Photocatalytic ultraviolet lamp temperature control device

Abstract

The invention relates to the technical field of water treatment, in particular to a photocatalytic ultraviolet lamp temperature control device for wastewater treatment. The photocatalytic ultraviolet lamp temperature control device comprises a power distribution control cabinet, an air heat exchanger, an air inlet hose, an air inlet sealing fixing piece, an air inlet porous air distribution head, an air inlet temperature probe, an ultraviolet lamp, a quartz sleeve, an air outlet temperature probe, an air outlet porous air distribution head and an air outlet sealing fixing piece. Air with different temperatures is introduced into the quartz sleeve space where the ultraviolet lamp is located, and the optimal operation environment temperature of the ultraviolet lamp in the sleeve is controlled, so that the ultraviolet lamp operates efficiently, the operation cost is greatly reduced, and the whole temperature control process is efficient, convenient and green.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment, in particular to a temperature control device of a photocatalytic ultraviolet lamp used for wastewater treatment. Background Art

[0002] As a kind of advanced oxidation technology for water treatment, photocatalytic oxidation technology is mainly used in the pretreatment and deep treatment sections of organic matter degradation in wastewater treatment. Due to its strong oxidation ability, no secondary pollution in the reaction process and green energy, photocatalytic oxidation technology is increasingly valued in water treatment applications. The core component of the photocatalytic reactor is the ultraviolet lamp. The efficiency of the ultraviolet lamp plays a decisive role in the overall efficiency of the reaction. Ultraviolet lamps mainly include low-pressure lamps and medium-pressure lamps. The ultraviolet conversion rate of low-pressure lamps is relatively high and the energy consumption is relatively low. At present, there is basically no temperature control device for the low-pressure ultraviolet lamps inside the photocatalytic reactor, which makes the operating environment temperature of the low-pressure ultraviolet lamp fluctuate greatly due to the influence of water temperature. However, the optimal ultraviolet output efficiency of the low-pressure ultraviolet lamp is affected by the ambient temperature. Too low or too high temperature will reduce the output power of the low-pressure ultraviolet lamp and affect its service life. Therefore, it is necessary to control the operating environment temperature of the low-pressure ultraviolet lamp to maintain a high output power and life of the low-pressure ultraviolet lamp, thereby improving the efficiency of the photocatalytic reaction. Summary of the invention

[0003] The purpose of the present invention is to provide a temperature control device for a photocatalytic ultraviolet lamp, which seals and fixes the ultraviolet lamp through a quartz sleeve and inlet and outlet air sealing fixings, controls the air temperature through an air heat exchanger, and passes air of different temperatures into the quartz sleeve space where the ultraviolet lamp is located according to the real-time temperature feedback from the inlet and outlet air temperature probes, thereby achieving control of the optimal operating environment temperature of the ultraviolet lamp in the sleeve, thereby enabling the ultraviolet lamp to operate efficiently.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A photocatalytic ultraviolet lamp temperature control device, comprising a power distribution control cabinet, an air heat exchanger, an air intake hose, an air intake sealing fixture, an air intake porous air cloth head, an air intake temperature probe, an ultraviolet lamp, a quartz sleeve, an air outlet temperature probe, an air outlet porous air cloth head, and an air outlet sealing fixture;

[0006] The ultraviolet lamp is in the middle of the quartz sleeve, the air inlet porous air cloth head and the air outlet porous air cloth head are inside the quartz sleeve and distributed on both sides of the ultraviolet lamp, and the air inlet temperature probe and the air outlet temperature probe are respectively fixed on the probe fixing holes of the air inlet porous air cloth head and the air outlet porous air cloth head;

[0007] The two ends of the quartz sleeve are respectively sealed and fixed to the air inlet sealing fixture and the air outlet sealing fixture through the sealed external threaded opening of the sealing joint, the sealing ring and the sealed internal threaded opening of the fixing joint, and the power control line of the outlet temperature probe, the inlet temperature probe and the ultraviolet lamp is connected through the wire sealing opening on the power distribution control cabinet;

[0008] The split air port of the air heat exchanger is connected to the air pipe sealing port of the air intake sealing fixing member through an air intake hose.

[0009] In a specific embodiment, the air heat exchanger consists of a stainless steel cavity, a Peltier cooler, a silicon carbide heating coil, an air intake fan and a diversion air port, wherein the stainless steel cavity is a circular tube, one end of which is the air intake end and the other end is the air outlet end, a plurality of diversion air ports are distributed at the air outlet end, and an air port valve is provided on the diversion air port, the air intake fan is fixed inside the stainless steel cavity, close to the air intake end, the silicon carbide heating coil is fixed inside the stainless steel cavity, the Peltier cooler is embedded in the stainless steel cavity, a circle of semiconductor cooling elements is arranged on the outer surface of the Peltier cooler, and a honeycomb copper tube is embedded inside the stainless steel cavity.

[0010] Compared with the prior art, the present invention has significant advantages as follows: the ambient temperature of the ultraviolet lamp can be quickly controlled by the silicon carbide heating coil and the Peltier cooler in the air heat exchanger, and the sealing of the ultraviolet lamp is guaranteed while controlling the operating temperature of the ultraviolet lamp. The sealing fixing part can ensure that the ultraviolet lamp can be used in complex wastewater, and the sealing part can withstand a large water pressure (0.5-0.8 MPa). One air heat exchanger can be connected to multiple ultraviolet lamps for use, and the entire temperature control process does not require the assistance of other materials. By monitoring the ambient temperature in the casing, the fan speed, the power of the Peltier cooler and the silicon carbide heating coil can be reasonably configured, which greatly reduces the operating cost. The entire temperature control process is efficient, convenient and green. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the ultraviolet lamp temperature control device of the present invention;

[0012] Figure 2 4 is a schematic structural diagram of an air inlet sealing fixture and an air outlet sealing fixture of an ultraviolet lamp temperature control device of the present invention;

[0013] Figure 3 It is a schematic structural diagram of a 5-inlet porous air cloth head and a 10-outlet porous air cloth head of the ultraviolet lamp temperature control device of the present invention;

[0014] Figure 4 It is a structural schematic diagram of a 2-air heat exchanger of the ultraviolet lamp temperature control device of the present invention.

[0015] Reference numerals

[0016] 1-power distribution control cabinet, 2-air heat exchanger, 3-air inlet hose, 4-air inlet sealing fixture, 5-air inlet porous cloth head, 6-air inlet temperature probe, 7-ultraviolet lamp, 8-quartz sleeve, 9-air outlet temperature probe, 10-air outlet porous cloth head, 11-air outlet sealing fixture, 12-sealing joint, 13-sealing ring, 14-fixed joint, 15-wire sealing port, 16-trachea sealing port, 17-sealed external threaded port, 18-sealed internal threaded port, 19-fixed external threaded port, 20-probe fixing hole, 21-vent, 22-fixed rubber sleeve, 23-stainless steel cavity, 24-Peltier cooler, 25-silicon carbide heating ring, 26-air inlet fan, 27-air inlet valve, 28-diversion air port. DETAILED DESCRIPTION

[0017] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0018] In the description of the present invention, it should be understood that the terms "center", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "counterclockwise", "clockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection, it can be a direct connection, it can be an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] like Figure 1As shown, a photocatalytic ultraviolet lamp temperature control device comprises: a power distribution control cabinet 1, the power distribution control cabinet 1 is connected to an air intake fan 26, a silicon carbide heating coil 25, a Peltier cooler 24, an air intake temperature probe 6, an air outlet temperature probe 9 and an ultraviolet lamp 7 through a power control line; an air heat exchanger 2, the air heat exchanger 2 is composed of a stainless steel cavity 23, a Peltier cooler 24, a silicon carbide heating coil 25, an air intake fan 26 and a diversion air port 28, wherein the stainless steel cavity 23 is a circular tube, a One end is the air inlet end and the other end is the air outlet end. A plurality of branch air ports 28 are distributed at the air outlet end. An air port valve 27 is provided on the branch air port 28. An air intake fan 26 is fixed inside the stainless steel cavity 23, close to the air inlet end. A silicon carbide heating ring 25 is fixed inside the stainless steel cavity 23. A Peltier cooler 24 is embedded in the stainless steel cavity 23. A semiconductor cooling element is formed on the outer surface of the Peltier cooler 24, and a honeycomb copper tube is embedded inside the stainless steel cavity 23.

[0021] The ultraviolet lamp 7 is in the middle position inside the quartz sleeve 8, 5 air inlet porous air distribution heads and 10 air outlet porous air distribution heads are inside the quartz sleeve, distributed on both sides of the ultraviolet lamp 7, 6 air inlet temperature probes and 9 air outlet temperature probes are respectively fixed on the probe fixing holes 20 of 5 air inlet porous air distribution heads and 10 air outlet porous air distribution heads; the two ends of the quartz sleeve 8 are respectively sealed and fixed to the air inlet sealing fixture 4 and the air outlet sealing fixture 11 through the sealed external threaded opening 17 of the sealing joint 12, the sealing ring 13 and the sealed internal threaded opening 18 of the fixed joint 14, and the power control line of the thermometer probe and the ultraviolet lamp 7 is connected through the wire sealing opening 15; the diversion air port 28 of the air heat exchanger 2 is connected to the air pipe sealing opening 16 of the air inlet sealing fixture 4 through the air inlet hose 3; the fixed external threaded opening of the fixed joint 14 can be fixed to the corresponding photocatalytic device.

[0022] Example 1

[0023] On the basis of the above, a photocatalytic ultraviolet lamp temperature control device, when the ambient temperature is 50°C and the temperature inside the sleeve needs to be controlled at 30-35°C, includes the following steps:

[0024] Turn on the UV lamp 7 through the power distribution control cabinet 1, turn on the air intake fan 26 and set the fan speed to 200 rpm, open the air inlet valve 27, wait for the system to run for 5 minutes, and according to the temperature feedback of the air intake temperature probe 6 and the air outlet temperature probe 9, turn on the Peltier cooler 24 and set the power to 20%. If the temperature of the air intake temperature probe 6 is 30°C and the temperature of the air outlet temperature probe 9 is 37°C, adjust the power of the Peltier cooler 24 to 30% through the power distribution control cabinet 1 to increase the cooling power, and adjust the speed of the air intake fan 26 to 220 rpm to stabilize the cooling effect. After 3 minutes of stabilization, the power of the Peltier cooler 24 and the speed of the intake fan 26 are adjusted according to the temperature feedback of the intake temperature probe 6 and the outlet temperature probe 9. During the adjustment process, when the temperature difference between the intake temperature probe 6 and the outlet temperature probe 9 is between 10 and 15°C, the speed of the intake fan 26 is adjusted first. When the temperature difference between the intake temperature probe 6 and the outlet temperature probe 9 is greater than 15°C or less than 10°C, the power of the Peltier cooler 24 is adjusted first. When the temperature of the outlet temperature probe 9 is between 30 and 35°C, the power of the Peltier cooler 24 and the speed of the fan 26 are stabilized.

[0025] Example 2

[0026] Based on Example 1, a photocatalytic ultraviolet lamp temperature control device includes the following steps when the temperature in the sleeve needs to be controlled at 30-35°C at an ambient temperature of 10°C:

[0027] Turn on the UV lamp 7 through the power distribution control cabinet 1, turn on the air intake fan 26 and set the fan speed to 200 rpm, open the air inlet valve 27, wait for the system to run for 5 minutes, and according to the temperature feedback of the air intake temperature probe 6 and the air outlet temperature probe 9, turn on the silicon carbide heating ring 25 and set the power to 20%. If the temperature of the air intake temperature probe 6 is 20°C, and the temperature of the air outlet temperature probe 9 is 15°C, adjust the power of the silicon carbide heating ring 25 to 30% through the power distribution control cabinet 1 to increase the heating power, and at the same time adjust the speed of the air intake fan 26 to 220 rpm to stabilize. After 3 minutes, the power of the silicon carbide heating coil 25 and the speed of the intake fan 26 are adjusted according to the temperature feedback from the intake temperature probe 6 and the outlet temperature probe 9. During the adjustment process, when the temperature difference between the intake temperature probe 6 and the outlet temperature probe 9 is between 15 and 20°C, the speed of the intake fan 26 is adjusted first. When the temperature difference between the intake temperature probe 6 and the outlet temperature probe 9 is greater than 20°C or less than 15°C, the power of the silicon carbide heating coil 25 is adjusted first. When the temperature of the outlet temperature probe 9 is between 30 and 35°C, the power of the silicon carbide heating coil 25 and the speed of the fan 26 are stabilized.

[0028] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A photocatalytic ultraviolet lamp temperature control device, comprising: Power distribution control cabinet, air heat exchanger, air inlet hose, air inlet sealing fixture, air inlet porous cloth head, air inlet temperature probe, UV lamp, quartz sleeve, air outlet temperature probe, air outlet porous cloth head, air outlet sealing fixture; The ultraviolet lamp is in the middle of the quartz sleeve, the air inlet porous air cloth head and the air outlet porous air cloth head are inside the quartz sleeve and distributed on both sides of the ultraviolet lamp, and the air inlet temperature probe and the air outlet temperature probe are respectively fixed on the probe fixing holes of the air inlet porous air cloth head and the air outlet porous air cloth head; The two ends of the quartz sleeve are respectively sealed and fixed to the air inlet sealing fixture and the air outlet sealing fixture through the sealed external threaded opening of the sealing joint, the sealing ring and the sealed internal threaded opening of the fixing joint, and the power control line of the outlet temperature probe, the inlet temperature probe and the ultraviolet lamp is connected through the wire sealing opening on the power distribution control cabinet; The split air port of the air heat exchanger is connected to the air pipe sealing port of the air intake sealing fixing member through an air intake hose.

2. A photocatalytic ultraviolet lamp temperature control device according to claim 1, characterized in that: The air heat exchanger consists of a stainless steel cavity, a Peltier cooler, a silicon carbide heating coil, an air intake fan and a diversion air port. The stainless steel cavity is a circular tube with an air intake end at one end and an air outlet at the other end. There are multiple diversion air ports distributed on the air outlet end, and air port valves are provided on the diversion air ports. The air intake fan is fixed inside the stainless steel cavity, close to the air intake end. The silicon carbide heating coil is fixed inside the stainless steel cavity. The Peltier cooler is embedded in the stainless steel cavity. The outer surface of the Peltier cooler is a semiconductor cooling element, and the honeycomb copper tube is embedded inside the stainless steel cavity.

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