CN212299620U

CN212299620U - Energy-saving cooling circulation device

Info

Publication number: CN212299620U
Application number: CN202020983195.7U
Authority: CN
Inventors: 不公告发明人
Original assignee: Jiangsu Zhengneng Isotope Co ltd
Current assignee: Jiangsu Zhengneng Isotope Co ltd
Priority date: 2020-06-02
Filing date: 2020-06-02
Publication date: 2021-01-05
Anticipated expiration: 2030-06-02

Abstract

The utility model discloses an energy-saving cooling circulation device, which comprises an inner circulation device and an outer circulation device, wherein the inner circulation device comprises a high-level water tank, a buffer tank, a booster pump and a heat exchanger group, the heat exchanger group is the process end of isotope separation equipment positioned at a high position and is provided with a plurality of heat exchangers for heat exchange, the outlets of cooling media of the heat exchangers are collected to the high-level water tank, the outer circulation device comprises a water cooling tower, an open-air circulating water tank and a clean water pump, the water cooling tower is arranged on the open-air circulating water tank and is used for cooling the media at the outlets of the plate heat exchangers, the clean water pump extracts the media in the open-air circulating water tank to enter the plate heat exchangers, the inner circulation can be kept clean due to the separation of the inner circulation and the outer circulation, the heat exchangers are not required to be stopped to clean the heat exchangers at the high position, only, the long-time stable operation of stable isotope separation is ensured.

Description

Energy-saving cooling circulation device

Technical Field

The utility model relates to a chemical industry equipment heat transfer cooling technology field specifically is an energy-conserving cooling cycle device.

Background

In the separation process of the stable isotope, separation and purification are carried out by utilizing the tiny volatility difference of the isotope, the difficulty is very high, long-time stable continuous separation treatment such as vapor-liquid phase change, heat exchange and the like is needed, and the whole process can obtain the stable isotope product with higher abundance without stopping and continuously running.

In the existing cooling circulation process, a medium is generally directly input into a heat exchanger located at a high position through a pump to cool materials, and then the cooled materials are cooled through a water cooling tower by means of the gravity of the medium through a pipeline and then return to a circulation water pool. The process directly uses a medium which is in direct contact with the outside, and has defects. The circulating medium is exposed in the air, has higher temperature and is in direct contact with the open air, so that scales and growing algae are very easy to breed, and the heat exchange efficiency of the heat exchanger is easily influenced even a tiny heat exchange pipeline is blocked due to long-time operation, so that equipment such as the heat exchanger, a pipeline circulating water tank and the like needs to be regularly stopped and cleaned, and the separation efficiency of stable isotope products or the production efficiency of a chemical production process needing long-time uninterrupted operation is not facilitated. For example, the stable isotope heavy oxygen water needs to go through an equilibrium period of about 1 year in the production process to obtain proper high-abundance heavy oxygen water, and if the balance period of 1 month needs to be carried out again after parking, overhauling and restarting to reach the abundance before parking, no output exists in the period.

In addition, in the process, the heat exchange medium needs to be pumped to a high place to participate in heat exchange and then falls back to the circulating water tank by virtue of natural gravity, and then is pumped to the upstairs again through the pump to do work and consume energy, so that much energy is wasted, and more power consumption is generated.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an energy-conserving cooling cycle device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an energy-saving cooling circulation device comprises an inner circulation device and an outer circulation device, wherein the inner circulation device comprises a high-level water tank, a buffer tank, a booster pump and a heat exchanger group, the heat exchanger group is a plurality of heat exchangers used for heat exchange and positioned at the tail end of a high-level isotope separation equipment process, and outlets of cooling media of the heat exchangers in the heat exchanger group are communicated with the high-level water tank; the outer circulating device comprises a water cooling tower, an open-air circulating water tank and a clean water pump, wherein the water cooling tower is arranged on the open-air circulating water tank, the open-air circulating water tank is communicated with the plate heat exchanger through a pipeline, and the plate heat exchanger is communicated with the buffer tank.

Preferably, the clean water pump is installed on a pipeline between the outdoor circulating water tank and the plate heat exchanger.

Preferably, an overflow port, a ball float valve and a water replenishing pipeline are arranged in the high-level water tank.

Preferably, the high-level water tank is higher than the heat exchanger group.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses the structure principle is simple, because the internal-external circulation part, the internal circulation can keep clean, need not the heat exchanger of the clearance eminence of stopping, only need use two platen heat exchangers, regularly clear up one of them, use another, can realize heat transfer system's incessant normal operating all the year round, guarantee the long-time even running of stability isotope separation, and simultaneously, the electric energy can be practiced thrift to the utilization gravitational potential energy as far as possible, needn't waste electric power and provide high lift, only need overcome the pipeline, the valve, the resistance of equipment.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: an energy-saving cooling circulation device comprises an inner circulation device and an outer circulation device, wherein the inner circulation device comprises a high-level water tank 1, a buffer tank 3, a booster pump 4 and a heat exchanger group 5, the heat exchanger group 5 is a plurality of heat exchangers used for heat exchange and positioned at the tail end of a high-level isotope separation equipment process, and outlets of cooling media of the heat exchangers in the heat exchanger group 5 are communicated with the high-level water tank 1; the external circulation device comprises a water cooling tower 7, an open-air circulation water tank 8 and a clean water pump 6, wherein the water cooling tower 7 is arranged on the open-air circulation water tank 8, the open-air circulation water tank 8 is communicated with the plate heat exchanger 2 through a pipeline, and the plate heat exchanger 2 is communicated with the buffer tank 3; the clean water pump 6 is arranged on a pipeline between the open-air circulating water tank 8 and the plate heat exchanger 2.

The utility model discloses in, be equipped with overflow mouth, ball-cock assembly and moisturizing pipeline in the high-order basin 1. The medium in the high-level water tank is ensured to be at a higher liquid level, and the full pipe is ensured to flow into the plate heat exchanger. The overflow port can prevent the cooling medium from overflowing due to fluctuation when the internal circulation is started and stopped.

The utility model discloses in, high-order basin 1 position is higher than heat exchanger group 5 in order to ensure that the heat exchanger internal cooling medium pipeline is full of tubes.

The working principle is as follows: the heat exchange medium is collected in the high-level water tank and naturally flows into the plate heat exchanger through a pipeline to be cooled and then enters the buffer tank; the water enters a heat exchanger group after being pressurized by a booster pump; the internal and external circulation completes heat exchange at the plate heat exchanger, the heat exchanger has two, one is used, the other is reserved after cleaning, and the timely switching can be realized by valve control.

When circulation is started, the process material is cooled by the internal circulation, the internal circulation medium is cooled by the external circulation medium, and the external circulation medium is cooled in the air. Because the internal circulation is located indoor and in the pipeline, hardly with external direct contact, can not form incrustation scale and alga, daily need not clear up the maintenance to the heat transfer group. The external circulation is exposed in air for a long time and is easy to bring dust into the air, algae are bred, the plate heat exchanger and the water cooling tower need to be cleaned, and the non-stop operation all year round can be realized only by alternately using the two heat exchangers due to the requirement of process continuity.

In the production process of isotope heavy oxygen water, before the process is not adopted, circulating water is directly pumped into a heat exchanger, the heat exchanger has a mean height of 30 m, and the flow velocity of a heat exchange medium is 200m³The selected pump is ISWD150-400 type, and the flow rate is 200m³The pump has the advantages of being 46m in head, 72% in efficiency and 37kw in rated power, and in practical application, after the heat exchange effect is achieved, the total power consumption of the pump is 35 kw. After the technology is adopted, the internal circulating pump adopts an ISG200-250 type vertical single-stage pipeline pump with the flow rate of 200m³H, 20m of lift, 80% of efficiency, 18.5kw of rated power, and 150-20 of ISWD selected for external circulation0 (I) type self-suction clean water pump with flow rate of 216 m³The lift is 8.9 meters, and the rated power is 11 kw. The total power consumption after actually meeting the heat exchange requirement is 29kw, and the electric energy is saved by 17.14%. By adopting the process, the heat exchange effect of the current internal circulation heat exchanger is good in 2 years, the external circulation is cleaned twice without stopping, and the expected design effect is completely achieved.

To sum up, the utility model discloses the structure principle is simple, because the internal-external circulation part, the internal circulation can keep clean, need not the heat exchanger of the clearance eminence of stopping, only needs to use two platen heat exchangers, regularly clears up one of them, uses another one, can realize heat transfer system's incessant normal operating all the year round, ensures the long-time even running of stability isotope separation, simultaneously, the electric energy can be practiced thrift to the utilization gravitational potential energy of trying one's best, needn't waste electric power and provide high lift, only need overcome the resistance of pipeline, valve, equipment.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an energy-conserving cooling cycle device, includes inner loop device and outer loop device, its characterized in that: the internal circulation device comprises a high-level water tank (1), a buffer tank (3), a booster pump (4) and a heat exchanger group (5), wherein the heat exchanger group (5) is a plurality of heat exchangers used for heat exchange and positioned at the tail end of the high-level isotope separation equipment process, and outlets of cooling media of the heat exchangers in the heat exchanger group (5) are communicated with the high-level water tank (1); the outer circulating device comprises a water cooling tower (7), an open-air circulating water tank (8) and a clean water pump (6), wherein the water cooling tower (7) is arranged on the open-air circulating water tank (8), the open-air circulating water tank (8) is communicated with the plate heat exchanger (2) through a pipeline, and the plate heat exchanger (2) is communicated with the buffer tank (3).

2. The energy saving cooling cycle apparatus according to claim 1, wherein: and the clean water pump (6) is arranged on a pipeline between the open-air circulating water tank (8) and the plate heat exchanger (2).

3. The energy saving cooling cycle apparatus according to claim 1, wherein: an overflow port, a ball float valve and a water replenishing pipeline are arranged in the high-level water tank (1).

4. The energy saving cooling cycle apparatus according to claim 1, wherein: the position of the high-level water tank (1) is higher than that of the heat exchanger group (5).