Constant-temperature gas supply system
By designing a constant temperature gas supply system including multiple constant temperature devices and direct supply pipelines, the problems of unstable temperature control and high energy consumption in the prior art are solved, and more refined temperature control and higher system reliability are achieved.
Patent Information
- Application Number
- CN202421049778.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-05-14
AI Technical Summary
The existing compressed gas constant temperature control technology is difficult to control the temperature of compressed air within a specific range, especially when the temperature is unstable during cold start or first start, and the temperature control of the cooling device is not fine enough, the energy consumption is high, and there is no sustainable ability to deal with faults.
A constant temperature gas supply system is designed, including a compressed air source, a cooling water source, at least two constant temperature devices, direct supply pipelines and gas storage tanks. The system supplies gas through two-channel equipment and direct supply pipelines. The cooler continuously operates to achieve more refined cooling control. Redundant backups avoid downtime. The two identical branches behind the gas storage tank have filtering devices to ensure the sustainability and stability of the gas supply.
It realizes precise temperature control of compressed air, improves the reliability and stability of the system, avoids downtime, ensures continuous air supply in the event of failure, reduces energy consumption, and improves the precision of temperature control.
Smart Images
Figure CN222577956U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a constant temperature device for gas supply, in particular to a constant temperature gas supply system, belonging to the technical field of compressed gas constant temperature. Background Art
[0002] Compressed gas is widely used in industry and scientific research. With the rapid development of science and technology, some high-tech industries have gradually emerged. Many components such as OLED (self-luminous liquid crystal display) have extremely high requirements for the working environment. The moisture content, particle size and number of the gas environment need to be controlled within a certain range, so the air in its production environment needs advanced purification treatment.
[0003] In the prior art, the air is usually compressed first and then purified and dried. The temperature of the compressed air after treatment can reach up to 35°C, while the temperature requirement for producing LCD screens is 23±1°C, so the compressed air needs to be cooled. Since the temperature of compressed air fluctuates, it is difficult for conventional cooling methods to control the temperature within the required temperature range. In addition, the existing compressed gas has some shortcomings when it is supplied to the use scenario, such as the inability to judge the temperature during cold start or initial start, resulting in unstable supply gas temperature; and the existing cooling device is not precise enough in controlling the temperature and has high energy consumption; and it does not have sustainable capabilities for handling after a failure. Summary of the invention
[0004] The technical problem to be solved by the utility model is to provide a constant temperature gas supply system, which solves the problem of constant temperature control of compressed gas.
[0005] The technical problem to be solved by the utility model is achieved by adopting the following technical solutions:
[0006] The utility model provides a constant temperature gas supply system, including a compressed air source, a cooling water source, at least one first constant temperature device, at least one second constant temperature device, a direct supply pipeline and a gas storage tank, wherein:
[0007] The compressed air source and the cooling water source are both connected to the first thermostatic device and the second thermostatic device;
[0008] The gas supply pipeline of the first thermostat or the second thermostat is connected to the heating device, wherein:
[0009] The gas supply pipeline of the first thermostatic device is connected to the first heating device of the heating device;
[0010] The heating device is connected to the gas storage tank, wherein the gas storage tank is connected to the terminal gas supply pipeline through a pipeline, wherein,
[0011] The terminal air supply pipeline is also connected to the compressed air source through a direct supply pipeline.
[0012] As a preferred technical solution of the utility model, the first constant temperature device includes an air inlet pipe, a water inlet pipe and a cooler, wherein:
[0013] The compressed air source is connected to the air supply pipeline through the air intake pipe, and the air intake pipe is provided with an air intake temperature sensor, an air intake pressure sensor and an air intake valve in sequence;
[0014] The intake valve is connected to the cooler through a pipeline, wherein:
[0015] The cooler is connected to the air supply pipeline.
[0016] As a preferred technical solution of the utility model, a bypass and a bypass valve are further provided between the intake valve and the intake pressure sensor, wherein:
[0017] The bypass is connected to the air supply pipeline.
[0018] As a preferred technical solution of the utility model, the cooling water source is connected to the water outlet pipeline through the water inlet pipe, wherein:
[0019] The water inlet pipe is provided with a water inlet temperature sensor, a water inlet flow valve and a water inlet valve in sequence;
[0020] The water inlet pipe enters the cooler after the water inlet valve, wherein:
[0021] The cooler is connected to a water outlet pipeline, a water outlet valve is arranged on the water outlet pipeline, and the water outlet pipeline is connected to a drain port.
[0022] As a preferred technical solution of the utility model, after the cooler, it is connected to the drain outlet through another pipeline, and a drain valve is arranged on the pipeline.
[0023] As a preferred technical solution of the utility model, the gas storage tank is connected to at least two filtering devices, wherein:
[0024] The first constant temperature device or the second constant temperature device has a corresponding filtering device;
[0025] The gas storage tank is also connected to a gas release pipeline, wherein:
[0026] The air release pipeline is also provided with an air release valve and a muffler.
[0027] As a preferred technical solution of the present utility model, the first constant temperature device and the second constant temperature device have the same structure.
[0028] As a preferred technical solution of the utility model, an air pipe inspection valve is provided on the air intake pipe.
[0029] As a preferred technical solution of the utility model, a water inlet inspection valve is provided on the water inlet pipe.
[0030] As a preferred technical solution of the utility model, a gas storage pressure sensor is provided between the terminal gas supply pipeline and the gas storage tank.
[0031] The beneficial effects of the utility model are as follows: the utility model can improve the guarantee capability by supplying gas through two-way equipment (a first constant temperature device and a second constant temperature device) and a direct supply pipeline; the cooler runs continuously, and the cooling can be controlled more finely; redundant backup can avoid downtime, and the two identical branches after the gas tank (a first constant temperature device and a second constant temperature device) are both equipped with filtering devices, and a failure in one of them will not affect the gas supply; there is a thermal insulation structure at the terminal (such as providing an insulation layer on the terminal gas supply pipeline) to ensure that the temperature does not fluctuate; the redundant backup is provided with a direct gas supply pipeline, which does not require heating or cooling, and avoids the situation where there is no gas in the factory. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] Figure 1 It is a schematic diagram of the structure of the utility model;
[0033] In the figure: 1, compressed air source; 2, cooling water source; 3, first constant temperature device; 31, air inlet pipe; 32, air pipe inspection valve; 33, air inlet temperature sensor; 34, air inlet pressure sensor; 35, air inlet valve; 36, bypass valve; 37, water inlet pipe; 38, water inlet temperature sensor; 39, water inlet inspection valve; 310, water inlet flow valve; 311, water inlet valve; 312, water inlet circulation valve; 313, cooler; 314, drain valve; 315, water outlet valve; 316, water outlet pipeline; 4, second constant temperature device; 5, direct supply pipeline; 6, air supply pipeline; 7, heating device; 71, first heating device; 8, air storage tank; 81, filtering device; 82, air storage pressure sensor; 83, air release pipeline; 84, air release valve; 85, muffler; 9, terminal air supply pipeline; 10, drain outlet. DETAILED DESCRIPTION
[0034] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.
[0035] Example
[0036] like Figure 1As shown, this embodiment provides a constant temperature gas supply system, including a compressed air source 1, a cooling water source 2, at least one first constant temperature device 3, at least one second constant temperature device 4, a direct supply pipeline 5 and a gas storage tank 8, wherein the compressed air source 1 and the cooling water source 2 are both connected to the first constant temperature device 3 and the second constant temperature device 4. In this embodiment, the first constant temperature device 3 and the second constant temperature device 4 have the same structure or the same function, and ultimately both realize gas supply to the gas storage tank 8 through the gas supply pipeline 6 and the heating device 7, and then the gas storage tank 8 supplies gas to the terminal gas supply pipeline 9;
[0037] Regarding the gas storage tank 8, it is connected with at least two filter devices 81, wherein the first thermostat 3 or the second thermostat 4 has a corresponding filter device 81; the gas storage tank 8 is also connected with a gas release pipeline 83, wherein the gas release pipeline 83 is also provided with a gas release valve 84 and a muffler 85. The gas inlet pipe 31 is provided with a gas pipe inspection valve 32. The water inlet pipe 37 is provided with a water inlet inspection valve 39. A gas storage pressure sensor 82 is provided between the terminal gas supply pipeline 9 and the gas storage tank 8.
[0038] Specifically, taking the first thermostat 3 as an example, it is obvious that the structure or function of the second thermostat 4 is the same or similar to that of the first thermostat 3 or has the same function, and the air supply pipeline 6 of the first thermostat 3 or the second thermostat 4 is connected to the heating device 7, wherein the air supply pipeline 6 of the first thermostat 3 is connected to the first heating device 71 of the heating device 7; the heating device 7 is connected to the air storage tank 8, wherein the air storage tank 8 is connected to the terminal air supply pipeline 9 through a pipeline, wherein, as a preferred embodiment, the terminal air supply pipeline 9 is also connected to the compressed air source 1 through the direct supply pipeline 5, when there is a problem with the first thermostat 3 or the second thermostat 4 or direct air supply is required, air can be directly supplied to the terminal air supply pipeline 9, which also provides redundant backup.
[0039] The first constant temperature device 3 includes an air intake pipe 31, a water intake pipe 37 and a cooler 313, wherein the compressed air source 1 is connected to the air supply pipeline 6 through the air intake pipe 31, and an air intake temperature sensor 33, an air intake pressure sensor 34 and an air intake valve 35 are sequentially arranged on the air intake pipe 31; the air intake valve 35 is connected to the cooler 313 through a pipeline, wherein the cooler 313 is connected to the air supply pipeline 6.
[0040] A bypass and a bypass valve 36 are further provided between the intake valve 35 and the intake pressure sensor 34 , wherein the bypass is connected to the air supply pipeline 6 .
[0041] In order to solve the deficiencies in the technology, the constant temperature system in this embodiment can be used in industrial production and other fields, such as the constant temperature (23°C) CDA (clean compressed air) self-adjusting and stabilizing system for OLED manufacturing, which can not only ensure that the compressed air is maintained within the required temperature range of production, but also ensure continuous operation during maintenance or failure, and the system reliability is high. By setting a gas storage tank at the air supply end and the compressed air pipe quality inspection, the pressure and temperature of the compressed air after constant temperature treatment are more stable, and continuous gas supply can be guaranteed when the gas source is insufficient; the product of this project can not only discharge the compressed air with unqualified temperature through the setting of bypass and exhaust pipe, avoiding pollution of the compressed air with qualified temperature in the gas tank, but also provide bypass when the compressed air does not need to be cooled, reducing resource waste while improving system stability; the product of this project adopts at least two sets of identical constant temperature devices, ensuring that at least one set of constant temperature devices continues to work, ensuring the continuity of gas supply, and not affecting production.
[0042] The cooling water source 2 is connected to the water outlet pipeline 316 through the water inlet pipe 37, wherein the water inlet pipe 37 is provided with a water inlet temperature sensor 38, a water inlet flow valve 310 and a water inlet valve 311 in sequence; the pipeline of the water inlet pipe 37 enters the cooler 313 after the water inlet valve 311, wherein the cooler 313 is connected to the water outlet pipeline 316, and the water outlet pipeline 316 is provided with a water outlet valve 315, and the water outlet pipeline 316 is connected to the drain outlet 10.
[0043] In this embodiment, each control valve and sensor is controlled by a self-regulating PLC, such as the air inlet valve 35, the water inlet valve 311, etc. are all solenoid valves controlled by the PLC, and the water inlet temperature sensor 38, the air inlet temperature sensor 33, the air inlet pressure sensor 34 and other sensors are all connected to the PLC. Preferably, in this embodiment, the water inlet valve 311 can be adjusted for a margin. The PLC adjusts the gas valve accordingly according to the information transmitted by the gas temperature sensor, and at the same time adjusts the control flow valve in combination with the water temperature sensor to control the water flow to adjust the temperature, and then adjusts the corresponding gas valve according to the gas temperature after the circulating water is adjusted. To obtain ideal clean compressed air (such as 23±1℃). It not only has a highly stable system, but also has a low cost, and can simply and effectively realize the constant temperature control of compressed air, meeting the accuracy requirements of the exposure machine for the environment and air inlet temperature during the OLED screen manufacturing process, but is also suitable for other places where compressed gas needs to be supplied at a constant temperature.
[0044] After the cooler 313 , it is connected to the drain port 10 through another pipeline, and a drain valve 314 is provided on the pipeline.
[0045] The utility model can improve the protection capability by supplying gas through two-way equipment (a first constant temperature device and a second constant temperature device) and a direct supply pipeline. In particular, both the two-way equipment have coolers, and system redundant switching can be realized. A specific typical implementation process is that after a hardware failure of one of the equipment, the PLC automatically switches to the second equipment for gas supply to ensure stable operation of the system. In other embodiments, more than two equipments can be set for gas supply; the cooler runs continuously, and cooling can be controlled more finely; redundant backup can avoid downtime, and the two identical branches after the gas tank (the first constant temperature device and the second constant temperature device) are both provided with filtering devices, and a failure of one of them will not affect the gas supply; there is a thermal insulation structure at the terminal (such as a thermal insulation layer made of thermal insulation cotton, etc. is provided on the terminal gas supply pipeline) to ensure that the temperature does not fluctuate; the redundant backup is provided with a direct gas supply pipeline, which does not require heating or cooling, and avoids the situation where there is no gas in the factory.
[0046] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of protection claimed by the utility model. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A constant temperature gas supply system, characterized in that: It comprises a compressed air source (1), a cooling water source (2), at least one first constant temperature device (3), at least one second constant temperature device (4), a direct supply pipeline (5) and an air storage tank (8), wherein: The compressed air source (1) and the cooling water source (2) are both connected to the first constant temperature device (3) and the second constant temperature device (4); The gas supply pipeline (6) of the first thermostatic device (3) or the second thermostatic device (4) is connected to the heating device (7), wherein: The gas supply pipeline (6) of the first constant temperature device (3) is connected to the first heating device (71) of the heating device (7); The heating device (7) is connected to the gas storage tank (8), wherein the gas storage tank (8) is connected to the terminal gas supply pipeline (9) through a pipeline, wherein: The terminal air supply pipeline (9) is also connected to the compressed air source (1) via a direct supply pipeline (5).
2. A constant temperature gas supply system according to claim 1, characterized in that: The first constant temperature device (3) comprises an air inlet pipe (31), a water inlet pipe (37) and a cooler (313), wherein: The compressed air source (1) is connected to the air supply pipeline (6) through the air intake pipe (31), and the air intake pipe (31) is provided with an air intake temperature sensor (33), an air intake pressure sensor (34) and an air intake valve (35) in sequence; The intake valve (35) is connected to the cooler (313) through a pipeline, wherein: The cooler (313) is connected to the air supply pipeline (6).
3. A constant temperature gas supply system according to claim 2, characterized in that: A bypass and a bypass valve (36) are also provided between the intake valve (35) and the intake pressure sensor (34), wherein: The bypass is connected to the air supply pipeline (6).
4. A constant temperature gas supply system according to claim 2, characterized in that: The cooling water source (2) is connected to the water outlet pipeline (316) through the water inlet pipe (37), wherein: The water inlet pipe (37) is provided with a water inlet temperature sensor (38), a water inlet flow valve (310) and a water inlet valve (311) in sequence; The water inlet pipe (37) enters the cooler (313) after the water inlet valve (311), wherein: The cooler (313) is connected to a water outlet pipeline (316), a water outlet valve (315) is provided on the water outlet pipeline (316), and the water outlet pipeline (316) is connected to a water outlet (10).
5. A constant temperature gas supply system according to claim 4, characterized in that: After the cooler (313), it is also connected to a drain outlet (10) through another pipeline, and a drain valve (314) is arranged on the pipeline.
6. A constant temperature gas supply system according to claim 1, characterized in that: The gas storage tank (8) is connected to at least two filtering devices (81), wherein: The first constant temperature device (3) or the second constant temperature device (4) has a corresponding filtering device (81); The gas storage tank (8) is also connected to a gas release pipeline (83), wherein: The air release pipeline (83) is also provided with an air release valve (84) and a muffler (85).
7. A constant temperature gas supply system according to claim 1, characterized in that: The first constant temperature device (3) and the second constant temperature device (4) have the same structure.
8. A constant temperature gas supply system according to claim 2, characterized in that: The air inlet pipe (31) is provided with an air pipe inspection valve (32).
9. A constant temperature gas supply system according to claim 4, characterized in that: The water inlet pipe (37) is provided with a water inlet inspection valve (39).
10. A constant temperature gas supply system according to claim 1, characterized in that: A gas storage pressure sensor (82) is provided between the terminal gas supply pipeline (9) and the gas storage tank (8).