Reliable and efficient power supply system and method

Abstract

The invention belongs to the technical field of instrument electric control, and particularly relates to a reliable and efficient power supply system and method. Comprising a first power supply, a second power supply, a first main switch, a second main switch, a first branch power supply, a second branch power supply, a first branch switch, a second branch switch, a third branch switch, a fourth branch switch, a first fluid measuring device and a second fluid measuring device. The first power supply is connected with the first branch power supply through a cable, a first main switch is arranged on the cable, the first branch power supply is respectively connected with the first fluid measuring device and the second fluid measuring device through cables, and a first branch switch and a second branch switch are respectively arranged on the cable. The system has the advantages that the number of upstream high-value power supplies is reduced, low-value distribution boxes are added, and the equipment cost of the power supply system is integrally reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of instrument electronic control, and in particular relates to a reliable and efficient power supply system and method. Background Art

[0002] Fluid measuring devices are widely used in fluid pipelines in the petrochemical and power industries. For important fluid parameters, two sets of fluid measuring devices are generally set up. In order to improve the reliability of the fluid measuring devices, two power supplies need to be provided to the two sets of fluid measuring devices respectively.

[0003] The current solutions to the above problems are:

[0004] Four power supplies are taken from the upstream and sent to two sets of fluid measuring devices, each of which has two power supplies. This solution requires four power supplies from the upstream, which occupies a large amount of power supply, and requires the laying of four power supply cables. The material cost and engineering construction cost are high, which is particularly prominent for long-distance cable laying. Summary of the invention

[0005] The purpose of the present invention is to provide a reliable and efficient power supply system and method, which can not only ensure the power supply reliability of the fluid measuring device, but also reduce the number of upstream power supplies, reduce equipment, material costs and cable laying costs.

[0006] The technical solution of the present invention is as follows: a reliable and efficient power supply system, comprising a first power supply, a second power supply, a first main switch, a second main switch, a first branch power supply, a second branch power supply, a first branch switch, a second branch switch, a third branch switch, a fourth branch switch, a first fluid measuring device and a second fluid measuring device.

[0007] The first power supply is connected to the first branch power supply by a cable, on which a first main switch is mounted. The first branch power supply is respectively connected to the first fluid measuring device and the second fluid measuring device by cables, on which a first branch switch and a second branch switch are mounted.

[0008] The second power supply is connected to the second branch power supply by a cable, on which a second main switch is mounted. The second branch power supply is connected to the first fluid measuring device and the second fluid measuring device by cables, on which a third branch switch and a fourth branch switch are mounted.

[0009] The first main switch, the second main switch, the first branch power supply, the second branch power supply, the first branch switch, the second branch switch, the third branch switch and the fourth branch switch are installed in the distribution box.

[0010] A reliable and efficient power supply method, comprising:

[0011] The first power supply is used as the main power supply, and the second power supply is used as the backup power supply;

[0012] The second power supply is used as the main power supply, and the first power supply is used as the backup power supply.

[0013] The first power supply is used as the main power supply, and the second power supply is used as the backup power supply, comprising the following steps:

[0014] Step 11: Disconnect the second main switch, the third branch switch, and the fourth branch switch;

[0015] Step 12: The first main switch, the first sub-switch, and the second sub-switch are closed, and the first fluid measuring device and the second fluid measuring device are powered by the first power supply;

[0016] Step 13: When the first power supply loses power, the first main switch is disconnected, the second main switch is closed, and the third sub-switch and the fourth sub-switch are opened. The first fluid measuring device and the second fluid measuring device are powered by the second power supply 2.

[0017] The second power source is used as the main power source, and the first power source is used as the backup power source, including the following steps:

[0018] Step 21: Disconnect the first main switch, the first sub-switch, and the second sub-switch;

[0019] Step 22: Close the second main switch, the third sub-switch, and the fourth sub-switch, and the first fluid measuring device and the second fluid measuring device are powered by the second power supply;

[0020] Step 23: When the second power supply loses power, the second main switch is disconnected, and the first main switch, the first sub-switch, and the second sub-switch are closed, and the first fluid measuring device and the second fluid measuring device are powered by the second power supply.

[0021] The beneficial effects of the present invention are:

[0022] (1) The number of upstream high-value power supplies is reduced, and low-value distribution boxes are added, which reduces the overall cost of power supply system equipment;

[0023] (2) Due to the reduction of upstream power supply, operation and maintenance costs are reduced accordingly;

[0024] (3) Reduce the line laying length and save line material costs;

[0025] (4) Reduce the construction costs caused by line laying, which is particularly prominent when supplying power over long distances;

[0026] (5) The reliability of power supply will not be reduced due to the reduction of upstream power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of a reliable and efficient power supply system provided by the present invention.

[0028] In the figure, 1 is the first power supply, 2 is the second power supply, 3 is the first main switch, 4 is the second main switch, 5 is the first sub-power supply, 6 is the second sub-power supply, 7 is the first sub-switch, 8 is the second sub-switch, 9 is the third sub-switch, 10 is the fourth sub-switch, 11 is the first fluid measuring device, 12 is the second fluid measuring device, and 13 is the distribution box. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] The present invention provides a reliable and efficient power supply system and method that uses a distribution box for power supply. The distribution box receives two power supplies from upstream, divides the power supplies into four in the distribution box, and distributes them to two sets of fluid measuring devices. This solution reduces two sets of upstream power supplies, reduces equipment and material costs, and reduces cable laying costs.

[0031] The specific plan is:

[0032] Two main lines are set in the distribution box, each main line is equipped with a main switch, there are two branch lines downstream of the main switch, each of the two branch lines has a branch switch, and the two branch lines are respectively connected to two sets of fluid measuring devices.

[0033] Take two power supplies from the upstream of the distribution box and connect them to the main lines in the distribution box respectively. When one main line loses power, switch to the other main line to ensure reliable power supply for the two fluid measuring devices.

[0034] like Figure 1 As shown, a reliable and efficient power supply system includes: a first power supply 1, a second power supply 2, a first main switch 3, a second main switch 4, a first branch power supply 5, a second branch power supply 6, a first branch switch 7, a second branch switch 8, a third branch switch 9, a fourth branch switch 10, a first fluid measuring device 11, a second fluid measuring device 12 and a distribution box 13.

[0035] The first power supply 1 is connected to the first branch power supply 5 by a cable, on which a first main switch 3 is mounted. The first branch power supply 5 is respectively connected to the first fluid measuring device 11 and the second fluid measuring device 12 by cables, on which a first branch switch 7 and a second branch switch 8 are respectively mounted.

[0036] The second power supply 2 is connected to the second branch power supply 6 by a cable, on which a second main switch 4 is mounted. The second branch power supply 6 is respectively connected to the first fluid measuring device 11 and the second fluid measuring device 12 by cables, on which a third branch switch 9 and a fourth branch switch 10 are respectively mounted.

[0037] The first main switch 3 , the second main switch 4 , the first branch power supply 5 , the second branch power supply 6 , the first branch switch 7 , the second branch switch 8 , the third branch switch 9 and the fourth branch switch 10 are installed in the distribution box 13 .

[0038] A reliable and efficient power supply method comprises the following steps:

[0039] The first power supply 1 is used as the main power supply, and the second power supply 2 is used as the backup power supply:

[0040] Step 11: Disconnect the second main switch 4, the third sub-switch 9, and the fourth sub-switch 10;

[0041] Step 12: close the first main switch 3, the first sub-switch 7, and the second sub-switch 8, and the first fluid measuring device 11 and the second fluid measuring device 12 are powered by the first power supply 1;

[0042] Step 13: When the first power supply 1 loses power, the first main switch 3 is disconnected, the second main switch 4 is closed, the third sub-switch 9 and the fourth sub-switch 10 are opened, and the first fluid measuring device 11 and the second fluid measuring device 12 are powered by the second power supply 2.

[0043] The second power supply 2 is used as the main power supply, and the first power supply 1 is used as the backup power supply:

[0044] Step 21: Disconnect the first main switch 3, the first sub-switch 7, and the second sub-switch 8;

[0045] Step 22: close the second main switch 4, the third sub-switch 9, and the fourth sub-switch 10, and the first fluid measuring device 11 and the second fluid measuring device 12 are powered by the second power supply 2;

[0046] Step 23: When the second power supply 2 loses power, the second main switch 4 is disconnected, and the first main switch 3 , the first sub-switch 7 , and the second sub-switch 8 are closed. The first fluid measuring device 11 and the second fluid measuring device 12 are powered by the second power supply 2 .

Claims

1. A reliable and efficient power supply system, characterized by: It includes a first power supply, a second power supply, a first main switch, a second main switch, a first sub-power supply, a second sub-power supply, a first sub-switch, a second sub-switch, a third sub-switch, a fourth sub-switch, a first fluid measuring device and a second fluid measuring device.

2. A reliable and efficient power supply system as claimed in claim 1, characterized in that: The first power supply is connected to the first branch power supply by a cable, on which a first main switch is mounted. The first branch power supply is connected to the first fluid measuring device and the second fluid measuring device by cables, on which a first branch switch and a second branch switch are mounted.

3. A reliable and efficient power supply system as claimed in claim 1, characterized in that: The second power supply is connected to the second branch power supply by a cable, on which a second main switch is mounted. The second branch power supply is connected to the first fluid measuring device and the second fluid measuring device by cables, on which a third branch switch and a fourth branch switch are mounted.

4. A reliable and efficient power supply system as claimed in claim 1, characterized in that: The first main switch, the second main switch, the first branch power supply, the second branch power supply, the first branch switch, the second branch switch, the third branch switch and the fourth branch switch are installed in the distribution box.

5. A reliable and efficient power supply method, characterized in that: These include: The first power supply is used as the main power supply, and the second power supply is used as the backup power supply; The second power supply is used as the main power supply, and the first power supply is used as the backup power supply.

6. A reliable and efficient power supply method as claimed in claim 5, characterized in that: The first power supply is used as the main power supply, and the second power supply is used as the backup power supply, comprising the following steps: Step 11: Disconnect the second main switch, the third sub-switch, and the fourth sub-switch; Step 12: The first main switch, the first sub-switch, and the second sub-switch are closed, and the first fluid measuring device and the second fluid measuring device are powered by the first power supply; Step 13: When the first power supply loses power, the first main switch is disconnected, the second main switch is closed, and the third sub-switch and the fourth sub-switch are opened. The first fluid measuring device and the second fluid measuring device are powered by the second power supply 2.

7. A reliable and efficient power supply method as claimed in claim 5, characterized in that: The second power source is used as the main power source, and the first power source is used as the backup power source, including the following steps: Step 21: Disconnect the first main switch, the first sub-switch, and the second sub-switch; Step 22: The second main switch, the third sub-switch, and the fourth sub-switch are closed, and the first fluid measuring device and the second fluid measuring device are powered by the second power supply; Step 23: When the second power supply loses power, the second main switch is disconnected, and the first main switch, the first sub-switch, and the second sub-switch are closed, and the first fluid measuring device and the second fluid measuring device are powered by the second power supply.

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