Chemical reclaimed water preheating system
By adding a mixer to the chemical water ultrafiltration system and using a chemical preheating system with inclined steam nozzles, the problems of pipe vibration and noise caused by heating water at low temperatures in winter were solved, and stable control of the influent water temperature and guarantee of system efficiency were achieved.
Patent Information
- Application Number
- CN202422889212.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-11-26
AI Technical Summary
In low-temperature winter conditions, direct steam flow into the inlet pipe causes excessive pipe vibration and noise, affecting the normal operation of the boiler water treatment system.
A mixer is added to the chemical water ultrafiltration system. Steam is introduced into the mixer as a heat source to heat the water entering the inlet pipe. The steam nozzle is set at an angle to ensure that the steam and water are fully mixed, and steam is prevented from entering the inlet pipe directly. The flow area is increased to reduce the water flow velocity.
It achieves stable heating of the inlet water temperature within the range of 20-30℃, ensuring the efficiency of the ultrafiltration system, avoiding pipeline vibration and noise problems, and ensuring the normal operation of the system.
Smart Images
Figure CN223470182U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to chemical water system technical field, more specifically, relate to a chemical reclaimed water preheating system. BACKGROUND
[0002] At present, the water source for the boiler of the thermal power plant is the secondary sewage of the sewage treatment plant, and the water temperature is greatly affected by the environment. Generally, in summer, the water temperature can meet the water temperature requirement of the subsequent membrane treatment; in winter, due to the low external temperature, the water temperature cannot meet the water temperature requirement of the subsequent membrane treatment.
[0003] In order to ensure the normal operation of the water treatment equipment in winter, steam needs to be introduced into the low-temperature water in the inlet pipe before the water enters the ultrafiltration device, and the water is heated by the steam. However, if the steam is directly introduced into the inlet pipe, the steam will increase the vibration amplitude of the low-temperature water in the inlet pipe, and the noise will be obvious, which will even affect the normal use of the pipe. UTILITY MODEL CONTENT
[0004] The utility model discloses a chemical reclaimed water preheating system, which aims to heat the water by steam without affecting the normal use of the pipe.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme of providing a chemical reclaimed water preheating system, which comprises an inlet pipe, an air inlet pipe, a mixer and an outlet pipe. The flow area of the mixer is greater than that of the inlet pipe. The inlet end of the mixer is connected to the inlet pipe, the outlet end of the mixer is connected to the outlet pipe, the upper part of the mixer is provided with a steam nozzle, the input end of the steam nozzle penetrates the shell of the mixer and is connected to the air inlet pipe, and the output end of the steam nozzle is located in the mixer and is inclined towards the inlet end of the mixer.
[0006] As another embodiment of the present application, the steam nozzle is a conical structure, and the inner diameter of the steam nozzle gradually increases towards the output end.
[0007] As another embodiment of the present application, the steam nozzle is a conical structure, and the inner diameter of the steam nozzle gradually increases towards the output end.
[0008] As another embodiment of the present application, the steam nozzle is connected to the mixer at a distance greater than or equal to 300mm from the inlet end of the mixer.
[0009] As another embodiment of the present application, the steam nozzle is connected to the mixer at a distance greater than or equal to 300mm from the inlet end of the mixer.
[0010] As another embodiment of the present application, the output end of the steam nozzle has an output orifice plate, which is a hemispherical plate structure protruding outward, and the center of the output orifice plate is located above the centerline of the mixer; the output orifice plate is uniformly provided with a plurality of air permeable holes.
[0011] As another embodiment of the present application, the bottom plate of the mixer is provided with a spoiler extending upwardly and obliquely, and the spoiler is provided with a spoiler oblique surface near one side of the inlet end of the mixer, and the spoiler oblique surface is arranged at an acute angle with the water flow direction of the mixer.
[0012] As another embodiment of the present application, the cross section of the spoiler is a right-angled triangle; and the included angle between the oblique surface of the spoiler and the bottom plate of the mixer is 60°.
[0013] As another embodiment of the present application, the bottom plate of the mixer is provided with a downwardly recessed drain groove, and the drain groove is communicated with a drain pipe, and the drain pipe is provided with a drain adjusting valve; and the drain groove is located at the rear side of the spoiler.
[0014] As another embodiment of the present application, the air inlet pipe, the water inlet pipe and the water outlet pipe are all provided with temperature instruments and pressure instruments, and the air inlet pipe is provided with a steam adjusting valve.
[0015] The chemical reclaimed water preheating system has the advantages that, compared with the prior art, the chemical reclaimed water preheating system of the utility model, in the chemical water preparation ultrafiltration system, a pipeline mixer is additionally arranged at the reclaimed water inlet main pipe, steam is introduced into the pipeline mixer as a heat source to heat the water introduced into the pipeline mixer through the water inlet pipe, and the heated water is then delivered to the ultrafiltration system through the water outlet pipe for subsequent membrane reaction, so that the water temperature of the chemical water preparation ultrafiltration system is ensured to be within the design range of 20-30 DEG C, and the efficiency of the ultrafiltration system is ensured to be within the design value after use; in addition, the pipeline mixer increases the flow area, so that the water flow rate is reduced, and the steam nozzle is arranged obliquely to make the steam meet the water, so that the steam can be fully mixed with the water flow, and the problems of pipeline vibration and loud noise caused by directly introducing the steam into the water inlet pipe are avoided. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.
[0017] Fig. 1 The structure schematic diagram of the chemical reclaimed water preheating system provided by the embodiments of the utility model is shown in the figure.
[0018] Fig. 2 The structure schematic diagram of the mixer provided by the embodiment of the utility model;
[0019] Fig. 3 The structure schematic diagram of the output orifice plate provided by the embodiment of the utility model.
[0020] In the drawing: 1, water inlet pipe; 2, air inlet pipe; 3, main heating heat source; 4, standby heating heat source; 5, mixer; 6, water outlet pipe; 7, ultrafiltration system; 8, drain pipe; 9, drain tank; 10, spoiler; 11, steam jet; 12, extension pipe section; 13, output orifice plate; 14, air vent. DETAILED DESCRIPTION
[0021] In order to make the technical problems, technical schemes and beneficial effects to be solved by the utility model more clearly understood, the utility model will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and not to limit the utility model.
[0022] Please refer to Figs. 1 to 3 The chemical reclaimed water preheating system provided by the utility model will be described now. The chemical reclaimed water preheating system comprises a water inlet pipe 1, an air inlet pipe 2, a mixer 5 and a water outlet pipe 6. The flow area of the mixer 5 is larger than that of the water inlet pipe 1. The inlet end of the mixer 5 is connected to the water inlet pipe 1. The outlet end of the mixer 5 is connected to the water outlet pipe 6. The upper part of the mixer 5 is provided with a steam jet 11. The input end of the steam jet 11 penetrates through the shell of the mixer 5 and is connected to the air inlet pipe 2. The output end of the steam jet 11 is located in the mixer 5 and is inclinedly arranged towards the inlet end of the mixer 5.
[0023] Compared with the prior art, the chemical reclaimed water preheating system provided by the utility model adds a pipeline mixer 5 to the reclaimed water inlet main pipe in the chemical water ultrafiltration system 7. Steam is used as the heat source and is introduced into the mixer 5 to heat the water in the water inlet pipe 1 entering the mixer 5. The heated water is then delivered to the ultrafiltration system 7 through the water outlet pipe 6 for subsequent membrane reaction, so that the water temperature of the chemical water ultrafiltration system 7 is ensured to be within the design range of 20-30℃. The efficiency of the ultrafiltration system 7 after use is ensured to be within the design value. In addition, the mixer 5 increases the flow area, so that the water flow rate is reduced. The steam jet 11 is inclinedly arranged to make the steam meet the water, so that the steam can be fully mixed with the water flow. The problem of pipeline vibration and loud noise caused by directly introducing steam into the water inlet pipe 1 is avoided.
[0024] Optionally, the mixer 5 is a transverse tank structure, and the mixer 5 can adopt a tank structure of φ300mmx1000mmx5mm. The water inlet on the end plate of the mixer 5 is φ150mm, and the water outlet is φ150mm. Optionally, pipe joints can be added at the water inlet and the water outlet of the mixer 5.
[0025] In some possible embodiments, referring to Fig. 2 , the steam nozzle 11 is a conical structure, and the inner diameter of the steam nozzle 11 gradually increases towards the output end.
[0026] The input end of the steam nozzle 11 is connected with the top plate of the mixer 5, and the input end of the steam nozzle 11 has a coaxially arranged extension pipe section 12, which is located outside the mixer 5 and communicates with the air inlet pipe 2. The inner diameter of the steam nozzle 11 is a conical structure gradually increasing towards the output end, which is used for steam decompression diffusion. The conical slope of the steam nozzle 11 is 30°-60°. Optionally, the steam nozzle 11 is made of a 4mm thick stainless steel plate, the conical slope of the steam nozzle 11 is 45°, and the outer diameter of the output end of the steam nozzle 11 is 100mm.
[0027] The connection between the steam nozzle 11 and the mixer 5 is greater than or equal to 300mm from the inlet end of the mixer 5, and the output end of the steam nozzle 11 faces the inlet end of the mixer 5, so that the steam meets the water, and the steam can be fully mixed. Optionally, the center of the output end of the steam nozzle 11 is located about 50mm above the center line of the mixer 5, the central line of the steam nozzle 11 and the horizontal direction form an angle of 60°, and the lowest end of the steam nozzle 11 extends to the center line of the mixer 5.
[0028] In some possible embodiments, referring to Fig. 3 , the output end of the steam nozzle 11 has an output hole plate 13, which is a hemispherical plate structure protruding outward, and the center of the output hole plate 13 is located above the center line of the mixer 5. A plurality of air holes 14 are uniformly distributed on the output hole plate 13. Optionally, the outer diameter of the output hole plate 13 is 100mm, and the output hole plate 13 is also made of a 4mm thick stainless steel plate and is welded with the body of the steam nozzle 11. The air holes 14 on the output hole plate 13 are 10mm. The air holes 14 are annularly and uniformly distributed on the output hole plate 13.
[0029] In some possible embodiments, referring to Fig. 2 , the bottom plate of the mixer 5 has an upwardly inclined spoiler 10, and the side of the spoiler 10 close to the inlet end of the mixer 5 has a spoiler inclined surface, which is arranged at an acute angle with the water flow direction of the mixer 5.
[0030] The spoiler 10 is made of 4mm stainless steel plate, and is used to disturb the water in the lower part of the mixer 5 upwardly to mix with the steam fully.
[0031] Optionally, the spoiler 10 is a block made of stainless steel, and the cross section of the spoiler 10 is a right triangle; the included angle between the inclined surface of the spoiler 10 and the bottom plate of the mixer 5 is 60°.
[0032] In addition, a downwardly recessed drain groove 9 is arranged on the bottom plate of the mixer 5, and the drain groove 9 is communicated with a drain pipe 8, and the drain pipe 8 is provided with a drain adjusting valve; the drain groove 9 is located at the rear side of the spoiler 10. The drain groove 9 and the drain pipe 8 are used for pressure relief when the mixer 5 is over-pressured, so as to ensure the safe use of the mixer 5. The mixer 5 is provided with a high pressure limit alarm and a high-high limit opening pressure relief valve for pressure relief, and the pressure relief valve is closed when the pressure reaches a safety value.
[0033] Temperature and pressure instruments are arranged on the above-mentioned air inlet pipe 2, the water inlet pipe 1 and the water outlet pipe 6, and the air inlet pipe 2 is provided with a steam adjusting valve.
[0034] The low pressure steam after the high pressure steam trap is introduced into the mixer 5 as the main heating heat source 3 to heat the reclaimed water, and the self-use reduced pressure and temperature steam is introduced as the standby heating heat source 4. Remote temperature, pressure and flow instruments are additionally arranged on the air inlet pipe 2, the water inlet pipe 1 and the water outlet pipe 6. The remote instruments are connected to the DCS centralized control system for monitoring and automatic control by the operation personnel. The steam adjusting valve on the air inlet pipe 2 can realize continuous adjustment of the opening degree, and is used to adjust the heating steam flow to ensure that the water temperature at the outlet of the pipe mixer 5 newly added in the reclaimed water main pipe of the chemical water ultrafiltration system 7 is in the range of 20-30℃.
[0035] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims
1. A chemical water preheating system, characterized by, It comprises a water inlet pipe (1), an air inlet pipe (2), a mixer (5) and a water outlet pipe (6); the flow area of the mixer (5) is larger than that of the water inlet pipe (1), the inlet end of the mixer (5) is connected to the water inlet pipe (1), the outlet end of the mixer (5) is connected to the water outlet pipe (6), the upper part of the mixer (5) is provided with a steam nozzle (11), the input end of the steam nozzle (11) penetrates the shell of the mixer (5) and communicates with the air inlet pipe (2), and the output end of the steam nozzle (11) is located in the mixer (5) and is inclined towards the inlet end of the mixer (5).
2. The chemical water preheating system of claim 1, wherein, The steam nozzle (11) is a conical structure, and the inner diameter of the steam nozzle (11) gradually increases towards the output end.
3. The chemical water preheating system of claim 2, wherein, The conical slope of the steam nozzle (11) is 30°-60°.
4. The chemical water preheat system of claim 1, wherein, The distance from the connection between the steam nozzle (11) and the mixer (5) to the inlet end of the mixer (5) is greater than or equal to 300mm.
5. The chemical water preheating system of claim 1, wherein, The angle between the center line of the steam nozzle (11) and the horizontal direction is 60°, and the lowest end of the steam nozzle (11) extends to the center line of the mixer (5).
6. The chemical water preheat system of claim 1, wherein, The output end of the steam nozzle (11) has an output hole plate (13), which is a hemispherical plate structure protruding outward, and the center of the output hole plate (13) is located above the center line of the mixer (5); a plurality of air holes (14) are uniformly distributed on the output hole plate (13).
7. The chemical water preheat system of claim 1, wherein, The bottom plate of the mixer (5) has an upwardly inclined spoiler (10), and the side of the spoiler (10) close to the inlet end of the mixer (5) has a spoiler inclined surface, which is arranged at an acute angle with the water flow direction of the mixer (5).
8. The chemical water preheating system of claim 7, wherein, The cross section of the spoiler (10) is a right triangle; the angle between the inclined surface of the spoiler (10) and the bottom plate of the mixer (5) is 60°.
9. The chemical water preheating system of claim 7, wherein, The bottom plate of the mixer (5) is provided with a downwardly recessed drain groove (9), and the drain groove (9) is communicated with a drain pipe (8), and the drain pipe (8) is provided with a drain adjusting valve; the drain groove (9) is located at the rear side of the spoiler (10).
10. The chemical water preheat system of claim 1, wherein, The air inlet pipe (2), the water inlet pipe (1) and the water outlet pipe (6) are all provided with temperature instruments and pressure instruments, and the air inlet pipe (2) is provided with a steam adjusting valve.