An anti-freezing device for a carburetor

Abstract

The present application relates to an anti-freezing device for a vaporizer, which includes a water tank and a frame. A heat exchange box is installed on the frame, and an intake pipe and an outlet pipe are installed on the heat exchange box. The intake pipe is used to receive steam from a thermal power plant, and the outlet pipe is used to supply steam to a printing and dyeing factory. The heat exchange box is connected to the water tank through a water inlet pipe. A first water pump is installed on the heat exchange box to pump the water in the heat exchange box and spray water on the vaporizer through the outlet pipe. The water tank is used to recover the water sprayed out by the outlet pipe, and a second water pump is provided in the water tank and connected to the water inlet pipe. In the present application, the high-temperature steam generated by the thermal power plant is sent into the heat exchange box through the intake pipe for heat exchange with the water sprayed out by the water inlet pipe. The steam after cooling and pressure reduction is transported to the printing and dyeing factory through the outlet pipe for use. The water heated by the high-temperature steam is pumped by the first water pump to the outlet pipe to spray water on the vaporizer for heating and deicing, so that the vaporizer is not prone to icing when vaporizing liquid nitrogen.

Description

Technical Field

[0001] This application relates to the field of vaporizers, and in particular to an anti-freezing device for a vaporizer. Background Art

[0002] In a thermal power plant, nitrogen is required to displace the gas inside the generator set. However, when nitrogen is transported, it is usually compressed into a liquid state for transportation. Therefore, when in use, a vaporizer is needed to vaporize the liquid nitrogen. When the liquid nitrogen vaporizes, it absorbs a large amount of heat, causing the moisture in the air around the vaporizer to freeze into ice and solidify on the pipes of the vaporizer, thereby reducing the liquefaction effect and efficiency of the vaporizer for liquid nitrogen. Summary of the Invention

[0003] In order to solve the problem that the moisture in the air freezes on the vaporizer when the vaporizer vaporizes liquid nitrogen, resulting in a reduction in the vaporization efficiency of the vaporizer, this application provides an anti-freezing device for a vaporizer.

[0004] An anti-freezing device for a vaporizer provided by this application adopts the following technical solution:

[0005] An anti-freezing device for a vaporizer includes a water tank and a frame. A heat exchange box is installed on the frame. An intake pipe and an outlet pipe are installed on the side wall of the heat exchange box. The intake pipe is connected to the steam discharge point in the thermal power plant, and the outlet pipe is used to supply steam to a printing and dyeing factory. A water inlet pipe is installed on the top wall of the heat exchange box, and the water inlet pipe is connected to the water tank. A first water pump is installed on the heat exchange box. The first water pump is used to pump the water in the heat exchange box. The outlet end of the first water pump is provided with an outlet pipe, and the outlet pipe is used to extend to the vaporizer to spray water on the vaporizer. The water tank is used to recycle the water sprayed out by the outlet pipe. The water tank is provided with a second water pump, and the second water pump is connected to the water inlet pipe.

[0006] By adopting the above technical solution, the high-temperature and high-pressure steam generated during the daily operation of the thermal power plant is sent into the heat exchange box through the intake pipe to exchange heat with the water sprayed into the heat exchange box through the water inlet pipe. The steam after cooling and pressure reduction is transported to the printing and dyeing factory through the outlet pipe for use. The water heated by the high-temperature steam is pumped by the first water pump to the outlet pipe to spray water on the vaporizer for heating and de-icing, so that it is not easy for the vaporizer to freeze when vaporizing liquid nitrogen;

[0007] Compared with directly flushing the vaporizer with water to defrost it, the effect of defrosting with water after steam heating is better. And compared with the conventional method of directly sending high-temperature steam into a large space for cooling and pressure reduction, using water to cool and reduce the pressure of the steam, and the water after absorbing heat is used to defrost the vaporizer. Part of the heat released from the high-temperature steam is reused for defrosting the vaporizer, with a higher heat utilization rate. At the same time, using water at a higher temperature to cool and reduce the pressure of the high-temperature steam has a faster speed.

[0008] Optionally, one end of the intake pipe connected to the heat exchange box extends into the intake end of the outlet pipe. There is a gap between the intake pipe and the outlet pipe. An installation pipe is arranged in the heat exchange box. The installation pipe is connected to the water inlet pipe. The installation pipe is parallel to the intake pipe. A number of water outlets are spaced along the length direction of the installation pipe. A hygrometer is arranged on the outlet pipe. An adjusting mechanism is arranged on the outlet pipe for adjusting the total area of the gap between the intake pipe and the outlet pipe.

[0009] By adopting the above technical solution, since the steam pressure output by the thermal power plant is relatively high, after cooling and pressure reduction by the large-diameter outlet pipe, it may still exceed the upper limit of the steam pressure required by the printing and dyeing factory. At this time, the adjusting mechanism is used to adjust the gap area between the intake pipe and the outlet pipe to relieve the pressure inside the outlet pipe. And the discharged high-temperature steam will further heat the water in the heat exchange box, further increasing the temperature of the water sprayed on the vaporizer.

[0010] Optionally, the adjusting mechanism includes a fixing ring installed in the outlet pipe. One end of the intake pipe coaxially passes through the fixing ring. A number of air holes are circumferentially spaced on one end face of the fixing ring around the axis of the fixing ring. A blocking ring is also coaxially and rotatably installed on the fixing ring. The blocking ring is used to adjust the opening area of the air holes. A driving mechanism is also arranged on the outlet pipe for driving the blocking ring to rotate.

[0011] By adopting the above technical solution, the fixing ring is used to fix the intake pipe. After rotating the blocking ring, the opening area of the air holes on the fixing ring can be adjusted. And since the adjustment is carried out by rotating the blocking ring, the pressure of the high-pressure steam inside the outlet pipe is not likely to interfere with the adjustment function of the blocking ring.

[0012] Optionally, a mounting bracket is provided on one side of the frame. The mounting bracket is used to support the air outlet pipe. The driving mechanism includes two positioning rods threadedly mounted on the mounting bracket. One end of the positioning rod hermetically slides through the air outlet pipe and is located inside the air outlet pipe. The end face of the positioning rod located at one end inside the air outlet pipe is conical. A conical positioning hole that is in interference fit with the conical end of the positioning rod is provided on the side wall of the retaining ring. The positioning hole is opened along the radial direction of the retaining ring. Rotating the positioning rod can fit the conical end of the positioning rod into the corresponding positioning hole. When the conical end of one positioning rod is fitted into the corresponding positioning hole, the retaining ring closes all the air holes, and only the side wall of the tip of the conical end of the other positioning rod abuts against the side wall at the orifice of the positioning hole.

[0013] By adopting the above technical solution, rotating the two positioning rods in reverse synchronization can drive the retaining ring to rotate through the cooperation between the conical end of the positioning rod and the conical positioning hole. Also, since the positioning rods are threadedly mounted on the air outlet pipe, the two positioning rods can fix the retaining ring. Moreover, due to the linear cooperation between the conical surface of the positioning rod and the side wall of the positioning hole, the percentage of the air holes blocked by the retaining ring can be adjusted to any size, with a large adjustment range and convenient adjustment.

[0014] Optionally, an adjusting shaft is rotatably mounted on the mounting bracket. A connecting shaft is rotatably mounted on the mounting bracket at both ends of the adjusting shaft. One end of the connecting shaft is connected to the adjusting shaft through bevel gears. The other end of the connecting shaft is connected to the positioning rod through bevel gears. The two ends of the adjusting shaft are respectively drivingly connected to the two positioning rods through the two connecting shafts. The positioning rod is circumferentially fixed and axially slidable with respect to the bevel gear.

[0015] By adopting the above technical solution, rotating the handwheel drives the connecting shaft to rotate. The connecting shaft drives the two positioning rods to rotate synchronously through bevel gears. Since the thread directions of the two positioning rods are opposite, the two positioning rods rotate in reverse synchronization, and then drive the retaining ring to rotate through the two positioning rods rotating in reverse synchronization. And when rotating, only by rotating the connecting shaft can the two positioning rods be driven to rotate, which is convenient during rotation.

[0016] Optionally, a detection tube is installed on the side wall of the air outlet pipe. An installation box is arranged on the installation frame. A partition is arranged in the installation box. The partition divides the interior of the installation box into a pressure chamber and an adjustment chamber. One end of the detection tube away from the air outlet pipe is connected to the installation box and communicated with the pressure chamber. An adjustment rod is slidably installed in the adjustment chamber. One end of the adjustment rod hermetically slides through the partition and is located in the pressure chamber. A spring is arranged in the adjustment chamber. Two ends of the spring are respectively connected to the inner wall of the adjustment chamber and one end of the adjustment rod away from the partition. The telescopic direction of the spring is parallel to the sliding direction of the adjustment rod. The spring is used to support the adjustment rod. A bevel gear meshing with the bevel gear on the positioning rod is rotatably installed on the installation box. An adjustment gear is rotatably installed in the adjustment chamber. Teeth are arranged on the adjustment rod along its length direction. The teeth are meshed with the adjustment gear. The adjustment gear is coaxially connected with the bevel gear on the installation box.

[0017] By adopting the above technical solution, since the pressure chamber is communicated with the inside of the air outlet pipe through the detection tube, the air pressure inside the pressure chamber is the same as the air pressure inside the air outlet pipe. When the steam pressure inside the air outlet pipe is too high, it will synchronously drive the air pressure inside the pressure chamber to increase, and then push the adjustment rod to slide in the direction away from the pressure chamber. The sliding adjustment rod drives the adjustment gear to rotate. The adjustment gear drives the positioning rod to rotate through the cooperation between the two bevel gears. The two positioning rods rotate synchronously and reversely through the cooperation between the adjustment shaft, the connecting shaft and the bevel gears to drive the retaining ring to rotate and adjust the opening degree of the air holes on the fixed ring. The high-pressure steam in the air outlet pipe will be discharged from the air holes on the fixed ring into the heat exchange box for pressure reduction. When the pressure drops below the safety line, the spring pushes the adjustment rod to rotate, and reversely repeats the above process to close the air holes on the fixed ring. Through the above design, the air outlet pipe is not easily exploded due to the too high steam pressure inside it.

[0018] Optionally, a thermometer is arranged in the air outlet pipe. Two baffle plates are rotatably installed in the heat exchange box. The baffle plates are located directly above the air inlet pipe. The installation pipe is located directly above the baffle plates. The two baffle plates can be rotated to be joined together to block the upper part of the air inlet pipe. A plurality of drain holes are penetrated through the baffle plates. The projection of the drain holes on the bottom wall of the heat exchange box is located outside the projection range of the air inlet pipe on the bottom wall of the heat exchange box. A driving member for driving the baffle plates to rotate is arranged on the heat exchange box.

[0019] By adopting the above technical solution, rotating the two baffle plates to block the upper part of the air inlet pipe, and then the amount of water discharged onto the air inlet pipe can be adjusted by the opening and closing degree of the two baffle plates, so as to adjust the cooling degree of the steam in the air inlet pipe.

[0020] Optionally, the driving member includes two driving gears rotatably mounted on the side wall of the heat exchange box. The two driving gears mesh with each other and are coaxially connected to two baffles respectively. A slider is also slidably mounted on the side wall of the heat exchange box. A plurality of teeth engaging with the driving gears are provided on the slider. The teeth engage with any one of the driving gears. A lead screw is rotatably mounted on the heat exchange box. The axis of the lead screw is parallel to the sliding direction of the slider. The lead screw passes through the slider and is in threaded cooperation with the slider.

[0021] By adopting the above technical solution, rotating the lead screw drives the slider to slide. The slider drives the driving gear meshing with it to rotate through the teeth. The rotating driving gear drives the other driving gear to rotate. Then, the two driving gears drive the two baffles to rotate, and the rotation of the two baffles is relatively convenient.

[0022] Optionally, the frame is in a cage shape to surround the heat exchange box, and the frame is located on one side of the vaporizer.

[0023] By adopting the above technical solution, since the air at the frame is relatively hot, the hot air at the frame will rise, forming a negative pressure at the frame. The air around the frame will flow towards the frame under the action of atmospheric pressure. Also, since the frame is located on one side of the vaporizer, the cold air sinking at the vaporizer will flow towards the frame, thereby promoting the flow rate of the air at the vaporizer, enhancing the vaporization effect of the vaporizer, and the airflow with a higher flow rate will also make it more difficult for ice to form on the vaporizer.

[0024] Optionally, the water outlet pipe extends above the vaporizer, and a plurality of spray heads are installed on the lower side of the water outlet pipe located above the vaporizer. The spray heads spray water towards the vaporizer.

[0025] By adopting the above technical solution, spraying water on the vaporizer from top to bottom, the water flow covers the vaporizer more comprehensively, further improving the anti-icing effect of the water flow.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. During the daily operation of the thermal power plant, the high-temperature and high-pressure steam generated is sent into the heat exchange box through the inlet pipe to exchange heat with the water sprayed from the inlet pipe into the heat exchange box. The steam after cooling and pressure reduction is transported to the printing and dyeing factory through the outlet pipe for use. The water heated by the high-temperature steam is pumped by the first water pump to the outlet pipe to spray water on the vaporizer for heating and deicing, so that when the vaporizer vaporizes liquid nitrogen, it is not easy to freeze on the vaporizer. Compared with directly flushing water on the vaporizer for deicing, the water after being heated by steam has a better deicing effect. And compared with the conventional method of directly sending high-temperature steam into a large space for cooling and pressure reduction, using water to cool and reduce the pressure of the steam, and the water after absorbing heat is used to deice the vaporizer. Part of the heat released from the high-temperature steam is reused for deicing the vaporizer, and the utilization rate of heat is relatively high. At the same time, using water to cool and reduce the pressure of the high-temperature steam is relatively fast;

[0028] 2. Since the pressure chamber is internally connected to the outlet pipe through the detection pipe, the air pressure inside the pressure chamber is the same as the air pressure inside the outlet pipe. When the steam pressure inside the outlet pipe is too high, it will synchronously drive the increase of the air pressure inside the pressure chamber, and then push the adjusting rod to slide in the direction away from the pressure chamber. The sliding adjusting rod drives the adjusting gear to rotate. The adjusting gear drives the positioning rod to rotate through the cooperation between two bevel gears. The two positioning rods rotate synchronously and reversely through the cooperation of the adjusting shaft, connecting shaft and bevel gears to drive the retaining ring to rotate and adjust the opening degree of the air holes on the fixed ring. The high-pressure steam in the outlet pipe will be discharged from the air holes on the fixed ring into the heat exchange box for pressure reduction. When the pressure drops below the safety line, the spring pushes the adjusting rod to rotate, and reversely repeats the above process to close the air holes on the fixed ring. Through the above design, it is not easy for the outlet pipe to explode due to too high steam pressure inside it;

[0029] 3. The frame is arranged on one side of the vaporizer. Since the air temperature at the frame is relatively high, and the air temperature at the vaporizer is relatively low due to vaporizing liquid nitrogen, the hot and cold air between the two will have convection, strengthening the air flow at the vaporizer, and thus strengthening the vaporization effect of the vaporizer. And the air heated by the heat exchange box flows to the vaporizer to blow hot air on the vaporizer, further improving the utilization rate of the steam heat in the inlet pipe, and further reducing the probability of the vaporizer freezing. Description of the Drawings

[0030] Figure 1 It is a three-dimensional structural schematic diagram in the direction of the inlet pipe of this application.

[0031] Figure 2 It is a three-dimensional structural schematic diagram of this application. In the figure, the heat exchange box is cut open, and the vaporizer and the water tank are omitted in the figure.

[0032] Figure 3It is a schematic three-dimensional structure diagram of the present application. In the figure, the mounting frame and the air outlet pipe are sectioned, the vaporizer and the water tank are omitted, the air holes of the fixing ring in the figure are blocked and not shown, and only six air holes on the retaining ring are drawn for illustration purposes.

[0033] Figure 4 is Figure 3 an enlarged schematic view of part A in

[0034] Figure 5 It is a schematic three-dimensional structure diagram at the installation box of the present application. In the figure, the installation box is sectioned.

[0035] Reference numerals: 1, water tank; 2, frame; 21, water inlet pipe; 22, water outlet pipe; 221, spray head; 3, heat exchange box; 31, first water pump; 32, second water pump; 33, installation pipe; 331, water outlet; 34, baffle; 341, drain outlet; 4, air inlet pipe; 5, air outlet pipe; 53, thermometer; 6, adjustment mechanism; 61, fixing ring; 611, air hole; 62, retaining ring; 621, positioning hole; 7, positioning rod; 8, mounting frame; 81, adjustment shaft; 82, connecting shaft; 83, bevel gear; 9, driving member; 91, driving gear; 92, slider; 921, engaging tooth; 93, lead screw; 10, installation box; 101, partition board; 102, adjustment rod; 103, adjustment gear; 104, guide rail; 105, spring; 106, installation shaft; 107, pressure chamber; 108, adjustment chamber; 109, detection pipe. Detailed implementation manners

[0036] The following will Figures 1 - 5 further elaborate on the present application in detail.

[0037] The embodiment of the present application discloses an anti-freezing device for a vaporizer. Referring to Figure 1 , it includes a frame 2 fixedly installed on one side of the vaporizer. The frame 2 is in a cage shape. A cuboid-shaped heat exchange box 3 is fixedly installed at the center of the frame 2. An air inlet pipe 4 and an air outlet pipe 5 are respectively fixedly installed on the opposite side walls of the heat exchange box 3. The air inlet pipe 4 is connected to the steam discharge port of the thermal power plant, and the air outlet pipe 5 is connected to the steam supply port of the printing and dyeing factory to supply steam to the printing and dyeing factory. Due to the high-temperature steam, the air temperature at the frame is relatively high. The negative pressure formed after the hot air rises will drive the air at the vaporizer to flow faster, providing preliminary anti-icing for the vaporizer.

[0038] Referring to Figure 1 and Figure 2A water pool 1 is provided on the ground below the vaporizer, and the vaporizer is located directly above the water pool 1. A water inlet pipe 21 and a water outlet pipe 22 are fixedly installed on the frame 2, and one end of the water inlet pipe 21 is fixedly connected to the top wall of the heat exchange box 3 and extends into the heat exchange box 3. A horizontal mounting pipe 33 is fixedly installed on one end of the water inlet pipe 21 located inside the heat exchange box 3, and the mounting pipe 33 is connected to the water inlet pipe 21. The length direction of the mounting pipe 33 is arranged along the length direction of the steam pipe, and a plurality of water outlets 331 are spaced along the length direction on the side walls of the mounting pipe 33 on opposite sides of the length direction.

[0039] Reference Figure 1 and Figure 2 The diameter of the outlet pipe 5 is larger than that of the inlet pipe 4. One end of the inlet pipe 4 is coaxially inserted into the outlet pipe 5. A second water pump 32 is fixedly installed in the water pool 1. The water outlet end of the second water pump 32 is fixedly connected to the water inlet pipe 21. The water in the water pool 1 is pumped into the water inlet pipe 21 by the second water pump 32, and then transported along the water inlet pipe 21 to the installation pipe 33 and sprayed out from the water outlet 331 to spray water to cool the inlet pipe 4. The high-temperature steam in the inlet pipe 4 is cooled and reduced in pressure by water and then transported from the outlet pipe 5 to the printing and dyeing factory for use.

[0040] Reference Figure 1 A first water pump 31 is fixedly installed on the bottom wall of the heat exchange box 3. The first water pump 31 is communicated with the inner cavity of the heat exchange box 3. The water outlet 331 of the first water pump 31 is fixedly connected to the water outlet pipe 22. One end of the water outlet pipe 22 extends to the top of the vaporizer and is fixedly installed on the ceiling for shielding the vaporizer. The end of the water outlet pipe 22 located above the vaporizer is rectangular and fixedly installed with a plurality of nozzles 221 spraying toward the vaporizer. The first water pump 31 transports the hot water in the heat exchange box 3 to the end of the water outlet pipe 22 located above the vaporizer, and then sprays it from the nozzle 221 to rinse the vaporizer. The flow of hot water makes it difficult for the surface of the vaporizer to freeze.

[0041] Reference Figure 3 and Figure 4 The outlet pipe 5 is provided with an adjustment mechanism 6, which includes a fixed ring 61 coaxially fixedly installed in the outlet pipe 5 and a baffle ring 62 coaxially rotatably installed on the side of the fixed ring 61 away from the inlet pipe 4. A plurality of air holes 611 are provided on one end face of the fixed ring 61 at intervals along the circumferential direction of its axis, and a plurality of air holes 611 are provided on one end face of the baffle ring 62 at intervals along the circumferential direction of its axis. The baffle ring 62 can be rotated until the plurality of air holes 611 thereon correspond coaxially with the plurality of air holes 611 on the fixed ring 61, and the baffle ring 62 can be rotated until the plurality of air holes 611 on the fixed ring 61 are all closed. One end of the inlet pipe 4 is coaxially sealed and fixedly installed on the fixed ring 61.

[0042] ReferenceFigure 3 and Figure 4 On the ground on one side of the rack 2, a mounting bracket 8 is fixedly installed. The mounting bracket 8 is used to fixedly support the air outlet pipe 5, and a driving mechanism for driving the rotation of the retaining ring 62 is provided on the mounting bracket 8.

[0043] Refer to Figure 3 and Figure 4 The driving mechanism includes two positioning rods 7 threadedly installed on the mounting bracket 8 coaxially. The two positioning rods 7 are respectively located on both sides of the air outlet pipe 5, and the axes of the two positioning rods are both arranged along the radial direction of the air outlet pipe 5. The end faces of the relative ends of the two positioning rods 7 are both conical, and the conical ends of the two positioning rods 7 hermetically slide through the side wall of the air outlet pipe 5 and are located inside the air outlet pipe 5.

[0044] Refer to Figure 3 and Figure 4 Two positioning holes 621 that are fitted with the conical end faces of the positioning rods 7 are provided on the side wall of the retaining ring 62. The two positioning holes 621 of the retaining ring 62 are both opened along the radial direction of the retaining ring 62, and the included angle between the axes of the two positioning holes 621 of the retaining ring 62 is less than 180 degrees. Rotating the first positioning rod 7 can slide the conical end of the positioning rod 7 into the positioning hole 621 and fit and embed in the first positioning hole 621. At this time, the retaining ring 62 closes all the air holes 611 of the fixing ring 61. At this time, rotating the second positioning rod 7, after the second positioning rod 7 is tightened, the tip side wall of its conical end abuts against the hole side wall of the second positioning hole 621 of the retaining ring 62.

[0045] Refer to Figure 3 and Figure 4 Refer to Figure 3 and Figure 4 Similarly, rotating the first positioning rod 7 in the reverse direction and rotating the second positioning rod 7 in the forward direction, so that the conical end of the second positioning rod 7 fits and embeds in the second positioning hole 621, and after the tip of the conical end of the first positioning rod 7 abuts against the hole side wall of the first positioning hole 621, a plurality of air holes 611 of the retaining ring 62 are coaxially corresponding and communicated with a plurality of air holes 611 of the fixing ring 61 one by one. At this time, the steam discharge amount in the air outlet pipe 5 reaches the peak value.

[0046] Refer to Figure 3 and Figure 4, a horizontal adjustment shaft 81 is rotatably installed on the mounting bracket 8. The axis of the adjustment shaft 81 is perpendicular to the axis of the air outlet pipe 5. On the mounting bracket 8 at both ends of the adjustment shaft 81, a vertical connecting shaft 82 is rotatably installed. At both ends of the adjustment shaft 81, they are respectively drivingly connected to the upper ends of the two connecting shafts 82 through bevel gears 83. At the lower ends of the two connecting shafts 82, they are respectively drivingly connected to the opposite ends of the two positioning rods 7 through bevel gears 83. And the bevel gears 83 on the positioning rods 7 are rotatably installed on the side wall of the air outlet pipe 5. The positioning rods 7 are circumferentially fixed and axially slidable with the bevel gears 83 thereon.

[0047] Refer to Figure 3 and Figure 5 , a mounting box 10 is fixedly installed on the mounting bracket 8. A vertical partition 101 is fixedly installed inside the mounting box 10. The partition 101 divides the interior of the mounting box 10 into an independent pressure chamber 107 and an adjustment chamber 108. A detection pipe 109 is fixedly installed on the side wall of the air outlet pipe 5. One end of the detection pipe 109 is communicated with the inside of the air outlet pipe 5, and the other end of the detection pipe 109 is fixedly connected to the side wall of the mounting box 10 and communicated with the inside of the pressure chamber 107.

[0048] Refer to Figure 4 and Figure 5 , a guide rail 104 is fixedly installed in the adjustment chamber 108. A rectangular adjustment rod 102 is slidably installed on the guide rail 104. One end of the adjustment rod 102 slidably passes through the partition 101 in a sealed manner and is located in the pressure chamber 107. At the end of the adjustment rod 102 away from the partition 101, a spring 105 is provided. One end of the spring 105 is fixedly connected to the inner wall of the adjustment chamber 108, and the other end of the spring 105 is fixedly connected to the adjustment rod 102. The compression direction of the spring 105 is the same as the sliding direction of the adjustment rod 102.

[0049] Refer to Figure 4 and Figure 5 , a bevel gear 83 that meshes with the bevel gear 83 on the positioning rod 7 is rotatably installed on the top wall of the mounting box 10. The bevel gear 83 is rotatably installed on the mounting box 10 through a mounting shaft 106. One end of the mounting shaft 106 extends into the adjustment chamber 108, and an adjustment gear 103 is coaxially and fixedly installed at the end of the mounting shaft 106 located in the adjustment chamber 108. A number of teeth 921 are arranged at intervals along the length direction of the adjustment rod 102. The teeth 921 mesh with the adjustment gear 103. The sliding of the adjustment rod 102 can drive the adjustment gear 103 to rotate, and then drive the positioning rod 7 to rotate through the mounting shaft 106 and the bevel gear 83. When the positioning rod 7 rotates, it drives the other positioning rod 7 to rotate in the opposite direction synchronously through the adjustment shaft 81 and the connecting shaft 82 to drive the retaining ring 62 to rotate.

[0050] Refer to Figure 4 and Figure 5, since the interior of the pressure chamber 107 is communicated with the air outlet pipe 5 through the detection pipe 109, the air pressure in the pressure chamber 107 is the same as the air pressure in the air outlet pipe 5. When the steam pressure in the air outlet pipe 5 is too high, the air pressure overcomes the elastic force of the spring 105 and pushes the adjusting rod 102 to slide in a direction away from the pressure chamber 107. The sliding adjusting rod 102 drives the retaining ring 62 to rotate through the above process to open the air hole 611 on the fixing ring 61 for pressure relief. During the process of the pressure in the air outlet pipe 5 decreasing, the spring 105 gradually pushes the adjusting rod 102 to slide in the reverse direction, driving the retaining ring 62 to rotate in the reverse direction to gradually close the air hole 611 on the fixing ring 61. Through the above process, the air pressure in the air outlet pipe 5 is balanced, so that the air outlet pipe 5 is not likely to explode due to too high steam pressure. Moreover, the high-temperature steam discharged into the heat exchange box 3 will further heat the water in the heat exchange box 3, further improving the ice melting and anti-icing effects of the vaporizer.

[0051] Referring to Figure 2 and Figure 4 , a thermometer 53 is also fixedly installed on the air outlet pipe 5 to measure the steam temperature in the air outlet pipe 5. Two baffle plates 34 are rotatably installed in the heat exchange box 3. The rotation axes of the two baffle plates 34 are both parallel to the axis of the air inlet pipe 4, and the two baffle plates 34 are located directly above the air inlet pipe 4. The two baffle plates 34 can be rotated to be joined together to block directly above the air inlet pipe 4, and a plurality of drain holes 341 are formed through both baffle plates 34. The vertical projection of the drain holes 341 is outside the vertical projection range of the air inlet pipe 4. When the baffle plates 34 block above the air inlet pipe 4, the water discharged from the installation pipe 33 is blocked by the baffle plates 34 and discharged from the water outlet 331, so that the water has no contact with the air inlet pipe 4.

[0052] Referring to Figure 2 and Figure 4 , according to the indication of the thermometer 53, the opening degree of the baffle plates 34 is adjusted by rotating the baffle plates 34, and then the contact amount of the water with the air inlet pipe 4 is adjusted to control the cooling degree of the steam in the air inlet pipe 4. A driving member 9 is also provided on the heat exchange box 3. The driving member 9 includes two driving gears 91 rotatably installed on the side wall of the heat exchange box 3 and meshing with each other. The two driving gears 91 are respectively coaxially and fixedly connected to the two baffle plates 34. A slider 92 is also slidably installed on the side wall of the heat exchange box 3. A plurality of teeth 921 are provided on the slider 92, and the teeth 921 mesh with one of the gears. A lead screw 93 is rotatably installed on the side wall of the heat exchange box 3. The lead screw 93 passes through the slider 92 and is in threaded cooperation with the slider 92. One end of the lead screw 93 extends outside the range of the frame 2 and is coaxially and fixedly installed with a hand wheel. By rotating the lead screw 93, the slider 92 is driven to slide, and then the two gears are driven to rotate towards or away from each other to drive the two baffle plates 34 to rotate towards or away from each other.

[0053] The implementation principle of an anti-freezing device for a vaporizer in an embodiment of this application is as follows: The high-temperature steam generated by a thermal power plant passes through a heat exchange box 3 under the transportation of an intake pipe 4. A second water pump 32 transports the water in a water tank 1 to an installation pipe 33 and sprays it out from a water outlet 331 of the installation pipe 33 onto the intake pipe 4. Heat exchange occurs between the water and the high-temperature steam in the intake pipe 4. After the water is heated, it is pumped by a first water pump 31 to a water outlet pipe 22 to spray the vaporizer. The steam after temperature reduction and pressure reduction is transported by an outlet pipe 5 to a printing and dyeing factory for use.

[0054] The above are all preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. An antifreeze device for a carburetor, Features: It includes a water tank (1) and a frame (2). A heat exchange box (3) is installed on the frame (2). An air inlet pipe (4) and an air outlet pipe (5) are installed on the side wall of the heat exchange box (3). The air inlet pipe (4) is connected to the steam discharge point in the thermal power plant. The air outlet pipe (5) is used to supply steam to the printing and dyeing factory. A water inlet pipe (21) is installed on the top wall of the heat exchange box (3). The water inlet pipe (21) is connected to the water tank (1). A first water pump (31) is installed on the heat exchange box (3). The first water pump (31) is used to pump the water in the heat exchange box (3). The water outlet end of the first water pump (31) is installed with a water outlet pipe (22). The water outlet pipe (22) is used to extend to the vaporizer to spray water on the vaporizer. The water tank (1) is used to recover the water sprayed by the water outlet pipe (22). A second water pump (32) is arranged in the water tank (1). The second water pump (32) is connected to the water inlet pipe (21). An adjusting mechanism (6) for adjusting the total clearance area between the air inlet pipe (4) and the air outlet pipe (5) is arranged on the air outlet pipe (5). The adjusting mechanism (6) includes a fixed ring (61) installed in the air outlet pipe (5). One end of the air inlet pipe (4) coaxially penetrates through the fixed ring (61). A plurality of air holes (611) are circumferentially spaced apart around the axis of the fixed ring (61) on one end face of the fixed ring (61). A retaining ring (62) is also coaxially rotatably installed on the fixed ring (61). The retaining ring (62) is used to adjust the opening area of the air holes (611). A driving mechanism for driving the retaining ring (62) to rotate is also arranged on the air outlet pipe (5). An installation frame (8) is arranged on one side of the frame (2). The driving mechanism includes two positioning rods (7) threadedly installed on the installation frame (8). A detection pipe (109) is installed on the side wall of the air outlet pipe (5). An installation box (10) is arranged on the installation frame (8). A partition plate (101) is arranged in the installation box (10). The partition plate (101) divides the interior of the installation box (10) into a pressure chamber (107) and an adjustment chamber (108). One end of the detection pipe (109) far from the air outlet pipe (5) is connected to the installation box (10) and communicated with the pressure chamber (107). An adjustment rod (102) is slidably installed in the adjustment chamber (108). One end of the adjustment rod (102) hermetically slides through the partition plate (101) and is located in the pressure chamber (107). A spring (105) is arranged in the adjustment chamber (108). The two ends of the spring (105) are respectively connected to the inner wall of the adjustment chamber (108) and the end of the adjustment rod (102) far from the partition plate (101). The telescopic direction of the spring (105) is parallel to the sliding direction of the adjustment rod (102). The spring (105) is used to support the adjustment rod (102).A bevel gear (83) that meshes with the bevel gear (83) on the positioning rod (7) is rotatably mounted on the installation box (10). An adjusting gear (103) is rotatably mounted in the adjusting chamber (108). Engagement teeth (921) are arranged along the length direction of the adjusting rod (102). The engagement teeth (921) mesh with the adjusting gear (103). The adjusting gear (103) is coaxially connected to the bevel gear (83) on the installation box (10).

2. The antifreeze device for a carburetor according to claim 1, Features: One end of the air inlet pipe (4) connected to the heat exchange box (3) extends into the air inlet end of the air outlet pipe (5), a gap is provided between the air inlet pipe (4) and the air outlet pipe (5), a mounting pipe (33) is provided in the heat exchange box (3), the mounting pipe (33) is connected to the water inlet pipe (21), the mounting pipe (33) is parallel to the air inlet pipe (4), a plurality of water outlets (331) are provided on the mounting pipe (33) at intervals along the length direction thereof, and a hygrometer (52) is provided on the air outlet pipe (5).

3. The antifreeze device for a carburetor according to claim 2, Features: The mounting frame (8) is used to support the air outlet pipe (5); one end of the positioning rod (7) is sealingly slidably passed through the air outlet pipe (5) and is located in the air outlet pipe (5); the end surface of the positioning rod (7) located at one end of the air outlet pipe (5) is conical; a conical positioning hole (621) is provided on the side wall of the retaining ring (62) and is embedded with the conical end of the positioning rod (7); the positioning hole (621) is provided along the radial direction of the retaining ring (62); the positioning rod (7) can be rotated so that the conical end of the positioning rod (7) can be embedded in the corresponding positioning hole (621); when the conical end of one positioning rod (7) is embedded in the corresponding positioning hole (621), the retaining ring (62) closes all the air holes (611); and only the side wall of the tip of the conical end of the other positioning rod (7) is tightly abutted against the side wall of the opening of the positioning hole (621).

4. The antifreeze device for a carburetor according to claim 3, Features: An adjusting shaft (81) is rotatably mounted on the mounting frame (8), and a connecting shaft (82) is rotatably mounted on the mounting frame (8) at both ends of the adjusting shaft (81); one end of the connecting shaft (82) is connected to the adjusting shaft (81) via a bevel gear (83), and the other end of the connecting shaft (82) is connected to the positioning rod (7) via a bevel gear (83); the two ends of the adjusting shaft (81) are respectively transmission-connected to the two positioning rods (7) via the two connecting shafts (82); the positioning rod (7) and the bevel gear (83) are circumferentially fixed and axially slidable.

5. The antifreeze device for a carburetor according to claim 4, Features: A thermometer (53) is provided in the outlet pipe (5). Two baffles (34) are rotatably installed in the heat exchange box (3). The baffles (34) are located directly above the inlet pipe (4). The installation pipe (33) is located directly above the baffles (34). The two baffles (34) can be rotated to fit together to block the upper part of the inlet pipe (4). A number of drain holes (341) are formed through the baffles (34). The projection of the drain holes (341) on the bottom wall of the heat exchange box (3) is outside the projection range of the inlet pipe (4) on the bottom wall of the heat exchange box (3). A driving member (9) for driving the rotation of the baffles (34) is provided on the heat exchange box (3).

6. The anti-freezing device for a vaporizer according to claim 5, characterized in that: The driving member (9) includes two driving gears (91) rotatably installed on the side walls of the heat exchange box (3). The two driving gears (91) are meshed with each other and are respectively coaxially connected to the two baffles (34). A slider (92) is also slidably installed on the side wall of the heat exchange box (3). A number of teeth (921) matching with the driving gears (91) are provided on the slider (92). The teeth (921) are meshed with any one of the driving gears (91). A lead screw (93) is rotatably installed on the heat exchange box (3). The axis of the lead screw (93) is parallel to the sliding direction of the slider (92). The lead screw (93) passes through the slider (92) and is in threaded cooperation with the slider (92).

7. The anti-freezing device for a vaporizer according to claim 1, characterized in that: The frame (2) is in a cage shape to surround the heat exchange box (3). The frame (2) is located on one side of the vaporizer.

8. The anti-freezing device for a vaporizer according to claim 1, characterized in that: The outlet pipe (22) extends above the vaporizer. A number of spray heads (221) are installed on the lower side of the outlet pipe (22) located above the vaporizer. The spray heads (221) spray water towards the vaporizer.

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