the filter can be a conventional filter.

Further, in some embodiments, the emergency inflation device may further include a pressure regulating component 60 , which may be disposed on the gas supply pipeline 20 and may be used to adjust the gas pressure output by the inflation pipeline 20 . Specifically, in some embodiments, the pressure regulating assembly 60 may be disposed on the main pipe section 21 . By arranging the pressure regulating assembly 60, the supply air pressure can be adjusted to be equivalent to the pressure of the inflatable sealing ring, thereby avoiding affecting the sealing performance of the inflatable sealing ring, and improving the safety of use. In some embodiments, the pressure regulating component 60 may be a pressure reducing valve, and the pressure reducing valve may be disposed on the main pipe section 21 and located between the filter 50 and the original air supply device. The pressure relief valve can be used to reduce the gas pressure on the main section 21. The pressure reducing valve can be selected from conventional pressure reducing valves.

Further, in some embodiments, a second pressure gauge 70 may be provided on the main pipe section 21 . The second pressure gauge 70 can be located between the pressure reducing valve and the original gas supply device, and can be used to monitor the pressure of the gas delivered by the main pipe section 21 in real time.

Further, in some embodiments, the emergency inflatable device may further include a one-way valve 80 and a safety valve 90, the one-way valve 80 and the safety valve 90 are both disposed on the gas supply pipeline 20, and along the gas supply pipeline The air supply directions of 20 are set in sequence. The one-way valve 80 and the safety valve 90 are located between the second pressure gauge 70 and the original gas supply device. By arranging the one-way valve 80, it can be ensured that in extreme cases, the pressure of the water gate will not drop instantaneously, and the sealing performance can be prevented from being affected. By arranging the safety valve 90 on the gas supply pipeline, the overpressure of the inflatable sealing ring can be prevented from being damaged, and the service life and safety performance of the inflatable sealing ring can be improved.

When the emergency inflatable device is in use, the air supply valve and inflation valve of the original air supply device can be closed in turn, and the air compressor can be started. The pressure is adjusted by the pressure reducing valve to the pressure that reaches the working range, and then through the check valve 80 and the safety valve 90 (the starting pressure value is 3bar), from the pressure relief port of the original air supply device into the original air supply device loop, open The pressure relief valve in the control cabinet of the original air supply device can be used to supply air to the inflatable sealing ring 1 on the water gate by checking the second pressure gauge 70 and the differential pressure switch.

The operation process used on site is as follows:

1) Transport the two air compressors and the corresponding accessories of the emergency air supply device to the vicinity of the control cabinet of the original air supply device of the water gate, and connect the emergency air supply device to the original air supply device according to the connection diagram in Figure 3 Specifically, connect one end of the main section 21 of the gas supply pipeline 20 to the pressure relief port of the original gas supply device, and then connect the branch section 22 of the gas supply pipeline 20 with two air compressors, two of which are air compressors. Each press is connected to two different power sources;

2) Close the air supply valve in the emergency air supply device, and adjust the pressure reducing valve to the minimum opening:

3) Start 2 air compressors respectively, and slowly open the air supply valve 30 after the pressure gauge has established pressure;

4) Adjust the output pressure of the pressure reducing valve to the pressure of the inflatable sealing ring 1 of the on-site water gate (the reading of the digital pressure gauge in the gas supply cabinet is consistent);

5) Close the air supply valve and inflation valve in the original air supply device, and slowly open the pressure relief valve in the control cabinet of the original air supply device, so that the air supply of the inflatable sealing ring of the water gate can be switched from normal air supply to Air compressor emergency air supply:

When the gas supply of the original gas supply device is restored, the operation of switching the official gas supply is as follows:

Close the pressure relief valve in the original original air supply:

Open the air supply valve in the official original air supply device, and adjust the output pressure of the pressure reducing valve to the normal air supply pressure;

Open the inflation valve of the original gas supply device, and the normal gas supply is completed online.

In order to prevent the original gas supply device from being unstable just after recovery, the emergency gas supply device can be kept untouched, and if necessary, it can be quickly switched to the emergency gas supply device for gas supply.

This emergency inflation device has the following advantages:

① Simple installation: just connect the air outlet of the air supply pipeline to the pressure relief and exhaust port of the original air supply device, without interrupting the original air supply and dismantling the original air supply pipeline;

②High reliability of air supply: Compared with the original single air compressor, two air compressors are used for air supply. The two air compressors use two different power supplies, and the two air compressors are mutually reliable backup Higher sex:

③Stable air supply switching: There is a pressure regulating component in the temporary air supply device, and the air supply pressure can be adjusted to be consistent with the pressure of the inflatable sealing ring before switching the valve, which will not affect the sealing performance.

④High safety: The emergency air supply device also adds a one-way valve and a safety valve, which can ensure that in the extreme case of sudden failure of both air compressors, the inflatable sealing ring of the water gate will not quickly drop pressure and cause sealing performance. Affected: At the same time, it can also ensure that the pressure of the inflatable sealing ring will not exceed the set pressure value:

⑤Multiple functions: Under special working conditions, if the reliability of the air supply of the water gate needs to be strengthened, the emergency inflation device can be directly installed in place, and it can be put into use immediately if necessary; after the water gate is replaced regularly, if you want to Verify the tightness of the sealing ring of the water gate. At this time, the SAT in the nuclear island is often out of service. At this time, the emergency gas supply device can be used.

The application of this emergency air supply device:

1. When the compressed air production system (SAP) or the public compressed air distribution system (SAT) of the nuclear power plant fails and needs to be repaired, the water gate between the reactor pool and the component pool will not be guaranteed to be sealed, and the water on the water side will leak Going to the waterless side will endanger the personal safety of personnel and the safety of equipment. At this time, the device is put into temporary gas supply to ensure the tightness of the water gate and buy time for the emergency repair of the SAP or SAT system. For example, in the overhaul of a nuclear power plant, the use of this device won a 48-hour construction period for the emergency repair of the SAP system;

2. Under special working conditions, when there are special requirements for the tightness of the reactor water gate, the device can be installed for backup, and can be used immediately in an emergency to improve the sealing reliability of the reactor water gate: for example, the 203 overhaul of a nuclear power plant If the fuel loading and unloading trolley fails during the refueling period, the reactor water gate needs to be installed in the reverse direction, and the water in the component pool is emptied for emergency repair. Since there is nuclear fuel in the reactor pool at this time, it must be ensured that the water in the reactor pool does not leak. After installing this device, the water gate can be increased. Two temporary air supply sources enhance the reliability of the water gate.

3. When the original air supply device fails or is unavailable for some reason, this device can be used as an independent air supply device to supply air to the water gate to ensure that the use of the water gate is not affected. For example, after the sluice gate is regularly replaced with inflatable seals for 5 years, the SAT in the nuclear island has been stopped.

The emergency inflation device eliminates the impact on the water gate due to the overhaul of the gas supply system, optimizes the overhaul and overhaul work arrangement, and shortens the overhaul construction period: improves the reliability of the reactor water gate seal, and avoids the water gate due to unstable gas supply. The sealing performance is affected, eliminating equipment and personnel safety hazards.

It can be understood that the above examples only represent the preferred embodiments of the present invention, and the descriptions thereof are more specific and detailed, but should not be construed as a limitation on the scope of the present invention; For technical personnel, under the premise of not departing from the concept of the present utility model, the above-mentioned technical characteristics can be freely combined, and some deformations and improvements can also be made, and these all belong to the protection scope of the present utility model; Equivalent transformations and modifications made within the scope of the claims of the present invention shall fall within the scope of the claims of the present invention.

Claims (10)

1. An emergency inflation device is used for emergency inflation of an inflation sealing ring (1) on a water supply gate and is characterized by comprising an air source supply assembly (10) for supplying an air source; the gas supply pipeline (20) is connected with the gas source supply assembly (10) and is connected with an original gas supply device for supplying gas to the inflatable sealing ring (1); the pressure regulating assembly (60) is arranged on the gas supply pipeline (20) and used for regulating the gas pressure output by the gas supply pipeline (20); a safety valve (90) disposed on the gas supply duct (20); a one-way valve (80) disposed on the gas supply duct (20).

2. The emergency inflation device according to claim 1, wherein the air supply assembly (10) comprises a plurality of air compressors (11) arranged independently of each other and in backup to each other.

3. The emergency inflation device according to claim 2, wherein the gas supply duct (20) comprises a main duct section (21), and a plurality of branch duct sections (22) provided on the main duct section (21) and communicating with the main duct section (21);

each branch pipe section (22) is correspondingly connected with each air compressor (11);

the check valve (80) and the safety valve (90) are arranged in sequence along the gas output direction.

4. An emergency inflation device according to claim 3, wherein a supply valve (30) is provided in each of the branch pipe sections (22).

5. An emergency inflation device according to claim 3, wherein a first pressure gauge (40) is provided on each of the branch tube sections (22).

6. An emergency inflation device according to claim 3, wherein a second pressure gauge (70) is provided on the main tube section (21).

7. An emergency inflation device according to claim 3, wherein a filter (50) is provided on the main tube section (21).

8. An emergency inflation device according to claim 3, wherein the pressure regulating assembly (60) comprises a pressure reducing valve provided on the main pipe section (21).

9. An emergency inflation device according to claim 3, wherein the end of the main pipe section (21) remote from the branch pipe section (22) is connected to a pressure relief opening of the original gas supply device.

10. Emergency inflation device according to claim 3, characterized in that the number of air compressors (11) is two,

the number of the branch pipe sections (22) is two, and the two branch pipe sections (22) are respectively positioned at one end of the main pipe section (21).

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