CN217357591U - High-temperature water constant-pressure water replenishing device - Google Patents
High-temperature water constant-pressure water replenishing device Download PDFInfo
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- CN217357591U CN217357591U CN202220679825.0U CN202220679825U CN217357591U CN 217357591 U CN217357591 U CN 217357591U CN 202220679825 U CN202220679825 U CN 202220679825U CN 217357591 U CN217357591 U CN 217357591U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
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- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The utility model relates to the technical field of high-temperature water waste heat recovery, and discloses a high-temperature water constant-pressure water replenishing device, which comprises a water tank, wherein a high-temperature water outlet valve, a drain valve, a water level monitoring device and a pressure monitoring device are arranged on the water tank; the constant pressure tower is arranged above the water tank and is communicated with the water tank, and a water replenishing valve, an exhaust valve and a pressurizing valve connected with a steam pipeline are arranged on the constant pressure tower; the programmable control device, with water level monitoring device, pressure monitoring device, high temperature water outlet valve, drain valve, water replenishing valve, discharge valve and pressure valve for controlling the opening and closing of each valve, when the water level in the high temperature water constant pressure water replenishing device is lower, open the water replenishing valve to replenish water, when the water level in the high temperature water constant pressure water replenishing device is higher, open the drain valve to drain water, when the internal pressure in the high temperature water constant pressure water replenishing device is lower, open the pressure valve, when the internal pressure in the high temperature water constant pressure water replenishing device is higher, open the discharge valve, and make the high temperature water constant pressure water replenishing device stably operate in a preset pressure range and water level range.
Description
Technical Field
The utility model relates to a high temperature water waste heat recovery technical field, it is specific, relate to a high temperature water constant pressure moisturizing device.
Background
In a closed water circulation system, an expansion water tank, a constant pressure tank water replenishing device and the like are often used for balancing water quantity and pressure, frequent opening of a safety valve and frequent water replenishing of an automatic water replenishing valve are avoided, and the safety and the reliability of system operation are improved. In the production process of polycrystalline silicon, a cooling water cooling reduction furnace with high temperature (120-150 ℃) and high pressure is usually adopted. The generated high-temperature cooling water is subjected to waste heat recovery and is used for heat users in raw material purification procedures and the like, so that the heat recycling in a process system can be effectively realized, and the comprehensive energy consumption of process production is reduced. In order to ensure the stable operation of the high-temperature water circulating system, a constant-pressure water supplementing device is required to be arranged in the system to absorb the pressure fluctuation caused by expansion and contraction of water in the system, maintain the water pressure of the system and adjust the water quantity according to the process load, so that the high-temperature water circulating system can operate safely, reliably and efficiently.
The common constant-pressure water supplementing device is provided with an expansion water tank high-temperature water constant-pressure water supplementing device, a bag type constant-pressure tank high-temperature water constant-pressure water supplementing device and a variable-frequency speed-regulating constant-pressure water supplementing device. However, the temperature resistance is generally below 120 ℃ and the temperature of the medium used is generally below 90 ℃. And in the production process of polycrystalline silicon, the temperature of water in the high-temperature water circulating system is about 130 ℃, and the water in a high-temperature state causes equipment and pipelines in the system to operate in a high-pressure state for a long time, so that the traditional constant-pressure water replenishing device is not applicable. In addition, the traditional constant-pressure water replenishing device also has the defects of complex structure and high cost.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a solve above-mentioned technical problem and make, its purpose provides a high temperature water constant pressure moisturizing device, can be applicable to under the highly compressed operational environment of high temperature, realizes the function of constant pressure moisturizing simultaneously.
In order to achieve the above object, the utility model provides a high temperature water constant pressure moisturizing device, include: the water tank is provided with a high-temperature water outlet valve, a drain valve, a water level monitoring device and a pressure monitoring device; the constant pressure tower is arranged above the water tank and is communicated with the water tank, and a water supplementing valve, an exhaust valve and a pressure valve connected with a steam pipeline are arranged on the constant pressure tower; and the programmable control device, the water level monitoring device, the pressure monitoring device, the high-temperature water outlet valve, the drain valve, the water replenishing valve, the exhaust valve and the pressurizing valve are used for controlling the opening and closing of each valve.
Preferably, a spinning membrane pipe assembly connected with the pressurizing valve is arranged in the constant pressure tower, and the spinning membrane pipe assembly is positioned below the water replenishing valve.
Preferably, the water replenishing valve comprises a first water replenishing valve connected with the condensed water and a second water replenishing valve connected with the desalted water.
Preferably, a starting circulating valve located above the pressurization valve is further arranged on the constant pressure tower, the starting circulating valve is communicated with the high-temperature water outlet valve, and a circulating pump is arranged between the starting circulating valve and the high-temperature water outlet valve; a temperature monitoring device is arranged on the water tank; the starting circulating valve, the circulating pump and the temperature monitoring device are connected with the programmable control device.
Preferably, an emergency drain valve connected with the programmable controller is further arranged on the constant pressure tower.
Preferably, a safety valve is arranged on the constant pressure tower.
Preferably, a drain outlet is arranged at the bottom of the water tank.
Preferably, a manhole is provided at the bottom or side of the water tank.
Preferably, a standby port is further provided on the water tank.
According to above-mentioned description and practice can know, high temperature water level pressure moisturizing device set up the level pressure tower on can holding the water tank of high temperature water, be provided with the moisturizing valve on the level pressure tower, the loading valve, discharge valve, be equipped with high temperature water outlet valve on the water tank, the drain valve, water level monitoring device and pressure monitoring device, and control the opening and close of each valve through programmable logic controller, when its water level is lower, open the moisturizing valve and carry out the moisturizing, open the drain valve when its water level is higher and drain off, when its internal pressure is lower, open the loading valve, when its internal pressure is higher, open discharge valve, make this high temperature water level pressure moisturizing device can operate at predetermined pressure range and water level within range stability.
Drawings
Fig. 1 is a front view of a high-temperature water constant-pressure water replenishing device according to an embodiment of the present invention.
Fig. 2 is a side view of a high-temperature water constant-pressure water replenishing device according to an embodiment of the present invention.
The reference numbers in the figures are:
1. water tank 2, constant pressure tower 3, high temperature water outlet valve
4. Draw off valve 5, water level monitoring device 6, pressure monitoring device
7. Exhaust valve 8, pressure valve 9, spare port
10. First water replenishing valve 11, second water replenishing valve 12 and starting circulating valve
13. Temperature monitoring device 14, emergency drain valve 15, safety valve
16. Drain outlet 17, manhole
Detailed Description
Exemplary embodiments will now be described more fully with reference to the accompanying drawings. The exemplary embodiments, however, may be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. In the present disclosure, the terms "include", "arrange", "disposed" and "disposed" are used to mean open-ended inclusion, and mean that there may be additional elements/components/etc. in addition to the listed elements/components/etc.; the terms "first," "second," and the like are used merely as labels, and are not limiting as to the number or order of their objects; the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 and 2, the high-temperature water constant-pressure water replenishing device in this embodiment includes a water tank 1, a constant-pressure tower 2, and a programmable logic controller. Wherein the water tank 1 can be used for storing high-temperature water; the constant pressure tower 2 is used for adjusting the pressure in the high-temperature water constant pressure water supplementing device and assisting in controlling the water temperature of the high-temperature water; the programmable logic controller controls the opening and closing of each valve on the water tank 1 and the constant pressure tower 2 according to preset logic so as to control the pressure, water quantity and temperature in the high-temperature water constant-pressure water supplementing device.
Specifically, the water tank 1 is provided with a high-temperature water outlet valve 3, a drain valve 4, a water level monitoring device 5, and a pressure monitoring device 6. The high-temperature water outlet valve 3 and the drain valve 4 are electromagnetic valves or regulating valves, are connected with the programmable logic controller, and are controlled by the programmable logic controller in opening degree. One end of the high-temperature water outlet valve 3 is communicated with the water tank 1, and the other end is connected with other devices of the high-temperature water circulating system through pipelines and can provide high-temperature water for the high-temperature water outlet valve. The water level monitoring device 5 and the pressure monitoring device 6 are also connected with the programmable logic controller and are used for providing the water level and pressure information in the water supplementing device for the programmable logic controller to control other valves according to preset logic. The water tank 1 in this embodiment is made of a Q245R steel plate, and can withstand a high temperature of 300 ℃ or more and a high pressure of 0.5Mpa or more.
The constant pressure tower 2 is a hollow box body, the lower end of the constant pressure tower is communicated with the water tank 1, and an exhaust valve 7 and a pressure valve 8 are arranged on the constant pressure tower 2. The exhaust valve 7 and the pressure valve 8 are electromagnetic valves or regulating valves, are connected with the programmable logic controller, and the opening degree of the valves is controlled by the programmable logic controller. When the exhaust valve 7 is opened, the gas in the water replenishing device can be exhausted, and the internal pressure is further reduced. The pressure valve 8 is externally connected with a steam pipeline and used for injecting steam into the water supplementing device and improving the pressure in the high-temperature water constant-pressure water supplementing device.
In addition, in this embodiment, a water replenishing valve is further provided on the constant pressure tower 2 for replenishing water into the water replenishing device. Of course, in other embodiments, the water replenishing valve may be disposed on the water tank 1, or both the water tank 1 and the constant pressure tower 2, so that the water replenishing effect can be achieved.
The high-temperature water constant-pressure water supplementing device realizes the adjustment of pressure and water level through the programmable logic controller. The execution logic of the programmable logic controller is as follows:
when the water level monitoring device 5 monitors that the water level in the water tank 1 is higher than the first preset water level, the programmable logic controller opens the drain valve 4 to drain the water in the water tank 1, and the drain valve 4 is closed until the water level in the water tank 1 is lower than the second preset water level. The first preset water level and the second preset water level can be set according to actual requirements, wherein the second preset water level is lower than the first preset water level.
When the water level monitoring device 5 monitors that the water level in the water tank 1 is lower than the third preset water level, the programmable logic controller opens the water replenishing valve to replenish water into the water tank 1, and the water replenishing valve is closed until the water level in the water tank 1 is higher than the second preset water level. The third preset water level can be set according to actual requirements, wherein the first preset water level, the second preset water level and the third preset water level are reduced in sequence.
When the pressure monitoring device 6 monitors that the pressure in the water tank 1 is lower than the first threshold value, the programmable logic controller opens the pressurizing valve 8 to inject steam or gas into the water tank 1, so that the pressure in the water tank 1 is increased, and when the pressure in the water tank 1 reaches the second threshold value, the programmable logic controller closes the pressurizing valve 8 to stop injecting steam into the water tank 1.
When the pressure monitoring device 6 monitors that the pressure in the water tank 1 is higher than the third threshold value, the programmable logic controller opens the exhaust valve 7 to exhaust gas in the high-temperature water constant-pressure water supplementing device, so that the pressure in the water tank 1 is reduced, and when the pressure in the water tank 1 reaches the fourth threshold value, the programmable logic controller closes the exhaust valve 7 to stop exhausting gas. The first threshold, the second threshold, the third threshold and the fourth threshold can be set according to actual requirements, numerical values of the first threshold, the second threshold and the third threshold are sequentially increased, and numerical values of the fourth threshold are between the first threshold and the third threshold.
After acquiring the water level and the pressure in the high-temperature water constant-pressure water supplementing device, the programmable logic controller can regulate and control the water level and the pressure in the high-temperature water constant-pressure water supplementing device by opening or closing the pressurizing valve 8, the water supplementing valve, the exhaust valve 7 and the drain valve 4, so that the high-temperature water constant-pressure water supplementing device can work within a preset water level and pressure range, and the stability and the safety of the device are improved.
In this embodiment, the water replenishing valve is arranged on the constant pressure tower 2, and a spiral membrane tube assembly is arranged in the constant pressure tower 2, the spiral membrane tube assembly is connected with the pressurizing valve 8, and the water replenishing valve is arranged above the spiral membrane tube assembly. Water entering the constant pressure tower 2 and the water tank 1 through a water replenishing valve can be heated by high-temperature steam to remove oxygen when passing through the spiral membrane tube assembly.
In addition, in this embodiment, the water replenishment valve includes a first water replenishment valve 10 and a second water replenishment valve 11. Wherein, the first water replenishing valve 10 is connected with the condensed water and can replenish the condensed water into the constant pressure tower 2; the second water supply valve 11 is connected to high-temperature water or demineralized water, and can supply the high-temperature water or the demineralized water into the constant pressure tower 2. The first water replenishing valve 10 and the second water replenishing valve 11 are also controlled by the programmable logic controller, and when water needs to be replenished in the water tank 1, the first water replenishing valve 10 and/or the second water replenishing valve 11 can be opened to replenish water.
In addition, in this embodiment, a circulation start valve 12 is further provided on the fixed pressure tower 2, and the circulation start valve 12 is located above the pressurization valve 8. The starting circulating valve 12 is communicated with the high-temperature water outlet valve 3 through a pipeline, a circulating pump is arranged between the starting circulating valve 12 and the high-temperature water outlet valve 3, water flowing out of the high-temperature water outlet valve 3 can be conveyed to the starting circulating valve 12 through the circulating pump and then enters the constant-pressure tower 2, and water in the high-temperature water constant-pressure water supplementing device can flow circularly. Meanwhile, a temperature monitoring device 13 is further arranged on the water tank 1 and used for monitoring the temperature of the water in the water tank 1 in real time.
Wherein the starting circulation valve 12, the circulation pump and the temperature monitoring device 13 are connected with the programmable logic controller. Before the high-temperature water constant-pressure water replenishing device is formally operated, high-temperature water can be conveyed into other devices of the high-temperature water circulating system only by ensuring that the water temperature in the water tank 1 reaches a preset temperature. Therefore, when the high-temperature water constant-pressure water replenishing device is started, the programmable logic controller firstly learns the water temperature in the water tank 1 through the temperature monitoring device 13, if the water temperature is lower than the preset temperature, the starting circulating valve 12 and the circulating pump are opened, the water in the water tank 1 is conveyed into the constant-pressure tower 2, the water is heated to the preset temperature through the steam injected by the pressurizing valve 8, then the circulating valve 12 and the circulating pump are closed, and the water in the water tank 1 can be conveyed into other devices of the high-temperature water circulating system subsequently. It goes without saying that it is also necessary to ensure that the water level and the pressure in the water reservoir 1 are within preset ranges during this process.
It should be noted that, because the temperature monitoring device 13 is disposed on the water tank 1, when the high-temperature water constant-pressure water replenishing device operates, if the temperature of the water in the water tank 1 is lower than the preset temperature, the programmable logic controller can increase the opening degree of the pressure valve 8 to heat the water replenished into the water tank 1, but it is required to ensure that the pressure in the high-temperature water constant-pressure water replenishing device is maintained within the preset range, thereby ensuring that the device can operate safely.
In this embodiment, an emergency drain valve 14 connected to a programmable controller is also provided on the constant pressure column 2. When the water level in the high-temperature water constant-pressure water replenishing device is higher than a fourth preset water level, the programmable controller opens the emergency drain valve 14 for draining. The height of the fourth preset water level is not less than the height of the emergency drain valve 14.
In addition, in this embodiment, a safety valve 15 is provided in the constant pressure column 2. When the pressure in the high-temperature water constant-pressure water replenishing device is higher than a fifth threshold value, the safety valve is automatically opened, and gas in the constant-pressure tower is discharged, so that the pressure in the high-temperature water constant-pressure water replenishing device is reduced. Wherein the fifth threshold is greater than the third threshold.
In this embodiment, a drain outlet 16 is further disposed at the bottom of the water tank 1, so as to facilitate periodic disposal of impurities such as scale and dirt in the water tank 1. A manhole 17 is further arranged at the bottom or the side of the water tank 1, so that maintenance personnel can conveniently enter the water tank 1 for maintenance. The water tank 1 is further provided with a backup port 18 which can be used as a port for another water supply source, and water can be supplied into the water tank 1 through the backup port 18 when necessary.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. The utility model provides a high temperature water constant pressure moisturizing device which characterized in that includes:
the water tank is provided with a high-temperature water outlet valve, a drain valve, a water level monitoring device and a pressure monitoring device;
the constant pressure tower is arranged above the water tank and is communicated with the water tank, and a water supplementing valve, an exhaust valve and a pressure valve connected with a steam pipeline are arranged on the constant pressure tower;
and the programmable control device, the water level monitoring device, the pressure monitoring device, the high-temperature water outlet valve, the drain valve, the water replenishing valve, the exhaust valve and the pressurizing valve are used for controlling the opening and closing of each valve.
2. The constant-pressure water replenishing device for high-temperature water according to claim 1,
and a rotary membrane pipe assembly connected with the pressure valve is arranged in the constant pressure tower and is positioned below the water replenishing valve.
3. The constant-pressure water replenishing device for high-temperature water according to claim 2,
the water replenishing valve comprises a first water replenishing valve connected with the condensed water and a second water replenishing valve connected with the desalted water.
4. The constant-pressure water replenishing device for high-temperature water according to claim 1,
the constant pressure tower is also provided with a starting circulating valve positioned above the pressurization valve, the starting circulating valve is communicated with the high-temperature water outlet valve, and a circulating pump is arranged between the starting circulating valve and the high-temperature water outlet valve;
a temperature monitoring device is arranged on the water tank;
the starting circulating valve, the circulating pump and the temperature monitoring device are connected with the programmable control device.
5. The constant-pressure water replenishing device for high-temperature water according to claim 1,
and an emergency drain valve connected with the programmable controller is also arranged on the constant pressure tower.
6. The constant-pressure water replenishing device for high-temperature water according to claim 1,
and a safety valve is arranged on the constant pressure tower.
7. The constant-pressure water replenishing device for high-temperature water according to claim 1,
and a sewage discharge outlet is arranged at the bottom of the water tank.
8. The constant-pressure water replenishing device for high-temperature water according to claim 1,
and a manhole is arranged at the bottom or the side part of the water tank.
9. The constant-pressure water replenishing device for high-temperature water according to claim 1,
the water tank is also provided with a standby port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220679825.0U CN217357591U (en) | 2022-03-25 | 2022-03-25 | High-temperature water constant-pressure water replenishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220679825.0U CN217357591U (en) | 2022-03-25 | 2022-03-25 | High-temperature water constant-pressure water replenishing device |
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| Publication Number | Publication Date |
|---|---|
| CN217357591U true CN217357591U (en) | 2022-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220679825.0U Active CN217357591U (en) | 2022-03-25 | 2022-03-25 | High-temperature water constant-pressure water replenishing device |
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| CN (1) | CN217357591U (en) |
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2022
- 2022-03-25 CN CN202220679825.0U patent/CN217357591U/en active Active
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