CN200965635Y

CN200965635Y - Nuclear power station computer monitor system double loop network

Info

Publication number: CN200965635Y
Application number: CNU2006200465847U
Authority: CN
Inventors: 石朝珠; 周欣; 徐华; 张海兵; 曾天翔; 刘海波; 包云华
Original assignee: SHANGHAI HAIDE CONTROL SYSTEM CO Ltd
Current assignee: SHANGHAI HAIDE CONTROL SYSTEM CO Ltd
Priority date: 2006-09-29
Filing date: 2006-09-29
Publication date: 2007-10-24
Anticipated expiration: 2016-09-29

Abstract

The utility model relates to a double loop network used in the computer motoring system of nuclear power station, comprising two independent loop-shaped networks with at least two switches each and each loop-shaped network is connected between the devices of a motoring computer and a nuclear power station. Applying the structure of the double loop network in which one switch of the loop-shaped network is connected with another switch in the other network, the reliability of communication of the unblocked network is improved a lot as two standard loop-shaped networks are mutually connected even if three arbitrary physical breakpoints exist in the network and the high requirements of equipment motoring system of nuclear power station is met. The double loop network of the utility model also has the advantages of greatly reducing the investment cost of the network system with simple structure and convenient use and maintenance, and establishing a substantial foundation for the development of the safety and technology of the nuclear power station with a wide scope of application that can be easily popularized and applied.

Description

Double loop network in the nuclear power station computer supervisory control system

Technical field

The utility model relates to the nuclear plant safety technical field, and particularly nuclear power plant equipment computer supervisory control system field specifically is meant the double loop network in a kind of nuclear power station computer supervisory control system.

Background technology

Along with development of modern science and technology, more and more countries is brought into use nuclear energy power generation, nuclear power station arises at the historic moment, and as in the nuclear power station the most core be exactly various operational outfits, the duty of itself is very crucial, not only be related to the normal operation of nuclear power station, and be related to great personal safety and Environmental security problem, therefore the various device for nuclear power station all has very tight surveillance usually.

But, in the prior art, all realized the computer network monitoring for the various device in the nuclear power station, still relatively more commonly used at present all is single loop network, and in the Single-ring network of standard, allows 1 network breakpoint in theory at most; Use two Single-ring networks, allow 2 network breakpoints in theory at most; And for various reasons, tend to occur situation in the reality more than 2 network breakpoints, and adopt the Single-ring network more than three to connect the investment that can increase system, tend to lead to great accident like this, all brought very grave disaster for the mankind and environment, therefore, how can carry out the monitoring of stability and safety, become the pendulum problem that want in very tight joint in face of the mankind for the duty of the equipment of nuclear power station.

The utility model content

The purpose of this utility model is to have overcome above-mentioned shortcoming of the prior art, provide a kind of have high reliability and redundancy, simple in structure, working service convenient, system's cost of investment is lower, the scope of application double loop network in the nuclear power station computer supervisory control system comparatively widely.

In order to realize above-mentioned purpose, the double loop network in the nuclear power station computer supervisory control system of the present utility model has following formation:

Double loop network in this nuclear power station computer supervisory control system, comprise two independently loop networks, include at least two switches in each loop network, and each loop network all is connected between supervisory control comuter and the nuclear power plant equipment, its principal feature is, switch in described one of them loop network is connected with a switch in another loop network.

Described loop network is the fiber annular network.

Described loop network all is connected in described supervisory control comuter and nuclear power plant equipment by switch.

A switch in the described loop network can be connected with a switch in another loop network by optical fiber or cable.

Adopted the double loop network in the nuclear power station computer supervisory control system of this utility model, owing between the loop network of two standards, be connected to each other, make this double loop network can allow 3 network breakpoints at most in theory, improved the reliability of network communication greatly, can adapt to this very high occasion of nuclear power plant equipment monitoring reliability requirement; Double loop network of the present utility model is simple in structure simultaneously, and working service is convenient, greatly reduces the cost of investment of network system, and the scope of application is comparatively extensive, is very easy to apply, for good basis has been established in the development of nuclear plant safety technology.

Description of drawings

Fig. 1 is the double loop network configuration diagram in the nuclear power station computer supervisory control system of the present utility model.

Embodiment

In order more to be expressly understood technology contents of the present utility model, describe in detail especially exemplified by following examples.

See also shown in Figure 1, double loop network in this nuclear power station computer supervisory control system, comprise two independently loop networks, described loop network is the fiber annular network, also can according to circumstances adopt other loop network, include at least two switches in each loop network, in the present embodiment, each loop network all has four switches, be that first loop network has A, B, C, four switches of D, second loop network has E, F, G, four switches of H, and each loop network all is connected between supervisory control comuter 1 and the nuclear power plant equipment 2, in the present embodiment, first loop network is connected in described supervisory control comuter 1 by switch C, be connected in described nuclear power plant equipment 2 by switch A, second loop network is connected in described supervisory control comuter 1 by switch H, be connected in described nuclear power plant equipment 2 by switch F, simultaneously, a switch D in described one of them loop network is connected with a switch E in another loop network by optical fiber or cable, can certainly according to circumstances adopt other connected mode.

In the middle of actual motion used, two independent looped networks were made of switch A, B, C, D and E, F, G, H respectively, again the double loop network that has been connected to form by D, E.The task of double loop network is to make between nuclear power plant equipment 2 and the supervisory control comuter 1 to form data path, and the physics breakpoint that holds as much as possible.As can see from Figure 1, the one road no problem as long as the line between switch A, B, C or F, G, the H has, so clearly just can between equipment and computing machine, form data path.Suppose respectively to have occurred a breakpoint on this two-way, make this two-way can not use simultaneously; So still, can form data path by " * " type network that A, C, D, E, F, H constituted, and in this " * " type network, on any section, the 3rd breakpoint occur and can not influence data path.For example: data can be passed through F, E if breakpoint appears in A, D, H transmits; Data can be passed through A, D if breakpoint appears in F, E, C transmits.

If but this moment, breakpoint appearred in A, D and F, E simultaneously, thereby made that total breakpoint number is 4, then data can not constitute path, and therefore, double loop network can have 3 breakpoints in theory and not influence data communication, thereby has reached higher reliability.

Adopted the double loop network in the above-mentioned nuclear power station computer supervisory control system, owing between the loop network of two standards, be connected to each other, make this double loop network can allow 3 network breakpoints at most in theory, improved the reliability of network communication greatly, can adapt to this very high occasion of nuclear power plant equipment monitoring reliability requirement; Double loop network of the present utility model is simple in structure simultaneously, and working service is convenient, greatly reduces the cost of investment of network system, and the scope of application is comparatively extensive, is very easy to apply, for good basis has been established in the development of nuclear plant safety technology.

In this instructions, the utility model is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from spirit and scope of the present utility model.Therefore, instructions and accompanying drawing are regarded in an illustrative, rather than a restrictive.

Claims

1, the double loop network in a kind of nuclear power station computer supervisory control system, comprise two independently loop networks, include at least two switches in each loop network, and each loop network all is connected between supervisory control comuter and the nuclear power plant equipment, it is characterized in that switch in described one of them loop network is connected with a switch in another loop network.

2, the double loop network in the nuclear power station computer supervisory control system according to claim 1 is characterized in that, described loop network is the fiber annular network.

3, the double loop network in the nuclear power station computer supervisory control system according to claim 1 and 2 is characterized in that described loop network all is connected in described supervisory control comuter and nuclear power plant equipment by switch.

4, the double loop network in the nuclear power station computer supervisory control system according to claim 1 and 2 is characterized in that, a switch in the described loop network is connected with a switch in another loop network by optical fiber or cable.