阅读说明：本技术 利用内燃机缸套水对用户生活热水及采暖供热的方法 (method for supplying domestic hot water and heating by using internal combustion engine cylinder sleeve water ) 是由 孙建国 于 2019-09-20 设计创作，主要内容包括：本发明属于余热回收利用技术领域,具体地涉及利用油田气行业中的燃气内燃机缸套水余热对用户生活热水及采暖供热的方法,燃气内燃机缸套水的热量与热媒水交换后,热媒水携带燃气内燃机缸套水的热量兵分两路,一路给采暖供热,另一路给生活热水供热；本发明根据生活热水和采暖热水的供水温度要求,充分利用内燃机缸套水与各需求热水之间的温度差进行逐级的热传递。因为降低热源温度,从而降低设备成本、提高系统负荷可调性、增加系统安全性。(The invention belongs to the technical field of waste heat recovery and utilization, and particularly relates to a method for supplying heat to user domestic hot water and heating by using waste heat of cylinder liner water of a gas internal combustion engine in the oil field gas industry, wherein after the heat of the cylinder liner water of the gas internal combustion engine is exchanged with heat medium water, the heat medium water carries the heat of the cylinder liner water of the gas internal combustion engine and is divided into two paths, one path supplies heat to the heating, and the other path supplies heat to the domestic hot water; according to the requirements of the water supply temperature of domestic hot water and heating hot water, the invention fully utilizes the temperature difference between the cylinder liner water of the internal combustion engine and each required hot water to carry out gradual heat transfer. Because the temperature of the heat source is reduced, the equipment cost is reduced, the load adjustability of the system is improved, and the safety of the system is improved.)

1. The method for utilizing the cylinder liner water of the internal combustion engine to supply heat to the domestic hot water and the heating of the user is characterized in that the cylinder liner water of the internal combustion engine is the cylinder liner water of the internal combustion engine in the oil field gas industry, after the heat of the cylinder liner water of the gas internal combustion engine is exchanged with the heat medium water, the heat medium water carries the heat of the cylinder liner water of the gas internal combustion engine to divide into two paths, one path supplies heat to the heating user, and the other path supplies heat to the domestic hot water;

The specific process is as follows:

The heat exchange is carried out between the cylinder liner water of the gas internal combustion engine and the heat medium water in the plate heat exchanger, the heat is transferred to the heat medium water by the cylinder liner water of the gas internal combustion engine, after the heat medium water receives the heat, a part of the heat medium water is sent to a heating system of a heating user by a heat medium water circulating pump to serve as a heating medium, the heat is transferred to the heating of the user by a heat dissipation device arranged in a room of the heating user, meanwhile, the other part of the heat medium water is sent to the volume heat exchanger by the heat medium water circulating pump to exchange heat with the domestic hot water stored in the volume heat exchanger, the heat is transferred to the domestic hot water from the heat medium water, the domestic hot water is heated to the temperature required by the user, and the domestic hot water is conveyed; after heat dissipation of the two paths of heat medium water is finished, the heat medium water is conveyed into the plate heat exchanger through the water return pipeline to exchange heat with the cylinder sleeve water of the internal combustion engine, and the next circulation is repeated.

2. The method for supplying hot water and heating to users by using the cylinder liner water of the internal combustion engine as claimed in claim 1, wherein the cylinder liner water of the internal combustion engine is used for cooling a cylinder liner of a gas internal combustion engine generator set of an oil and gas station, and the temperature of the cylinder liner water of the internal combustion engine is 82-88 ℃.

3. The method for heating and supplying hot water for users by using the cylinder liner water of the internal combustion engine as claimed in claim 1, wherein the internal combustion engine is internally provided with a circulating pump, the cylinder liner water of the internal combustion engine is conveyed to an air cooler matched with a generator set of the internal combustion engine through the internally provided circulating pump, and a bypass connecting plate type heat exchanger is additionally arranged in a pipeline for removing the cylinder liner water of the internal combustion engine from the air cooler.

4. the method as claimed in claim 1, wherein the domestic hot water in the positive displacement heat exchanger exchanges heat with the heating medium water under a pressure corresponding to the pressure of the domestic hot water supplied by the user.

5. The method for supplying domestic hot water and heating of a user by using liner water of an internal combustion engine as claimed in claim 1, wherein a domestic hot water circulating pump is connected between the domestic hot water supply network and the positive displacement heat exchanger.

Technical Field

The invention belongs to the technical field of waste heat recovery and utilization, and particularly relates to a method for supplying domestic hot water and heating for users by using waste heat of cylinder liner water of an internal combustion engine in the oil field gas industry.

background

The gas internal combustion engine generator set of the oil and gas industry station makes full use of various natural gases or harmful gases as fuels, changes waste into valuable, runs safely and conveniently, and is generally arranged at a place far away from a city, so that central heating cannot be performed in winter, and only indoor air conditioners or small boilers can be used for heating. The temperature of water in a cylinder sleeve of a power generator of a gas internal combustion engine is about 85 ℃, the temperature of exhaust gas is about 550 ℃, the utilization of waste heat at present mainly utilizes the waste heat of high-temperature flue gas, and in order to protect a unit, the rest energy generally needs to be dissipated by a medium. For a station yard which needs heating without central heating, the waste heat is an unavailable heat. If can transfer this kind of heat to staff's dormitory or office from the generator, not only can be to the generator unit cooling, practiced thrift the energy moreover.

The initial investment cost of the high-temperature flue gas heat exchange equipment is very high, and the high-temperature flue gas three-way valve has poor sealing performance and reliability, so that the load adjustability and the safety of the heat exchange equipment in the operation process are poor. For a station with only heating requirement, not only the problem of investment cost needs to be considered, but also the higher adjustability and safety of the system need to be considered. The common flue gas waste heat utilization equipment is not easy to meet the requirements.

Disclosure of Invention

The invention aims to overcome the defects of the technical problems and provides a method for supplying heat to domestic hot water and heating of users by using the waste heat of cylinder sleeve water of a gas combustion engine in the oil field gas industry. According to the scheme, on the premise of meeting the load of domestic hot water and heating and the water supply temperature, the cylinder liner water of the gas internal combustion engine is selected as the heating heat source of the whole system, the low-temperature heat source of the unit is fully utilized, the equipment cost and the system control difficulty are reduced, and the safety and reliability of the system are improved.

The technical scheme for solving the technical problems is as follows:

The method for utilizing the cylinder liner water of the internal combustion engine to supply heat to the domestic hot water and the heating of users, the cylinder liner water of the internal combustion engine is the cylinder liner water of the internal combustion engine in the oil field gas industry, after the heat of the cylinder liner water of the gas internal combustion engine exchanges with the heat medium water, the heat medium water carries the heat of the cylinder liner water of the gas internal combustion engine and divides into two paths, one path supplies heat to the heating, and the other path supplies heat to the domestic hot water;

The specific process is as follows:

the heat exchange is carried out between the cylinder liner water of the gas internal combustion engine and the heat medium water in the plate heat exchanger, the heat is transferred to the heat medium water by the cylinder liner water of the gas internal combustion engine, after the heat medium water receives the heat, a part of the heat medium water is sent to a heating system of a heating user by a heat medium water circulating pump to serve as a heating medium, the heat is transferred to the heating user by a heat dissipation device arranged in a room of the heating user, meanwhile, the other part of the heat medium water is sent to the volume heat exchanger by the heat medium water circulating pump to exchange heat with the domestic hot water stored in the volume heat exchanger, the heat is transferred to the domestic hot water from the heat medium water, the domestic hot water is heated to the temperature required by the user, and the domestic hot water is conveyed to the; after heat dissipation of the two paths of heat medium water is finished, the heat medium water is conveyed into the plate heat exchanger through the water return pipeline to exchange heat with the cylinder sleeve water of the internal combustion engine, and the next circulation is repeated.

Further, the internal combustion engine cylinder liner water is used for cooling a cylinder liner of a gas internal combustion engine generator set of an oil and gas station, and the temperature of the internal combustion engine cylinder liner water is 82-88 ℃.

The internal combustion engine is internally provided with a circulating pump, the cylinder liner water of the internal combustion engine is conveyed to an air cooler matched with the internal combustion engine generator set through the internal circulating pump, and a bypass connecting plate type heat exchanger is additionally arranged in a pipeline for removing the cylinder liner water of the internal combustion engine to the air cooler.

Furthermore, the domestic hot water in the positive displacement heat exchanger exchanges heat with the heating medium water under a certain pressure, and the pressure is consistent with the pressure of the domestic hot water supplied by a user.

Furthermore, a domestic hot water circulating pump is connected between the domestic hot water supply pipe network and the positive displacement heat exchanger.

The invention has the beneficial effects that:

The invention provides a method for supplying hot water for life and heating of a user by using cylinder liner water of an internal combustion engine, wherein a heat source of the whole system is from the cylinder liner water of the internal combustion engine, the temperature of the cylinder liner water of the internal combustion engine is 82-88 ℃ after the cylinder liner water of the internal combustion engine is cooled, and the cylinder liner water of the internal combustion engine is pumped to an air cooler matched with a unit through a built-in circulating pump. The invention adds a bypass on the pipeline of the cylinder liner water of the internal combustion engine to the air cooler and arranges a platen heat exchanger. Because the system has large heat supply load fluctuation, the cylinder liner water of the internal combustion engine cannot be completely cooled to the temperature required by equipment through the plate heat exchanger, and the cylinder liner water of the internal combustion engine still needs to be cooled to the required temperature by an air cooler after passing through the plate heat exchanger. Because the temperature of the heat source is 82-88 ℃, the temperature is far lower than the saturation temperature of water at the working pressure, the possibility of boiling of the heat medium water in the plate heat exchanger does not exist, and the safety of the system is greatly improved.

According to the requirements of the water supply temperature of domestic hot water and heating hot water, the invention fully utilizes the temperature difference between the cylinder liner water of the internal combustion engine and each required hot water to carry out gradual heat transfer. Because the temperature of the heat source is reduced, the equipment cost is reduced, the load adjustability of the system is improved, and the safety of the system is improved.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic diagram of a heating process according to the present invention;

in the figure: 01 is a gas internal combustion engine generator set, 02 is a plate heat exchanger, 03 is a heat medium water circulating pump, 04 is a heating user heating system, 05 is a positive displacement heat exchanger, 06 is a living hot water circulating pump, and 07 is a living hot water supply network.

Detailed Description