System for preparing water for eyewash equipment by utilizing waste heat of circulating water in device
The system, which utilizes the waste heat of circulating water within the device to prepare water for eyewash stations, solves the problems of high energy consumption and high cost in heating water for eyewash stations, and achieves energy-saving, safe, and stable water temperature control and water conservation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LUOYANG RUIZE PETROCHEM ENG
- Filing Date
- 2025-04-18
- Publication Date
- 2026-05-01
AI Technical Summary
Existing water heating solutions for eyewash stations suffer from high energy consumption and high costs, especially in winter when it is difficult to ensure that the water temperature is within a suitable range, and existing devices lack sufficient hot water supply to meet the requirements.
The system uses the waste heat of circulating water within the device to prepare water for eyewash stations. It is equipped with a hot water exchange tank, water supply pipeline, circulation pipeline, external bypass and internal bypass. It utilizes the waste heat of circulating water for heat exchange and combines multiple temperature, flow and pressure monitoring components to ensure that the water temperature is within a suitable range. At the same time, an ultraviolet disinfection module is used to ensure hygiene and safety.
It achieves energy conservation and consumption reduction, improves energy utilization efficiency, ensures the safety and stability of water supply for eyewash stations, reduces the amount of fresh water used, alleviates water shortage problems, and ensures a suitable water temperature under any circumstances.
Smart Images
Figure CN224185886U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of petrochemical hygiene protection technology, and specifically relates to a system for preparing water for eyewash stations using waste heat from circulating water within a device. Background Technology
[0002] In the petrochemical industry, eyewash stations are typically installed for occupational health protection. Standard operating procedures require the water temperature in eyewash stations to be between 16 and 38°C. While this is relatively easy to achieve in summer, in winter, due to lower temperatures, heat tracing is necessary to prevent water pipes from freezing and to maintain the water temperature. Currently, common heat tracing solutions include electric heat tracing and low-temperature hot water tracing. Electric heat tracing consumes a large amount of electricity, resulting in high operating costs. Low-temperature hot water tracing often suffers from a lack of adequate hot water supply within the plant; setting up a separate hot water supply system would not only increase investment costs but also potentially involve complex piping and equipment installation. Therefore, developing an energy-efficient, economical, and effective water heating solution for eyewash stations is of great significance. Utility Model Content
[0003] To address the existing technical problems, this utility model proposes a system for preparing water for eyewash stations by utilizing the waste heat of circulating water within the device, thereby solving the problems of low water efficiency and low safety in current eyewash stations.
[0004] The purpose of this utility model and the technical problem it solves are achieved by the following technical solution. A system for preparing water for an eyewash station using waste heat from circulating water within the device, according to this utility model, includes a hot water exchange tank, a water supply pipeline, a circulation pipeline, a water delivery pipeline, an external bypass pipeline, and an internal bypass pipeline. One end of the water supply pipeline is connected to the hot water exchange tank, and the other end is connected to the source water pipe. A first thermometer, a first valve, a first flow meter, and a second regulating valve are sequentially installed on the water supply pipeline along the water flow direction. One end of the water delivery pipeline is connected to the hot water exchange tank, and the other end is connected to the water-using end of the eyewash station. Along the water flow direction... The system is equipped with an ultraviolet disinfection module, a first pressure transmitter, a first pipeline pump, a second pressure transmitter, and a first electrically controlled valve in sequence. The inlet of the external bypass pipeline is connected to the water supply pipeline, and its inlet is located between the first thermometer and the first valve. The other end is connected to the water supply end of the eyewash station. A second electrically controlled valve is installed on the external bypass pipeline. The inlet of the internal bypass pipeline is connected to the water supply pipeline, and its inlet is located between the second pressure transmitter and the first electrically controlled valve. The other end is connected to the hot water exchange tank. A third electrically controlled valve is installed on the internal bypass pipeline.
[0005] Furthermore, the circulation pipeline includes a water supply pipeline, a heat exchanger, and a return water pipeline connected in sequence. The water supply pipeline is equipped with a fourth thermometer, a third pressure transmitter, a second pipeline pump, and a fourth pressure transmitter in sequence along the direction of water flow. The return water pipeline is equipped with a first regulating valve, a second thermometer, and a second flow meter in sequence along the direction of water flow.
[0006] Furthermore, the hot water tank has a built-in spiral coil, with the inlet end of the spiral coil connected to the inlet end of the return water line and the outlet end connected to the inlet end of the supply water line.
[0007] Furthermore, the hot water tank is equipped with an exhaust valve at the top and a vent valve at the bottom.
[0008] Furthermore, the hot water tank is equipped with a level gauge, a fifth pressure transmitter, and a third thermometer from top to bottom.
[0009] Furthermore, the hot water tank is also equipped with an electric heating module.
[0010] Furthermore, a second maintenance pipeline is installed on the water supply line, and a second maintenance valve is installed on the second maintenance pipeline.
[0011] Furthermore, a first inspection valve is installed on the return water pipeline.
[0012] In summary, this utility model has the following advantages:
[0013] (1) By setting up a circulation pipeline, the waste heat of the circulating water return in the device is fully utilized, and the heat that was originally wasted is effectively recovered and utilized, avoiding the high power consumption of electric heat tracing and other schemes. At the same time, there is no need to consume additional energy to prepare low-temperature hot water, which greatly reduces energy consumption and improves energy utilization efficiency. It also increases the reuse rate of circulating water and reduces the amount of fresh water taken out, which alleviates the water shortage problem to a certain extent and has significant water-saving benefits.
[0014] (2) Multiple temperature, flow rate and pressure monitoring components are set up to monitor and adjust the water temperature in real time, ensuring that the water used in the eyewash station is always in a safe and suitable temperature range. At the same time, the ultraviolet disinfection module ensures the hygiene and safety of the water, and the electric heating module serves as an emergency measure to ensure that the water used in the eyewash station can meet the needs under any circumstances.
[0015] (3) Setting up an external bypass pipeline enables the system to flexibly select the water supply mode according to the incoming water temperature. When the incoming water temperature is suitable, water is supplied directly to improve the system operating efficiency. When the incoming water temperature does not meet the requirements, the waste heat exchange system is activated to ensure the quality and stability of the water used in the eyewash station.
[0016] (4) An internal bypass pipeline can be installed to enhance the water flow in the water tank, strengthen heat exchange, and improve heat exchange efficiency.
[0017] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, preferred embodiments are given below, and detailed descriptions are provided in conjunction with the accompanying drawings. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of a system pipeline for preparing water for eyewash stations using waste heat from circulating water within the device, according to this utility model. Detailed Implementation
[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings and preferred embodiments.
[0020] Please see Figure 1 A system for preparing water for eyewash stations using waste heat from circulating water within the device includes a hot water tank 4, a water supply line 1, a circulation line, a water delivery line 9, an external bypass line 10, and an internal bypass line 8.
[0021] The hot water tank 4 has a built-in 316L stainless steel spiral coil with a graphene coating. The tank's volume can be selected to meet the system's continuous water usage. A sealing test is performed to ensure no leaks, and the internal heat exchange structure is adjusted to guarantee heat exchange stability and a stable water supply to the eyewash station. The top of the hot water tank 4 has an exhaust valve for venting, ensuring stable operation. The bottom of the tank has a vent valve for periodic checks and venting. From top to bottom, the tank 4 is equipped with a level gauge, a fifth pressure transmitter, and a third thermometer to monitor the water level, pressure, and temperature, ensuring stable water supply. The tank also contains an electric heating module 6, connected to the control system. Before use, this module must be checked to ensure its heating performance and temperature control function. During use, start and stop temperatures are set, allowing the module to automatically start in case of heat medium system failure or insufficient water temperature after heat exchange, ensuring the eyewash station uses water within a suitable temperature range.
[0022] One end of the water supply pipeline 1 is connected to the hot water exchange tank 4, and the other end is connected to the source water pipe. Along the water flow direction, the water supply pipeline 1 is equipped with a first thermometer, a first valve, a first flow meter, and a second regulating valve. After the components are installed, the thermometer and flow meter are calibrated using a standard temperature and flow source to ensure data accuracy. Simultaneously, the second regulating valve, the first thermometer, and the first flow meter can be linked to automatically adjust the valve opening according to the temperature and flow rate of the incoming water, maintaining the water temperature in the tank between 16-38℃. One end of the water delivery pipeline 9 is connected to the hot water exchange tank 4, and the other end is connected to the water outlet of the eyewash station. Along the water flow direction, the water delivery pipeline 9 is equipped with a UV disinfection module 11, a first pressure transmitter, a first pipeline pump, a second pressure transmitter, and a first electrically controlled valve. During installation, it is ensured that the UV disinfection module 11 meets the fluid dynamics requirements, allowing the water to fully receive UV irradiation for disinfection. Before use, testing and inspection are conducted to ensure that the disinfection effect meets hygiene standards.
[0023] The inlet of the external bypass pipeline 10 is connected to the water supply pipeline 1, and its inlet is located between the first thermometer and the first valve. The other end is connected to the water supply end of the eyewash station. The external bypass pipeline 10 is equipped with a second electric control valve. Before use, the second electric control valve is adjusted so that it can automatically switch the water supply mode according to the incoming water temperature. When the temperature detected by the first thermometer meets the requirements, the second electric control valve opens, and the source water pipe supplies water directly to the eyewash station through the external bypass pipeline 10. When the temperature does not meet the requirements, the second electric control valve closes, and the source water pipe enters the hot water exchange tank 4.
[0024] The inlet of the internal bypass pipeline 8 is connected to the water supply pipeline 9, and its inlet is located between the second pressure transmitter and the first solenoid valve. The other end is connected to the hot water exchange tank 4. The internal bypass pipeline 8 is equipped with a third solenoid valve. When water supply is not required, the third solenoid valve can be opened and the first solenoid valve can be closed during heat exchange. Through circulation, the water flow state is enhanced and heat exchange is strengthened. When water is supplied to the outside, the third solenoid valve is closed and the first solenoid valve is opened to supply water to the eyewash station.
[0025] The circulation pipeline includes a water supply pipeline 7, a heat exchanger, and a return water pipeline 3 connected in sequence. The heat exchanger is independent of the overall pipeline system. Its inlet (refrigerant end) is connected to the outlet of the water supply pipeline 7, and its outlet (heat medium end) is connected to the inlet of the return water pipeline 3. A fourth thermometer, a third pressure transmitter, a second pipeline pump, and a fourth pressure transmitter are installed in sequence along the water flow direction on the water supply pipeline 7. A first regulating valve, a second thermometer, and a second flow meter are installed in sequence along the water flow direction on the return water pipeline 3. The inlet of the spiral coil in the hot water exchange tank 4 is connected to the inlet of the return water pipeline 3, and the outlet is connected to the inlet of the water supply pipeline 7. The circulating water, after being cooled by the heat exchanger, enters the water supply pipeline 7, re-enters the heat exchanger for heat exchange and heating, and then enters the return water pipeline 3, re-enters the spiral coil. This realizes the recycling of water, improves the utilization rate, and saves water.
[0026] A second maintenance pipeline 2 is installed on the water supply pipeline 1. A second maintenance valve is installed on the second maintenance pipeline 2. The inlet and outlet ends of the second maintenance pipeline 2 are connected to the two ends of the second regulating valve. A first maintenance pipeline 5 is installed on the return water pipeline 3. A first maintenance valve is installed on the first maintenance pipeline 5. The inlet and outlet ends of the first maintenance pipeline 5 are connected to the two ends of the first regulating valve. When the water supply pipeline 1 and the return water pipeline 3 are under maintenance or malfunction, the second regulating valve and the first regulating valve are closed, and the second maintenance valve and the first maintenance valve are opened to ensure a continuous and stable water supply and heating for the hot water tank 4.
[0027] Eyewash station water supply process: The return water (generally around 42℃) after being heated by heat exchanger enters the spiral coil of the hot water tank 4 as the heat medium and exchanges heat with the source water (which does not meet the water temperature of the eyewash station) supplied by the water supply line 1 in a countercurrent manner. After heat exchange, the source water is disinfected by the ultraviolet disinfection module 11 of the water supply line 9 and then sent to the water end of the eyewash station. Water that meets the water temperature of the eyewash station can be directly delivered to the water end of the eyewash station through the external bypass line 10.
[0028] The above description is merely a preferred embodiment of this utility model. Any simple modifications, equivalent changes, and alterations made by those skilled in the art to the above embodiments based on the technical essence of this utility model without departing from the scope of the technical solution of this utility model shall still fall within the scope of the technical solution of this utility model.
Claims
1. A system for preparing water for eyewash stations using waste heat from circulating water within the device, characterized in that: It includes a hot water tank (4), a water supply pipeline (1), a circulation pipeline, a water transmission pipeline (9), an external bypass pipeline (10), and an internal bypass pipeline (8). One end of the water supply pipeline (1) is connected to the hot water exchange tank (4), and the other end is connected to the source water pipe. The water supply pipeline (1) is provided with a first thermometer, a first valve, a first flow meter, and a second regulating valve in sequence along the direction of water flow. One end of the water transmission pipeline (9) is connected to the hot water exchange tank (4), and the other end is connected to the water end of the eyewash station. The water transmission pipeline (9) is provided with an ultraviolet disinfection module (11), a first pressure transmitter, a first pipeline pump, a second pressure transmitter, and a first electric control valve in sequence along the direction of water flow. The inlet of the external bypass pipeline (10) is connected to the water supply pipeline (1), and its inlet is located between the first thermometer and the first valve. The other end is connected to the water end of the eyewash station. A second electrically controlled valve is provided on the external bypass pipeline (10). The inlet end of the internal bypass pipeline (8) is connected to the water supply pipeline (9), and its inlet end is located between the second pressure transmitter and the first electric control valve. The other end is connected to the hot water exchange tank (4). A third electric control valve is provided on the internal bypass pipeline (8).
2. The system for preparing water for eyewash stations using waste heat from circulating water within the device, as described in claim 1, is characterized in that: The circulation pipeline includes a water supply pipeline (7), a heat exchanger, and a return water pipeline (3) connected in sequence. The water supply pipeline (7) is equipped with a fourth thermometer, a third pressure transmitter, a second pipeline pump, and a fourth pressure transmitter in sequence along the direction of water flow. The return water pipeline (3) is equipped with a first regulating valve, a second thermometer, and a second flow meter in sequence along the direction of water flow.
3. The system for preparing water for eye wash device using residual heat of circulating water in the device according to claim 2, characterized in that: The hot water tank (4) has a built-in spiral coil. The inlet end of the spiral coil is connected to the inlet end of the return water line (3), and the outlet end is connected to the inlet end of the water supply line (7).
4. The system for preparing water for eye wash device using residual heat of circulating water in the device according to claim 1, characterized in that: The hot water tank (4) is equipped with an exhaust valve at the top and a vent valve at the bottom.
5. A system for preparing water for eyewash stations using waste heat from circulating water within the device, as described in claim 1, characterized in that: The hot water tank (4) is equipped with a level gauge, a fifth pressure transmitter, and a third thermometer from top to bottom.
6. A system for preparing water for eyewash stations using waste heat from circulating water within the device, as described in claim 1, characterized in that: The hot water tank (4) is also equipped with an electric heating module (6).
7. The system for preparing water for eye wash device using residual heat of circulating water in the device according to claim 1, characterized in that: A second maintenance pipeline (2) is provided on the water supply pipeline (1), and a second maintenance valve is provided on the second maintenance pipeline (2).
8. The system for preparing water for eye wash device using residual heat of circulating water in the device according to claim 2, characterized in that: The return water pipeline (3) is equipped with a first maintenance pipeline (5), and the first maintenance pipeline (5) is equipped with a first maintenance valve.