JPH02188682A - Device for controlling operation of pump of cooling water feeding device - Google Patents

Abstract

PURPOSE:To improve the reliability by starting both of each pair of two pumps at the time of operating a system of heat loads and switching over to a pump on standby at the time of abnormality of an ordinally operating pump. CONSTITUTION:At the time of starting a system, a pump P00 is started and judged whether in a normal condition or not. The pump is judged normal when the flow rate switch SW on a circulating passage is operated. At the time of a normal condition, a pump P01 on standby is started whereas, at the time of abnormal condition, the pump P01 is started after carrying out the indication of abnormality. Then, it is judged whether the pump P01 is normal or not and, when judged abnormal, the pump P01 is stopped. When judged normal, a pump P10 is started and the procedure of the same program as above is followed on a pair of pumps P10 and P11 and, after finishing procedures up to pumps P50 and P51, fans F0-F5 are started. Thereby, both of each pair of pumps can be checked without fail.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention is a method for exchanging heat with a cooling medium such as cooling water for a heat load that requires high reliability, such as a computer as a load to be cooled. The present invention relates to a pump operation control device for a cooling water supply device that supplies water through a cooling water container.

[Prior Art] Conventionally, as a pump operation control device for this type of cooling water supply system, a pump that is on standby redundancy is activated only when the other activated pump becomes abnormal or only at certain intervals. It was like that.

[Problem to be solved by the invention] However, in conventional equipment, if the pump that is on standby becomes abnormal, the pump that is running is quickly switched over, and the entire system such as the computer must continue to operate. It won't happen. However, when starting up the system, the redundant pumps on standby were not started unless there was a particular problem.

However, in the past, it was possible to forcibly start the standby redundant pump at regular intervals to check for normal operation.

However, even though it is called alternating operation at regular intervals, frequent alternating/Z-operation is not possible due to the number of starts and stops, so Shintsu has been doing alternating operation every month or so.

A problem with standby redundant pumps like this one is that there are few opportunities to start them up to check whether they are operating normally.

The present invention eliminates the above-mentioned problems, and when the system is operated, for example, when a computer that has been stopped at night is turned on and put into operation, the normal operation of the standby redundant pump is checked. An object of the present invention is to provide a pump operation control device for a water supply device.

[Means for Solving the Problems] The present invention includes a circulation path for circulating and supplying cooling water to a heat load;
In order to supply cooling water through this circulation path, a plurality of pumps consisting of a pair of constantly operating pumps and a standby redundant pump,
A cooling water supply device comprising: a heat exchanger for exchanging heat taken by cooling water from the heat load; a cooling water abnormality detection device for detecting an abnormality in the cooling water supplied to the heat load; The pump is provided with a control means for starting the always-operating pump and the standby redundant pump when operating the system as a load.

[Operation] According to the present invention, when the system is started now, the pump P00 is started first, and then it is determined whether the pump POO is normal or not. This determination is determined to be normal if the flow rate switch attached to each circulation path operates. If it is normal, the standby redundant pump POI is started, and if it is not normal, the low standby redundant pump P01 that displayed the abnormality display is started. Next, it is determined whether the standby redundant pump Pot is normal or not, and if it is not normal, the pump PO1 is stopped. If normal, pump PIO is started next. For the pair of pump PIO and pump P11, perform the program described in and again, and then
, P21, P2O, P31, P2O.

P41, P2O, and P51 each form a pair of cooling water circulation pumps P provided in the circulation paths L2 to L6.
20 and P21, P2O and P31, P2O and P41, P2
The same program as above is performed for O and P51, and after completion, fans FO to F5 are started.

When operating the system in this way, be sure to start both of the two pumps in each pair and check whether both pumps are normal. [Example] Figure 1 shows a piping system showing an example of this invention. FIG. Fig. 2 is a block diagram of the control system for Fig. 1. In Fig. 1, 10 to 15 are heat loads such as computers that require a high degree of reliability, and L1 to L6 are each heat load lO 20 to 25 are heat exchangers, POO and POI are two pairs of pumps for circulating cooling water installed in the circulation path Ll, and PIO , pH, P2O, P21, P2O, P
31, P2O, P41, and P2O.

P51 is a pair of cooling water circulation pumps that are installed in the circulation paths L2 to L6, and one of the pumps in this pair is always operated, and the other is on standby as a redundant pump. It is in.

FO to F5 are fans for air cooling the heat exchangers 20 to 25, and SWI to SW5 are flow switches provided in each circulation path for abnormality detection. And 30 is a tank.

In FIG. 2, 31 are pumps POO and POI.

PIO, pH, P2O, P21. P2O, P31, P2
O, P41, P2O and P51, and fans FO to F5
This is a control unit that controls the

The operation of the apparatus shown in FIGS. 1 and 2 will be explained below with reference to the flowchart shown in FIG.

In this configuration, when the system starts up,
First, in step 1, the pump P00 is started, and in step 2, it is determined whether the pump P00 is normal. This determination is determined to be normal if the flow rate switch attached to each circulation path operates. If it is normal, the standby redundant pump P01 is started in step 3, and if it is not normal, an abnormality is displayed in step 4, and then the standby redundant pump POI is started in step 3. Next, in step 5, it is determined whether the standby redundant pump POI is normal or not, and if it is not normal, the pump POI is stopped in step 6.

If normal, start pump P10 in step 11, and perform step 1 of the same program as steps 1 to 6 above for the pair of pump PIO and pump pH.
1 to step 16, and then the cooling water circulation pumps P20 and P21, P2O and P31, and P2O and P41, which are provided in pairs in the circulation paths L2 to L6, respectively.
, ・Steps 21 to 2 of the same program as steps 1 to 6 above for P2O and P51
6, step 31 to step 36, and step 41
After performing step 46 and finishing -r, the fans FO~F
5.

By doing this, when operating the system, both of the two pumps in each pair can be started without fail to check whether they are normal.

[Effects of the Invention] According to the present invention, when operating a system that is a heat load, both of the two pumps in each pair are always started and a check is made to see if both pumps are normal, thereby reducing constant operation. When a pump becomes abnormal, it can be confirmed in advance whether or not a standby redundant pump will reliably be used, making it possible to configure a more reliable system.

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram of a piping system showing an embodiment of this invention;
This figure is a block diagram of the control system for FIG. 1, and FIG. 3 is a flowchart showing the program of the present invention. 10-15...Heat load, 20-25...Heat exchanger,
31...Control unit, POO, Pot, PIO, pH. P2O, P21. P2O, P31. P2O, P41, P
2O, P51...Cooling water circulation pump, SWI~SW
5... Sunny switch, L1-L6... Circulation I: n O
RiofF2 2nd cause

Claims (1)

[Claims] 1) A circulation path that circulates and supplies cooling water to the heat load, a plurality of pumps consisting of a pair of constantly operating pumps and a standby redundant pump to supply cooling water through this circulation path, and a plurality of pumps that supply the cooling water to the heat load. A cooling water supply device comprising a heat exchanger for exchanging heat taken from the heat load, a cooling water abnormality detection device for detecting an abnormality in the cooling water supplied to the heat load, and a system operating the heat load. 1. A pump operation control device for a cooling water supply device, comprising: control means for starting the constantly operating pump and the standby redundant pump.