CN216277155U

CN216277155U - Flexible negative pressure isolation room for emergency maintenance of valves of live-toxicity wastewater pipelines

Info

Publication number: CN216277155U
Application number: CN202121911145.9U
Authority: CN
Inventors: 张亦静; 严向炜
Original assignee: China IPPR International Engineering Co Ltd
Current assignee: China IPPR International Engineering Co Ltd
Priority date: 2021-08-16
Filing date: 2021-08-16
Publication date: 2022-04-12
Anticipated expiration: 2031-08-16

Abstract

The utility model provides a flexible negative pressure isolation chamber for emergency maintenance of a live-poison wastewater pipeline valve, which comprises: the buffer room is communicated with an external environment through a first sealed zipper door and is communicated with the maintenance room through a second sealed zipper door; the maintenance room further comprises pipeline biological safety sealers and a third sealing zipper, the pipeline biological safety sealers are arranged on two sides of the maintenance room, two ends of the third sealing zipper are respectively connected with the pipeline biological safety sealers on two sides, when the third sealing zipper is opened, a pipeline can penetrate through the pipeline biological safety sealers on two sides and then is closed, and the third sealing zipper can enable the pipeline containing the valve to be contained in the maintenance room in a sealing mode.

Description

Flexible negative pressure isolation room for emergency maintenance of valves of live-toxicity wastewater pipelines

Technical Field

The utility model relates to the technical field of biological safety, in particular to a flexible negative pressure isolation chamber for emergency maintenance of a live-poison wastewater pipeline valve.

Background

Valves in live wastewater pipes in high-level biosafety laboratories or in shelters in locations for the treatment and diagnosis of virulent infectious diseases are easily damaged parts of the overall pipe system, and therefore need to be periodically overhauled or replaced. However, such drainage pipeline systems contain highly pathogenic biological agents, such as viruses and bacteria, even virulent infectious disease viruses, and therefore, in order to prevent the harmful agents from overflowing during the maintenance or replacement of the valves, the operations must be performed in a closed environment to meet the requirements of biological safety. Therefore, special equipment and methods are needed to service and replace the pipeline valves. However, no effective solution is currently available.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problems in the prior art, the utility model provides a flexible negative pressure isolation chamber for emergency maintenance of a live-poison wastewater pipeline valve, which can realize online and sealed maintenance.

According to one aspect of the utility model, a flexible negative pressure isolation chamber for emergency maintenance of a valve of a live-poison waste water pipeline is provided, which is characterized by comprising: a buffer room (10), a maintenance room (20), a buffer room air supply device (30), a buffer room air exhaust device (40), a maintenance room air supply device (50) and a maintenance room air exhaust device (60),

the buffer room (10) and the maintenance room (20) are sealed spaces and are communicated with the external environment through a first sealed zipper door (11) and communicated with the maintenance room (20) through a second sealed zipper door (12);

the buffer room air supply device (30) and the buffer room exhaust device (40) are arranged on the buffer room (10), the buffer room air supply device and the buffer room exhaust device (40) jointly act to keep the interior of the buffer room (10) at negative pressure, and a high-efficiency filter is arranged on the buffer room exhaust device (40);

the maintenance room air supply device (50) and the maintenance room exhaust device (60) are provided with a maintenance room (20), the maintenance room air supply device and the maintenance room exhaust device (60) jointly act to keep the interior of the maintenance room (20) at negative pressure, and the maintenance room exhaust device (60) is provided with a high-efficiency filter;

the maintenance room (20) further comprises a pipeline biological safety sealer (21) and a third sealing zipper (22), the pipeline biological safety sealer (21) is arranged on two sides of the maintenance room (20), two ends of the third sealing zipper (22) are respectively connected with the pipeline biological safety sealers (21) on two sides, when the third sealing zipper (22) is opened, a pipeline can penetrate through the pipeline biological safety sealers (21) on two sides, then the third sealing zipper (22) is closed, and the pipeline containing a valve can be contained in the maintenance room (20) in a sealing mode.

According to an embodiment of the utility model, the negative pressure in the buffer compartment (10) is higher than the negative pressure in the service compartment (20).

According to the embodiment of the utility model, the filtration efficiency of the high-efficiency filters on the buffer room exhaust device (40) and the maintenance room exhaust device (60) is not less than 99.99% @0.3 mu m.

According to the embodiment of the utility model, the buffer room air supply device (30) and the maintenance room air supply device (50) are provided with high-efficiency filters.

According to the embodiment of the utility model, the flexible negative pressure isolation room for emergency maintenance of the valve of the live-toxicity waste water pipeline further comprises a buffer room (10) and a disinfection device in the maintenance room (20).

According to the embodiment of the utility model, the flexible negative pressure isolation room for the emergency maintenance of the valve of the live-poison waste water pipeline further comprises a calling device arranged in the buffer room (10).

The flexible negative pressure valve emergency maintenance isolation chamber has a simple structure, can reduce investment, is flexible to apply, can be designed and processed nonstandard according to actual conditions, can be rapidly unfolded, maintained and replaced on site, improves the rapid response capability of emergency maintenance, and protects driving for normal work of core experiments and the like.

Drawings

Some specific embodiments of the utility model will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. The objects and features of the present invention will become more apparent in view of the following description taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic perspective view of a flexible negative pressure isolation chamber for emergency maintenance of a live-poison wastewater pipeline valve according to an embodiment of the present invention; and

fig. 2 is a schematic plane structure diagram of a flexible negative pressure isolation chamber for emergency maintenance of a live sewage pipeline valve according to an embodiment of the utility model.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings, but the present invention is not limited thereto.

FIG. 1 is a schematic perspective view of a flexible negative pressure isolation chamber for emergency maintenance of a live-poison wastewater pipeline valve according to an embodiment of the present invention; fig. 2 is a schematic plane structure diagram of a flexible negative pressure isolation chamber for emergency maintenance of a live sewage pipeline valve according to an embodiment of the utility model. Referring to fig. 1 and 2, the flexible negative pressure isolation booth for emergency maintenance of a live-poison wastewater pipeline valve according to an embodiment of the present invention may include a buffering booth (10), a maintenance booth (20), a buffering booth air supply device (30), a buffering booth air exhaust device (40), a maintenance booth air supply device (50), and a maintenance booth air exhaust device (60), and in addition, a sterilization device (not shown) such as ultraviolet sterilization, sterilization of an external or internal hydrogen peroxide sterilizer, sterilization of an internal space as a whole, sterilization of an exhaust high efficiency filter, and the like may be further provided in the buffering booth (10) and the maintenance booth (20).

The buffer room (10) and the maintenance room (20) are sealed spaces, and are communicated with the buffer room (10) through the first sealed zipper door (11) and an external environment, and are communicated with the maintenance room (20) through the second sealed zipper door (12). More specifically, the buffer compartment (10) and the service compartment (20) may include a support skeleton, such as lightweight 316L stainless steel struts, and a peripheral skin, such as may be made of a transparent elastomeric polyurethane material and high frequency welded. The maintenance room (20) also comprises pipeline biological safety sealers (21), wherein the pipeline biological safety sealers (21) are arranged on two sides of the maintenance room (20) and are used for sealing the pipeline passing through the maintenance room (20); such a pipeline bio-safety seal (21) has been widely used in laboratories such as P3, P4, and is well known to those skilled in the art and will not be described herein. The maintenance room (20) also comprises a third sealing zipper (22), and two ends of the third sealing zipper (22) are respectively connected with the pipeline biological safety sealers (21) at two sides. In use, when the third sealing zipper (22) is opened, the maintenance room (20) can be separated (from the bottom in the figure), the pipeline biological safety sealer (21) at two sides is exposed, then the pipeline biological safety sealer (21) is clamped on the pipeline, and after sealing, the third sealing zipper (22) is closed, so that the pipeline containing the valve is hermetically accommodated in the maintenance room (20).

Referring to the attached drawings, a buffer room air supply device (30) and a buffer room exhaust device (40) are arranged on the buffer room (10), the buffer room air supply device and the buffer room exhaust device work together to keep the interior of the buffer room (10) at negative pressure, such as-10 pa, and a high-efficiency filter is arranged on the buffer room exhaust device (40); the maintenance room air supply device (50) and the maintenance room air exhaust device (60) are arranged on the maintenance room (20), and the maintenance room air supply device and the maintenance room air exhaust device (60) jointly act to keep the negative pressure in the maintenance room (20), for example, 30pa. is kept, and high-efficiency filters can be arranged on the buffer room air supply device (30), the buffer room air exhaust device (40), the maintenance room air supply device (50) and the maintenance room air exhaust device (60); the filtration efficiency of the high-efficiency filter is not less than 99.99% @0.3 mu m

More specifically, the negative pressure value of the flexible negative pressure operation room can be not lower than 30Pa, and the pressure can be automatically adjusted. The number of air exchange times in the isolation interval is 10-15 times/hour, and the noise is less than or equal to 50dB (A). The pipeline biological sealer is arranged at the joint of the pipeline and the flexible negative pressure valve emergency maintenance isolation room, so that the pipeline and the maintenance room can be conveniently connected, and the requirement of biological safety sealing can be met. The exhaust air is subjected to secondary efficient filtration, the indoor negative pressure can be continuously maintained, the negative pressure can be automatically controlled and regulated, H14-grade HEPA filters can be installed for both air supply and exhaust, and the filtration efficiency of the exhaust air efficient filter is more than or equal to 99.99% @0.3 mu m; the internal and external negative pressure difference is more than or equal to 15Pa, the biological safety is good, the personal safety of workers is ensured, and the pollution to the experimental place and the surrounding environment is effectively avoided. The air tightness of the flexible negative pressure valve emergency maintenance isolation chamber can meet the air tightness requirement of the isolator in the standard RB/T199 and 2015 technical Specification for evaluating the biological safety performance of laboratory equipment. The field assembly time of the device of the present invention may be about 1 hour with an emergency call system built in. The effective use area of the interior can be determined according to the overhaul quantity of the pipeline valves.

The operation process of the device comprises the following steps:

1. before the valve of the live-poison wastewater pipeline is replaced, the drainage in the pipeline is emptied. And a negative pressure valve maintenance room and a buffer room are assembled, and the live-poison wastewater pipeline passing through the maintenance room is ensured to be connected in a sealing way by adopting a pipeline biological sealer.

2. And opening the air supply and exhaust filter of the isolation room to enable the negative pressure value of the flexible negative pressure operation room to be not lower than 30Pa (adjustable).

3. The maintenance personnel wear the protective clothing and carry the valve and the tool to be replaced into the isolation room.

4. And the maintenance personnel replace the valve and disinfect the outside of the protective clothing before the valve is taken out of the buffer room after the valve is replaced.

Although the present invention has been described above with reference to the accompanying drawings, the present invention is not limited to the above embodiments, and those skilled in the art can make various changes or modifications without departing from the spirit of the present invention.

Claims

1. A flexible negative pressure isolation compartment for the emergency maintenance of a live-poison wastewater pipeline valve, comprising: a buffer room (10), a maintenance room (20), a buffer room air supply device (30), a buffer room air exhaust device (40), a maintenance room air supply device (50) and a maintenance room air exhaust device (60),

wherein, the buffer room (10) and the maintenance room (20) are sealed spaces, the buffer room (10) is communicated with the external environment through a first sealed zipper door (11) and is communicated with the maintenance room (20) through a second sealed zipper door (12);

2. The flexible negative pressure isolation compartment for emergency maintenance of valves in live sewage pipelines according to claim 1, characterized in that the negative pressure in the buffer compartment (10) is higher than the negative pressure in the maintenance compartment (20).

3. The flexible negative pressure isolation booth for emergency maintenance of live-poison wastewater pipeline valves according to claim 1, wherein the filtration efficiency of the high efficiency filters on the buffer booth exhaust apparatus (40) and the booth exhaust apparatus (60) is not less than 99.99% @0.3 μm.

4. The flexible negative pressure isolation chamber for emergency maintenance of a live-poison wastewater pipeline valve according to claim 1, characterized in that high-efficiency filters are installed on the buffer chamber air supply device (30) and the maintenance chamber air supply device (50).

5. The flexible negative pressure isolation booth for emergency maintenance of valves in live sewage pipelines according to claim 1, further comprising a buffer booth (10) and a disinfection device in the maintenance booth (20).

6. The flexible vacuum isolation booth for emergency maintenance of valves in live sewage pipelines according to claim 1, further comprising a call device disposed in the buffer booth (10).