Energy-saving device utilizing steam collection and system thereof

Abstract

The utility model provides an energy-saving device utilizing steam collection and a system thereof, the energy-saving device comprises a vertical hot water tank with a tank cover on the top, and further comprises a steam spray pipe; a water inlet and a steam outlet are formed in the tank cover, a water outlet is formed in the bottom of the vertical hot water tank, a steam inlet is formed in the tank wall, and the steam spray pipe is arranged in the vertical hot water tank and located below a preset water line; the steam spraying pipe comprises a spraying pipe connector, annular spraying pipes and connecting pipes, a plurality of spraying openings are formed in the circular face of the bottom of each annular spraying pipe, the annular spraying pipes are arranged at equal intervals in the height direction, the diameters of the annular spraying pipes are sequentially increased from top to bottom, every two adjacent annular spraying pipes are connected through the corresponding connecting pipe, and the lowermost annular spraying pipe is connected with the spraying pipe connector. The spray pipe joint is connected with the inner end of the steam inlet. The steam spraying pipe of the energy-saving device is immersed in water, so that the purpose of heat exchange is achieved through direct mixing of steam and water, and compared with the prior art, the heat exchange efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of steam recovery, in particular to an energy-saving device and a system thereof utilizing steam collection. Background Art

[0002] The patent with publication number CN220103105U discloses a steam waste heat recovery system. Although the patent can realize the recovery of steam, according to its disclosure content - "high-pressure steam enters the water tank through the steam inlet above the water tank, and then is discharged into the gas-liquid separator through the steam exhaust port above the water tank." It can be seen that the patent does not disclose how steam and water complete heat exchange. The patent with publication number CN219869201U discloses a steam waste heat cascade recovery device. The patent uses a heat exchange mechanism to realize heat exchange between two media (steam and cooling water). However, for steam and cooling water, they are just different states of the same substance, and heat exchange can be achieved by mixing the two. Therefore, the use of a heat exchange mechanism will only affect the heat exchange efficiency.

[0003] Therefore, there is room for further improvement in the heat exchange efficiency of the current steam recovery technology. Summary of the invention

[0004] The object of the present invention is to provide an energy-saving device and a system thereof using steam collection, which can improve the heat exchange efficiency of the energy-saving device.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an energy-saving device utilizing steam collection, comprising a vertical hot water tank with a tank cover installed on the top, and a steam nozzle; the tank cover is provided with a water inlet and a steam outlet, the bottom of the vertical hot water tank is provided with a water outlet, and the tank wall is provided with a steam inlet, and the steam nozzle is provided in the vertical hot water tank and is located below a preset water level line;

[0006] The steam nozzle includes a nozzle joint, an annular nozzle and a connecting pipe. The bottom circular surface of the annular nozzle is provided with a plurality of nozzles. The annular nozzle is provided with a plurality of nozzles at equal intervals in the height direction, and the diameters thereof increase from high to low. Two adjacent annular nozzles are connected by the connecting pipe. The lowest annular nozzle is connected to the nozzle joint, and the nozzle joint is connected to the inner end of the steam inlet.

[0007] Furthermore, the connecting pipes are arranged in a staggered manner layer by layer, and the connecting pipe on the lowest annular nozzle is arranged opposite to the nozzle joint.

[0008] Furthermore, it also includes a descaling spray pipe and a chemical pipeline. The bottom of the vertical hot water tank is also provided with a sewage outlet, and the tank wall is provided with a spray pipe outlet. The descaling spray pipe is arranged in the vertical hot water tank and is located above the preset water level line. It is connected to the spray pipe outlet and the chemical pipeline, and a sewage valve is installed at the sewage outlet.

[0009] Furthermore, the tank cover is also provided with a manhole, and a manhole cover plate is installed at the manhole.

[0010] Furthermore, the steam outlet is installed with a first temperature sensor, and the water outlet is installed with a second temperature sensor.

[0011] Furthermore, two float liquid level gauges are installed one above and one below on the inner side of the tank wall of the vertical hot water tank, and the float of the float liquid level gauge located on the upper one is located below the preset water level line.

[0012] The present invention also provides an energy-saving system utilizing steam collection, comprising a low-pressure steam pipeline, a high-pressure steam pipeline, a drainage pipeline, a water supply pipeline and a gas-liquid separator, wherein the low-pressure steam pipeline is connected to the steam inlet of the gas-liquid separator, the water supply pipeline is connected to the water supply port of the gas-liquid separator, and also comprises the above-mentioned energy-saving device utilizing steam collection; the steam outlet of the energy-saving device is connected to the steam inlet of the gas-liquid separator through an exhaust pipeline, its water inlet is connected to the drainage port of the gas-liquid separator through a drainage pipeline, and its steam inlet is connected to the high-pressure steam pipeline.

[0013] Furthermore, the energy-saving device also includes a descaling nozzle and a chemical pipeline. The bottom of the vertical hot water tank is also provided with a sewage outlet, and the tank wall is provided with a nozzle outlet. The descaling nozzle is arranged in the vertical hot water tank and is located above the preset water level line. It is connected to the nozzle outlet and the chemical pipeline. A sewage valve is installed at the sewage outlet; a branch is led out from the chemical pipeline and connected to the drainage pipeline.

[0014] Furthermore, the water supply pipeline leads out a branch, and the branch is connected to the low-pressure steam pipeline through a suction exhaust steam power head.

[0015] The present invention also provides an energy-saving device utilizing steam collection, comprising a waste heat recovery device, wherein the waste heat recovery device is the above-mentioned energy-saving device utilizing steam collection.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1) The steam nozzle of the energy-saving device in the present invention is immersed in water, so that the purpose of heat exchange is achieved by direct mixing of steam and water, which greatly improves the efficiency of heat exchange compared with the prior art.

[0018] 2) The steam nozzle in the present invention adopts a layer-by-layer distribution structure, which not only ensures the uniformity of the distribution of the nozzles on the plane projection, but also reduces the tumbling degree of water and avoids a large amount of water evaporation.

[0019] 3) The descaling nozzle in the present invention can spray and descale the water-immersed parts, and at the same time use the nozzle to spray clean water for flushing to achieve the discharge of scale.

[0020] 4) The present invention uses a temperature sensor at the steam outlet and a temperature sensor at the drain outlet for monitoring, which is helpful for water replenishment and temperature control. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural stereogram of the energy-saving device in the present invention;

[0022] Figure 2 for Figure 1 A front view of the structure of the energy saving device shown;

[0023] Figure 3 for Figure 2 Structural cross-section view along the AA axis;

[0024] Figure 4 for Figure 1 A structural stereogram of the steam nozzle in the energy-saving device shown (oblique upward viewing angle);

[0025] Figure 5 It is a structural schematic diagram of the energy-saving system in the present invention (arrows indicate the flow direction of the medium). DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention are described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] like Figures 1 to 4 As shown, this embodiment discloses an energy-saving device using steam collection, including a vertical hot water tank 1 and a steam nozzle 8. A tank cover 2 is installed on the top of the vertical hot water tank 1 through a flange structure, so that the interior of the vertical hot water tank 1 becomes a relatively closed state.

[0028] The tank cover 2 is provided with a water inlet 2.1 and a steam outlet 2.2. The function of the water inlet 2.1 is to add water to the vertical hot water tank 1. The function of the steam outlet 2.2 is to discharge the residual steam after heat exchange. The bottom of the vertical hot water tank 1 is provided with a water outlet 1.3, and the tank wall is provided with a steam inlet 1.1. The function of the water outlet 1.3 is to discharge the hot water after heat exchange to the corresponding production link to realize the secondary utilization of waste heat.

[0029] The steam nozzle 8 is arranged in the vertical hot water tank 1 through a nozzle fixing frame and is located below the preset water level line. The steam nozzle 8 is arranged in a way of being immersed in water, so that the discharged steam is directly mixed with water to complete the heat exchange, and the exchange efficiency is higher. The corresponding port structures are all provided with flange structures for connecting the corresponding pipelines.

[0030] The steam nozzle 8 includes a nozzle joint 8.3, an annular nozzle 8.1 and a connecting pipe 8.2. The bottom circular surface of the annular nozzle 8.1 is provided with a plurality of nozzles 8.4. The annular nozzle 8.1 is provided with five nozzles 8.4 at equal distances in the height direction, and its diameter increases from high to low. That is to say, the annular nozzle 8.1 with the largest diameter is located at the bottom, and the annular nozzle 8.1 with the smallest diameter is located at the top. The advantage of such a setting is that, on the one hand, it can ensure that the nozzles 8.4 are evenly distributed on the horizontal plane projection, so that the steam can fully contact with the water after being ejected, and on the other hand, it can avoid the mixing of the two and cause the water to churn violently, thereby reducing the evaporation rate. Each annular nozzle 8.1 is fixed to the tank wall of the vertical hot water tank 1 by at least two nozzle fixing frames, which is a prior art and will not be described here. Two adjacent annular nozzles 8.1 are connected by a connecting pipe 8.2, and the lowest annular nozzle 8.1 is connected to the nozzle joint 8.3, and the nozzle joint 8.3 is connected to the inner end of the steam inlet 1.1.

[0031] The connecting pipes 8.2 are arranged in a staggered manner layer by layer, and the connecting pipe 8.2 on the lowest annular nozzle 8.1 is arranged opposite to the nozzle joint 8.3.

[0032] The energy-saving device also includes a descaling nozzle 5 and a medicine pipeline. A sewage outlet 1.2 is also provided at the bottom of the vertical hot water tank 1, and a nozzle port 1.4 is provided on the tank wall. The sewage outlet 1.2 is used to discharge dirt, and the nozzle port 1.4 is used to install the descaling nozzle 5. The descaling nozzle 5 is arranged in the vertical hot water tank 1 and is located above the preset water level line. It is connected to the nozzle port 1.4 and the medicine pipeline, and a sewage valve 9 is installed at the sewage outlet 1.2. Since the water level in the tank is near the preset water level line most of the time, scale will form on the surface of the tank wall and the steam nozzle 8. The spray holes on the descaling nozzle 5 are arranged downward and on both sides, so as to clean the above parts that are easy to adhere to scale.

[0033] In order to facilitate inspection and maintenance, the tank cover 2 is also provided with a manhole 2.3, and a manhole cover plate 3 is installed at the manhole 2.3. In the working state, the manhole cover plate 3 is in a closed state.

[0034] In order to facilitate monitoring of the steam recovery status, the steam outlet 2.2 is equipped with a first temperature sensor 4, and the water outlet 1.3 is equipped with a second temperature sensor 6. According to the data detected by the two temperature sensors, the water and steam parameters can be adjusted to achieve the best operating state. The above temperature controllers are all high temperature resistant temperature sensors with a temperature range of -50℃-500℃.

[0035] In order to monitor the water level in the pipe, two float level gauges 7 are installed on the inner side of the tank wall of the vertical hot water tank 1, one above and one below. The float of the upper float level gauge 7 is below the preset water level line. When the hot water in the tank needs to be discharged to other production links, the water level will drop. After it drops to trigger the action of the lower float level gauge 7, the hot water in the tank will no longer be discharged. Instead, water needs to be refilled into the tank until the water level rises to trigger the action of the upper float level gauge. The water supply ends and the water level returns to the preset water level line. The float level gauge 7 is a high temperature resistant level gauge with a temperature range of -30℃-120℃.

[0036] like Figure 5 As shown, the present invention also provides an energy-saving system using steam collection, including a low-pressure steam pipeline, a high-pressure steam pipeline, a drainage pipeline, a water supply pipeline, a gas-liquid separator 200 and an energy-saving device. The low-pressure steam pipeline is connected to the steam inlet of the gas-liquid separator, and the water supply pipeline is connected to the water supply port of the gas-liquid separator. The steam outlet 2.2 of the energy-saving device 100 is connected to the steam inlet of the gas-liquid separator through an exhaust pipeline, and a one-way valve is provided in the exhaust pipeline.

[0037] After heat exchange, the steam in the energy-saving device 100 is discharged from the exhaust pipe into the gas-liquid separator. When the steam pressure in the gas-liquid separator is too high, the internal steam is discharged through the exhaust port at the top. The water inlet 2.1 of the energy-saving device 100 is connected to the drain port of the gas-liquid separator through a drain pipe, and its steam inlet 1.1 is connected to the high-pressure steam pipe. The high-pressure steam pipe, the drain pipe, and the water supply pipe are all provided with valves 500.

[0038] A branch line is led out from the reagent pipeline and connected to the drainage pipeline. The reagent pipeline is connected to the reagent box. The reagent pipeline and its branch lines are both provided with a pump 600 and a valve 500. When descaling, the valve 50 on the branch line is closed, and the reagent is input into the descaling spray pipe 5 through the pump in the reagent pipeline, and sprayed onto the scale surface in the tank in a spraying manner, so that the two react, and then the valve 500 in the reagent pipeline is closed, the valve 500 on the branch line is opened, and the pump 600 on the branch line is started, and the water in the gas-liquid separation tank is input into the descaling spray pipe 5, so as to rinse the surface residues of the components in the tank, and the washed dirt and water are discharged through the sewage outlet 1.2. When the energy-saving device does not need to supply water to other production links, the water level is lower than the preset water level line to the above float level gauge action will trigger the water replenishment operation, the valve in the drainage pipeline is opened, and the condensed water in the gas-liquid separator 200 will be transported to the energy-saving device 100 until the water level reaches the preset water level line. The preset water level is set according to the storage capacity of the vertical hot water tank 1, which will not be described in detail here. When hot water is needed to be provided to other links, the hot water in the energy-saving device 100 is discharged until the water level drops to trigger the action of the float level gauge below, thereby replenishing water into the energy-saving device 100 through the water replenishment pipeline.

[0039] A branch is led out from the water supply pipeline, and the branch is connected to the low-pressure steam pipeline through the exhaust steam extraction power head 300. By supplying water to the exhaust steam extraction power head, the low-pressure steam is quickly extracted and mixed condensed water is formed in the low-pressure steam pipeline and supplied to the gas-liquid separator 200.

[0040] It should be noted that the control part in the present invention is prior art, so it will not be described in detail.

[0041] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

[0042] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying 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 direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation of the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0043] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. 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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified and replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. An energy-saving device utilizing steam collection, comprising a vertical hot water tank (1) with a tank cover (2) mounted on the top, characterized in that: It also includes a steam nozzle (8); the tank cover (2) is provided with a water inlet (2.1) and a steam outlet (2.2); the bottom of the vertical hot water tank (1) is provided with a water outlet (1.3); the tank wall is provided with a steam inlet (1.1); the steam nozzle (8) is arranged in the vertical hot water tank (1) and is located below a preset water level line; The steam nozzle (8) comprises a nozzle joint (8.3), an annular nozzle (8.1) and a connecting pipe (8.2); a plurality of nozzles (8.4) are arranged on the bottom circular surface of the annular nozzle (8.1); a plurality of the annular nozzles (8.1) are arranged at equal intervals in the height direction, and their diameters increase from high to low; two adjacent annular nozzles (8.1) are connected via the connecting pipe (8.2); the lowest annular nozzle (8.1) is connected to the nozzle joint (8.3), and the nozzle joint (8.3) is connected to the inner end of the steam inlet (1.1).

2. The energy-saving device using steam collection according to claim 1, characterized in that: The connecting pipes (8.2) are arranged in a staggered manner layer by layer, and the connecting pipe (8.2) on the lowest annular nozzle (8.1) is arranged opposite to the nozzle joint (8.3).

3. The energy-saving device using steam collection according to claim 1, characterized in that: It also includes a descaling spray pipe (5) and a medicine pipeline. The bottom of the vertical hot water tank (1) is also provided with a sewage outlet (1.2), and the tank wall is provided with a spray pipe opening (1.4). The descaling spray pipe (5) is arranged in the vertical hot water tank (1) and is located above the preset water level line. It is connected to the spray pipe opening (1.4) and the medicine pipeline. A sewage valve (9) is installed at the sewage outlet (1.2).

4. The energy-saving device using steam collection according to claim 1, characterized in that: The tank cover (2) is also provided with a manhole (2.3), and a manhole cover plate (3) is installed at the manhole (2.3).

5. The energy-saving device using steam collection according to claim 1, characterized in that: The steam outlet (2.2) is installed with a first temperature sensor (4), and the water outlet (1.3) is installed with a second temperature sensor (6).

6. The energy-saving device using steam collection according to claim 1, characterized in that: Two float liquid level gauges (7) are installed one above the other on the inner side of the tank wall of the vertical hot water tank (1), and the float of the float liquid level gauge (7) located on the upper side is located below the preset water level line.

7. An energy-saving system using steam collection, comprising a low-pressure steam pipeline, a high-pressure steam pipeline, a drainage pipeline, a water supply pipeline and a gas-liquid separator, wherein the low-pressure steam pipeline is connected to the steam inlet of the gas-liquid separator, and the water supply pipeline is connected to the water supply port of the gas-liquid separator, characterized in that: It also includes an energy-saving device using steam collection as described in claim 1; the steam outlet (2.2) of the energy-saving device is connected to the steam inlet of the gas-liquid separator through an exhaust pipe, its water inlet (2.1) is connected to the drain outlet of the gas-liquid separator through a drain pipe, and its steam inlet (1.1) is connected to the high-pressure steam pipeline.

8. The energy-saving system using steam collection according to claim 7, characterized in that: The energy-saving device further comprises a descaling spray pipe (5) and a chemical pipeline. The bottom of the vertical hot water tank (1) is also provided with a sewage outlet (1.2), and the tank wall is provided with a spray pipe opening (1.4). The descaling spray pipe (5) is arranged in the vertical hot water tank (1) and is located above the preset water level line. The spray pipe opening (1.4) is connected to the chemical pipeline. A sewage valve (9) is installed at the sewage outlet (1.2); a branch line is led out from the chemical pipeline and connected to the drainage pipeline.

9. The energy-saving system using steam collection according to claim 8, characterized in that: The water replenishment pipeline leads out a branch and is connected to the low-pressure steam pipeline through a suction exhaust steam power head (300).

Images