JPS5849495Y2 - Heat transfer liquid storage tank - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a storage tank that stores a heat transfer liquid that has been heat exchanged upstream and supplies it to a heat utilization facility for the heat transfer liquid downstream.

Effective use of heat such as waste heat by heating or cooling a heat medium liquid using heat recovered from prior art factory equipment, etc., and sending the heated or cooled heat medium to equipment that can use the heat. is being carried out.

In this case, in order to adjust the unbalance between the supply flow rate of the supplied heat medium liquid and the heat medium liquid processing flow rate in the heat utilization equipment, a heat medium liquid storage tank is conventionally provided between the heat exchange equipment and the heat utilization equipment. All the heat transfer liquid from the tank is temporarily stored in a storage tank and then supplied to the heat utilization equipment.

However, in the conventional equipment described above, by temporarily storing all the heated or cooled heat medium liquid in the storage tank, a large amount of heat tends to escape from the storage tank, which has a large heat radiation area.

If the storage tank is kept warm to prevent this, the equipment cost will be high.

Further, since the heat medium liquid immediately after heat exchange is mixed into the heat medium liquid in the storage tank whose temperature has changed due to heat radiation, the heat medium liquid cannot be effectively used at a high heating temperature or a low cooling temperature immediately after heat exchange.

Purpose of the invention The present invention was devised to solve the problems of the conventional device as described above, and its purpose is to:
To provide a heat medium liquid storage tank which can sufficiently reduce the heat radiation loss of heat exchanged heat medium liquid in the storage tank, and can easily maintain heat and reduce equipment costs.

Composition of the Invention In order to achieve the above-mentioned purpose, the present invention has a structure in which the heat exchanger liquid is stored in the upstream, and the heat exchanger is carried out in a storage tank that is sent to the heat utilization equipment of the heat exchanger liquid downstream. A receiving pipe for receiving the heat medium liquid is arranged in parallel with the storage tank body, and the bottom of the receiving pipe is connected to a suction pipe that communicates the storage tank body and the heat utilization equipment to form a heat medium liquid storage tank.

Example Embodiments of the present invention will be described below with reference to the drawings.

The water supply pipe 1 passes through the heat exchanger 3 and communicates with the receiving pipe 5 to supply water as shown by arrow B.

The heat exchanger 3 has a heating pipe 4 that receives heated water from exhaust heat recovery equipment such as an incinerator (not shown), and heats boiler water at a flow rate of Ql in the water supply pipe 1 to a temperature T1.

The receiving pipe 5 is provided close to the storage tank main body 7, the upper part 5a communicating with the water supply pipe 1 is shaped to expand upward, and the suction pipe 11 communicates the storage tank 7 and the pump 9 with the bottom part 5b. Connect to.

Further, the upper part of the receiving pipe 5 and the storage tank main body 7 are communicated through a ventilation pipe 13.

The upper part of the storage tank body 7 is covered with a lid 17 equipped with an air vent pipe 15.

An overflow pipe 19 is connected to the upper side wall of the storage tank body 7 to circulate overflow water.

Further, a replenishment water pipe 21 is communicated with the lid 17, and a liquid level control valve 22 is provided at the tip of the replenishment water pipe 21 to maintain a constant liquid level within the storage tank body 7.

The temperature of the boiler water in the storage tank body 7 is To.

Pump 9 is directed to heat utilization equipment such as a boiler (not shown) by arrow C.
As shown in , water at a temperature T2 is supplied at a flow rate of 02.

In the device of the present invention, the flow rate Q1 of water supplied from the water supply pipe 1
is equal to or greater than the flow rate Q2 delivered by the pump, that is, when Q1≧Q2, the heat exchanger 3
The flow rate Q2 of the water heated by the storage tank body 7
Excess water Q1Q2 is directly supplied from the pump 9 to the boiler without entering the tank body 7, and is stored in the storage tank body 7.

Therefore, the heat of the water heated to the temperature T1 by the heat exchanger 3 can be sent to the boiler with almost no loss, and the heat radiation loss can be extremely reduced.

Moreover, in this case, the receiving pipe 5 is kept warm, and the keeping of the storage tank body 7 can be omitted or made very simple, and the equipment cost can be reduced.

Next, compared to the flow rate Q1 of the water supply pipe 1, the pump supply flow rate Q2
When is large, that is, when Ql<Q2, all of the water from the water supply pipe 1 is supplied from the pump 9 to the boiler, and the water in the storage tank body 7 makes up for the shortage.

Therefore, in this case as well, by keeping the receiving pipe 5 warm, the heat radiation loss of water directly supplied from the water supply pipe 1 to the boiler via the pump 9 can be sufficiently reduced.

As the material of the receiving pipe 5, ordinary piping materials can be used.

Further, the inner diameter of the receiving pipe 5 is made larger than the inner diameter of the suction pipe 11 by one size, for example, a 150 φ receiving tube is used for a 100 φ suction pipe.

By doing so, the suction resistance from the receiving pipe 5 to the suction pipe 11 can be reduced and overflow in the receiving pipe 5 can be prevented.

The vent pipe 13 is for removing air and steam from the high-temperature water.

Although water was used as the heat transfer liquid in the above-described embodiments, the present invention is also effective for other heat transfer liquids.

Further, the present invention is effective not only as a tank for storing hot water as in the above embodiment, but also as a tank for storing cold water.

Effects of the invention This invention installs a receiving pipe for heat-exchanged heat medium liquid in parallel to the storage tank body, and supplies all or most of the heated or cooled heat medium liquid to the heat utilization equipment through this receiving pipe. Since the heat transfer liquid is supplied to the storage tank, the heat dissipation loss in the storage tank of the heat exchanged heat medium liquid can be sufficiently reduced, and most of the heat retention is only required to keep the receiving pipe warm, so this can be simplified. This allows equipment costs to be reduced.

Furthermore, even when attempting to newly recover waste heat using an existing tank, it can be easily installed and can be implemented over a wide range of areas.

[Brief explanation of the drawing]

The drawing is a sectional view of a storage tank for waste heat recovery according to the present invention. 1...Water supply pipe, 3...Heat exchanger, 5
...Reception pipe, 7 ... Storage tank body, 9 ... Pump, 11 ... Suction pipe, 13 ... Ventilation pipe.

Claims (1)

[Scope of utility model registration request] 1. In a storage tank that stores the heat medium liquid that has undergone heat exchange at the upstream side and supplies it to the heat utilization equipment for the heat medium liquid at the lower end: A receiving pipe for receiving the heat medium liquid that has undergone heat exchange is installed in parallel to the storage tank body, and A heat medium liquid storage tank characterized in that the bottom of the pipe is connected to a suction pipe that communicates the storage tank body with heat utilization equipment. 2. The heat transfer liquid storage tank according to claim 1, wherein the inner diameter of the receiving pipe is larger than the inner diameter of the suction pipe. 3. The heat medium storage tank according to claim 1, which is a utility model, in which the receiving pipe is kept warm but the storage tank body is not kept warm. 4. The heat medium liquid storage tank according to claim 1, wherein the upper part of the receiving pipe and the storage tank main body are communicated with each other by a ventilation pipe.