CN219509743U

CN219509743U - Circulating hot water residual pressure utilization system

Info

Publication number: CN219509743U
Application number: CN202320389460.2U
Authority: CN
Inventors: 王耀; 边亭亭; 高建民; 黄公青
Original assignee: Inner Mongolia Boda Field Chemical Co ltd
Current assignee: Inner Mongolia Boda Field Chemical Co ltd
Priority date: 2023-03-02
Filing date: 2023-03-02
Publication date: 2023-08-11
Anticipated expiration: 2033-03-02

Abstract

The utility model provides a circulating hot water residual pressure utilization system, relates to the field of circulating water residual pressure utilization, and solves the problems that in the circulating hot water residual pressure utilization system in the prior art, a hydraulic turbine directly utilizes the residual pressure of hot water, and the hydraulic turbine is easy to generate cavitation phenomenon, and comprises a circulating hot water pipe, a first heat exchanger, the hydraulic turbine and a generator; the circulating hot water pipe is provided with a bypass pipe; the bypass pipe is sequentially connected with the first heat exchanger and the water turbine; the water turbine is connected with the generator; and a water outlet pipe of the water turbine is connected with the circulating hot water pipe. The utility model is arranged before hot water passes through the water turbine, firstly, the heat of the hot water is recycled, and the hot water is converted into cold water and then passes through the water turbine, so that the cavitation phenomenon of the water turbine is reduced, and the service life is prolonged.

Description

Circulating hot water residual pressure utilization system

Technical Field

The utility model relates to the field of circulating water residual pressure utilization, in particular to a circulating hot water residual pressure utilization system.

Background

The excess pressure of the circulating water system of a chemical plant is often used to convert into mechanical energy for a water turbine, which is then used to drive a power generation point. For example, patent publication number CN201582037U discloses a cooling tower circulating water excess pressure utilizing device, which utilizes circulating water excess pressure to generate electricity. For the utilization of the residual pressure of the circulating hot water, the patent with the publication number of CN205048784U discloses an industrial circulating cooling water residual heat and residual pressure recovery heat pump system, which firstly utilizes the residual pressure to drive a compressor through a water turbine and then recovers the residual heat. However, the hot water passes through the water turbine, so that cavitation of the water turbine is easily caused, and the service life of the water turbine is shortened.

Disclosure of Invention

The utility model aims to solve the problem that the water turbine of the circulating hot water residual pressure utilization system in the prior art directly utilizes the residual pressure of hot water, and the water turbine is easy to generate cavitation.

The embodiment of the utility model is realized by the following technical scheme:

a circulating hot water residual pressure utilization system comprises a circulating hot water pipe, a first heat exchanger, a water turbine and a generator; the circulating hot water pipe is provided with a bypass pipe; the bypass pipe is sequentially connected with the first heat exchanger and the water turbine; the water turbine is connected with the generator; and a water outlet pipe of the water turbine is connected with the circulating hot water pipe.

Preferably, the outlet pipe of the first heat exchanger is provided with a temperature sensor.

Preferably, the inlet pipe of the water turbine and the outlet pipe of the water turbine are both provided with automatic valves.

Preferably, the inlet pipe of the water turbine is provided with an adjustable booster pump.

Preferably, the inlet pipe of the water turbine and the outlet pipe of the water turbine are flexible pipes.

Preferably, the bearing surface of the water turbine is provided with a vibration sensor.

Preferably, a second heat exchanger is included; the second heat exchanger is arranged at a section of the circulating hot water pipe close to the outlet end of the bypass pipe.

The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects:

the utility model is arranged before hot water passes through the water turbine, firstly, the heat of the hot water is recycled, and the hot water is converted into cold water and then passes through the water turbine, so that the cavitation phenomenon of the water turbine is reduced, and the service life is prolonged.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a circulating hot water residual pressure utilization system provided by the utility model;

icon: 1-circulating hot water pipe, 2-first heat exchanger, 3-hydraulic turbine, 4-generator, 5-bystander pipe, 6-automatic valve, 7-adjustable booster pump, 8-flexible pipe, 9-second heat exchanger.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Example 1

As shown in fig. 1, a circulating hot water residual pressure utilization system comprises a circulating hot water pipe 1, a first heat exchanger 2, a water turbine 3 and a generator 4; the circulating hot water pipe 1 is provided with a bypass pipe 5; the bypass pipe 5 is connected with the first heat exchanger 2 and the water turbine 3 in sequence; the water turbine 3 is connected with the generator 4; the water outlet pipe of the water turbine 3 is connected with the circulating hot water pipe 1.

In practice, the hot water is more likely to reach vaporization pressure than the cold water to generate bubbles. When water flows to the high pressure area, as the pressure is increased, the bubbles are condensed, and the water flow particles collide with the center of the bubbles at high speed to fill the gaps generated by condensation, so that the blade is subjected to great hydraulic impact and electrochemical action, and is degraded to generate pits and honeycomb holes, and even is penetrated to form holes. Cavitation damage can lead to reduced efficiency of equipment use and even damage with significant consequences and impact. Therefore, the utility model can recycle the residual heat before utilizing the residual pressure of the hot water, thereby reducing cavitation. If the excess pressure is relatively high, a plurality of sets of bypass pipes 5 may be provided for driving a plurality of sets of generators 4.

In this embodiment, the outlet pipe of the first heat exchanger 2 is provided with a temperature sensor.

In the specific implementation process, the temperature of the water flow at the outlet of the first heat exchanger 2 is detected, so that the overhigh temperature is avoided.

In this embodiment, the inlet pipe of the water turbine 3 and the outlet pipe of the water turbine 3 are both provided with automatic valves 6.

In the specific implementation process, the water flow can be regulated through the automatic valve 6. The water flow is small, the rotation of the water turbine 3 is slow, the generated energy is small, and the water flow is large, so that the stability of the water turbine 3 is poor.

In this embodiment, the inlet pipe of the water turbine 3 is provided with an adjustable booster pump 7.

In the specific implementation process, if the residual pressure is smaller, the generated power is difficult to directly utilize, and the generated power can be pressurized through the adjustable booster pump 7.

In this embodiment, the inlet pipe of the water turbine 3 and the outlet pipe of the water turbine 3 are flexible pipes 8.

In a specific implementation, the flexible tube 8 may be a rubber tube. Because the vibration of the water turbine 3 can drive the vibration of the pipeline, and the pipeline is connected with various large chemical equipment, the instability of the pipeline is easy to generate safety accidents. The use of flexible tubing 8 can be used to release vibrational energy very well.

In this embodiment, the bearing surface of the turbine 3 is provided with vibration sensors.

In the specific implementation process, if the amplitude and frequency of the water turbine 3 are monitored to be too high, maintenance or replacement can be performed.

In this embodiment, a second heat exchanger 9 is included; the second heat exchanger 9 is arranged at a section of the circulating hot water pipe 1 close to the outlet end of the bypass pipe 5.

In the specific implementation process, the water waste heat passing through the bypass pipe 5 is recycled by the first heat exchanger 2, and the water waste heat of the other part of the direct-circulation hot water pipe 1 is recycled by the second heat exchanger 9.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The circulating hot water residual pressure utilization system is characterized by comprising a circulating hot water pipe, a first heat exchanger, a water turbine and a generator; the circulating hot water pipe is provided with a bypass pipe; the bypass pipe is sequentially connected with the first heat exchanger and the water turbine; the water turbine is connected with the generator; and a water outlet pipe of the water turbine is connected with the circulating hot water pipe.

2. The circulating hot water residual pressure utilizing system according to claim 1, wherein the outlet pipe of the first heat exchanger is provided with a temperature sensor.

3. The circulating hot water residual pressure utilizing system according to claim 1, wherein the inlet pipe of the water turbine and the outlet pipe of the water turbine are provided with automatic valves.

4. The circulating hot water residual pressure utilizing system according to claim 1, wherein the water turbine inlet pipe is provided with an adjustable booster pump.

5. The circulating hot water residual pressure utilizing system of any one of claims 1-4, wherein the inlet pipe of the water turbine and the outlet pipe of the water turbine are flexible pipes.

6. The circulating hot water residual pressure utilizing system of claim 5, wherein a bearing surface of the water turbine is provided with a vibration sensor.

7. The circulating hot water residual pressure utilizing system of claim 5, comprising a second heat exchanger; the second heat exchanger is arranged at a section of the circulating hot water pipe close to the outlet end of the bypass pipe.