Electric heating steam generator for supplying superheated steam

Abstract

The utility model relates to the technical field of heat exchange equipment, and discloses an electric heating steam generator for supplying superheated steam, which comprises a softened water tank, a water pump, a heat carrier, a buffer tank and an inner container assembly which are sequentially connected through a pipeline, and the inner container assembly comprises an inner container, a first heating pipe, a water inlet, a second heating pipe, a steam connecting pipe, a support frame and a liquid level detector. The buffer tank clings to the liner. Softened water in a pipeline is heated for the first time through a heat carrier to become warm water, the warm water enters the buffer tank, absorbs waste heat dissipated by the inner container in the buffer tank and becomes high-temperature water after being heated for the second time, and the high-temperature water enters the inner container from the buffer tank and becomes steam after being heated for the third time through the first heating pipe below the inner container. The steam is heated for the fourth time through the second heating pipe in the rising process to become superheated steam, the superheated steam flows to the steam connecting pipe to flow out, the structure is simple, the cost is low, saturated steam can be directly and continuously heated in the inner container, and other heating equipment does not need to be additionally arranged.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange equipment technology, specifically to an electric heating steam generator for supplying superheated steam. Background Technology

[0002] When the temperature of saturated steam exceeds its evaporation temperature, the steam is described as superheated steam, which exceeds the saturation temperature by a certain amount or has a certain degree of superheat. Superheated steam has wide applications in food drying, sterilization, and other fields. In the existing technology, electric boilers heat water to generate saturated steam, and then use a heating device to heat the saturated steam to generate superheated steam, which results in high costs for producing superheated steam. Utility Model Content

[0003] The purpose of this invention is to provide an electrically heated steam generator for supplying superheated steam, in order to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, this utility model provides an electric heating steam generator for supplying superheated steam, comprising a soft water tank, a water pump, a heat carrier, a buffer tank, and an inner tank assembly connected in sequence by pipelines. The inner tank assembly includes an inner tank, a first heating pipe and a water inlet disposed on the lower side of the inner tank, a second heating pipe disposed on the upper side of the inner tank, a steam pipe disposed on the top of the inner tank, a support frame disposed on the bottom of the inner tank, and a liquid level detector disposed on the side of the inner tank. The buffer tank is in close contact with the inner tank to absorb the residual heat emitted by the inner tank.

[0005] Preferably, there are nine second heating tubes arranged in a 3×3 pattern, and three guide plates are staggered on the inner wall of the inner liner to separate the three layers of second heating tubes.

[0006] Preferably, the inner liner has a first pressure controller interface, a first thermocouple interface, a pressure transmitter interface, and a pressure gauge interface arranged in sequence on its side. The first pressure controller interface, the first thermocouple interface, the pressure transmitter interface, and the pressure gauge interface are respectively connected to the first pressure controller, the first thermocouple, the pressure transmitter, and the pressure gauge. The first pressure controller interface is located below the second heating tube. The upper part of the inner liner has a second thermocouple interface connected to a second thermocouple. The second thermocouple interface is located above the second heating tube.

[0007] Preferably, the inner liner includes an inner liner body, a top plate and a bottom plate disposed at the top and bottom of the inner liner body, a safety valve connector disposed at the top of the top plate, a drain connector disposed at the bottom of the bottom plate, and a partition disposed within the inner liner body. The safety valve connector is connected to a first safety valve, and the drain connector is externally connected to a drain pipe.

[0008] Preferably, the liquid level detector includes two probe tube connectors spaced apart on the side of the inner liner, a probe tube body located at the end of the two probe tube connectors away from the inner liner, a fixed probe plate and a probe tube lower sealing plate located at the top and bottom of the probe tube body, and two liquid level gauge interfaces spaced apart on the outer wall of the probe tube body.

[0009] Preferably, the buffer tank includes a buffer tank body, with caps fixed at both the upper and lower ends of the buffer tank body. The upper cap is fixed with a second safety valve interface and a second pressure controller interface. A water outlet is fixed on the upper side of the buffer tank body. A third thermocouple is provided in the front middle part of the buffer tank body. A water inlet / drainage outlet is fixed on the lower cap.

[0010] Preferably, a first solenoid valve and a first check valve are sequentially installed on the pipeline between the buffer tank and the inner liner assembly.

[0011] Preferably, a second check valve is provided on the pipeline between the water pump and the heat carrier.

[0012] Preferably, the soft water tank includes a tank body, a water tank inlet located on the upper side of the tank body, a water inlet located at the bottom of the tank body, and a drain outlet, and a second solenoid valve is provided at the water tank inlet.

[0013] The beneficial effects of this utility model are as follows: the softened water in the pipeline is heated to warm water by a heat carrier in the first heating stage. The warm water enters the buffer tank, where it absorbs the residual heat emitted by the inner tank and is heated to high temperature water in the second heating stage. The high temperature water then enters the inner tank from the buffer tank and is heated to steam in the third heating stage by the first heating pipe at the bottom of the inner tank. As the steam rises, it is heated to superheated steam in the fourth heating stage by the second heating pipe and flows out through the steam pipe. The structure is simple and the cost is low. It can directly heat saturated steam in the inner tank without the need for additional heating equipment.

[0014] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 A schematic diagram of the structure of an electrically heated steam generator for supplying superheated steam according to one embodiment of the present invention is shown;

[0017] Figure 2A schematic diagram of the inner liner assembly according to one embodiment of the present invention is shown;

[0018] Figure 3 A schematic diagram of the structure of a liquid level detector according to one embodiment of the present invention is shown;

[0019] Figure 4 A schematic diagram of the structure of a buffer tank according to one embodiment of the present invention is shown. Detailed Implementation

[0020] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0021] Please refer to Figures 1-4 This embodiment discloses an electric heating steam generator for supplying superheated steam, including a soft water tank 1, a water pump 2, a heat carrier 3, a buffer tank 4, and an inner tank assembly 5 connected in sequence by pipelines. The inner tank assembly 5 includes an inner tank 51, a first heating pipe 52 and a water inlet 53 disposed on the lower side of the inner tank 51, a second heating pipe 54 disposed on the upper side of the inner tank 51, a steam pipe 55 disposed on the top of the inner tank 51, a support frame 56 disposed on the bottom of the inner tank 51, and a liquid level detector 57 disposed on the side of the inner tank 51. The buffer tank 4 is in close contact with the inner tank 51 to absorb the residual heat emitted by the inner tank 51.

[0022] In this embodiment, soft water is first injected into the soft water tank 1, and then pumped into the heat carrier 3 by the water pump 2 to be initially heated to warm water. After initial heating, the soft water enters the buffer tank 4. Since the buffer tank 4 absorbs the residual heat emitted by the inner tank 51, it further heats the warm water inside to high temperature water. The high temperature water finally flows into the inner tank 51 through the inlet 53 along the pipeline. After being heated by the first heating pipe 52, the high temperature water turns into water vapor. The water vapor flows upward from the bottom of the inner tank 51, and then passes through the second heating pipe 54 to be further heated into superheated steam, which finally flows out from the steam pipe 55. The entire process does not require an external heating device, reducing production costs. Moreover, the buffer tank 4 makes full use of the residual heat of the inner tank 51 to further heat the warm water, making full use of thermal energy.

[0023] In one embodiment, nine second heating tubes 54 are arranged in a 3×3 configuration. Three guide plates 58 are staggered along the inner wall of the inner liner 51, separating the three layers of second heating tubes 54. This results in an S-shaped upward trajectory for the rising steam, increasing its upward travel and allowing it to fully absorb heat, thus becoming pure superheated steam and ensuring efficient output.

[0024] Please refer to Figure 2 The inner liner 51 has a first pressure controller interface 501, a first thermocouple interface 502, a pressure transmitter interface 503, and a pressure gauge interface 504 arranged in sequence on its side. The first pressure controller interface 501, the first thermocouple interface 502, the pressure transmitter interface 503, and the pressure gauge interface 504 are respectively connected to the first pressure controller, the first thermocouple, the pressure transmitter, and the pressure gauge. The first pressure controller interface 501 is located below the second heating tube 54. The second thermocouple interface 505 is located on the upper side of the inner liner 51 and is connected to the second thermocouple. The second thermocouple interface 505 is located above the second heating tube 54.

[0025] The inner liner 51 includes an inner liner body 511, a top plate 512 and a bottom plate 513 disposed at the top and bottom of the inner liner body 511, a safety valve connector 514 disposed at the top of the top plate 512, a drain connector 515 disposed at the bottom of the bottom plate 513, and a partition 516 disposed inside the inner liner body 511. The safety valve connector 514 is connected to a first safety valve 5141, and the drain connector 515 is connected to a drain pipe.

[0026] The first thermocouple monitors the temperature of the steam formed after being heated by the first heating tube 52 in real time, and the second thermocouple monitors the temperature of the superheated steam formed after being heated by the second heating tube 54 in real time. The pressure gauge monitors the steam pressure in the inner tank 51 in real time. The load of the inner tank 51 is controlled by the first safety valve 5141, the first pressure controller and the pressure transmitter. When the pressure in the inner tank 51 exceeds the limit, the power is immediately cut off and the furnace is shut down through the first pressure controller and the pressure transmitter. At the same time, an audible and visual alarm is issued. While the control and protection actions are in place, the first safety valve 5141 is opened to release steam and relieve pressure.

[0027] Please refer to Figure 3The liquid level detector 57 includes two probe tube connectors 371 spaced apart on the side of the inner tank, a probe tube body 372 located at the end of the two probe tube connectors 371 away from the inner tank 51, a fixed probe plate 373 and a probe tube lower sealing plate 374 located at the top and bottom of the probe tube body 372, and two liquid level gauge interfaces 375 spaced apart on the outer wall of the probe tube body 372. The fixed probe plate 373 is used to connect a three-stage water level probe, and the liquid level gauge interfaces 375 are used to connect a visible liquid level fiberglass. The three-stage water level probe monitors the water level in real time. When the water level is low, water pump 2 will start automatically; when the water level is high, water pump 2 will stop automatically. When the water level falls below the low water level line due to abnormal conditions such as water pump 2 failure, an audible and visual alarm will be issued first. When the water level is at the minimum safe water level line, the power will be cut off and the boiler will be shut down immediately, and an audible and visual alarm will be issued at the same time. When the water level in the inner tank 51 is high, the protection action is the same as above. When the extreme low water level is reached, the boiler will be shut down and locked immediately, completely eliminating water shortage accidents caused by false water levels in the steam generator. The automatic control level is high and the safety protection devices are complete, making the steam generator easy to operate, safe and reliable in operation, and able to achieve fully automatic water supply and operation.

[0028] Please refer to Figure 4 The buffer tank 4 includes a buffer tank body 41, with caps 42 fixed at both ends. The upper cap 42 is fixed with a second safety valve interface 43 and a second pressure controller interface 44. An outlet 45 is fixed to the upper side of the buffer tank body 41. A third thermocouple 46 is located at the front middle of the buffer tank body 41, and an inlet / outlet 47 is fixed to the lower cap 42. The second safety valve interface 43 and the second pressure controller interface 44 are respectively connected to the second safety valve and the second pressure controller, which control the load within the buffer tank 4. When the pressure in the buffer tank 4 exceeds the limit, the second pressure controller immediately cuts off the power and shuts down the boiler, simultaneously issuing an audible and visual alarm. While the control and protection actions are in place, the second safety valve opens to release steam and relieve pressure. The third thermocouple 46 monitors the temperature of the high-temperature water in the buffer tank in real time.

[0029] In one embodiment, a first solenoid valve 101 and a first check valve 102 are sequentially installed on the pipeline between the buffer tank 4 and the inner liner assembly 5. The first solenoid valve 101 controls the amount of water entering the inner liner 51 to control the output of superheated steam, and the first check valve 102 prevents steam backflow, ensuring that high-temperature water can smoothly enter the inner liner 51.

[0030] In one embodiment, a second check valve 103 is provided on the pipeline between the water pump 2 and the heat carrier 3 to prevent the warm water in the heat carrier 3 from flowing back and affecting the water supply rate.

[0031] In one embodiment, the soft water tank 1 includes a tank body 11, a water tank inlet 12 located on the upper side of the tank body 11, a water inlet 13 located at the bottom of the tank body 11, and a drain outlet 14. A second solenoid valve 104 is provided at the water tank inlet 12, and soft water enters the heat carrier 3 from the water inlet 13 via the water pump 2.

[0032] In summary, this embodiment uses heat carrier 3 to heat the softened water in the pipeline to a warm temperature. The warm water enters the buffer tank 4, where it absorbs the residual heat from the inner tank 51 and undergoes a second heating process to become high-temperature water. The high-temperature water then enters the inner tank 51 from the buffer tank 4 and undergoes a third heating process through the first heating pipe 52 to become steam. As the steam rises, it undergoes a fourth heating process through the second heating pipe 54 to become superheated steam, which flows out through the steam pipe 55. The structure is simple and low-cost, and saturated steam can be directly heated inside the inner tank 51 without the need for additional heating equipment.

[0033] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention. It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present invention will not further describe the various possible combinations.

[0034] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. An electrically heated steam generator for supplying superheated steam, characterized in that, The system includes a soft water tank, a water pump, a heat carrier, a buffer tank, and an inner tank assembly connected in sequence by pipelines. The inner tank assembly includes an inner tank, a first heating pipe and a water inlet located on the lower side of the inner tank, a second heating pipe located on the upper side of the inner tank, a steam pipe located on the top of the inner tank, a support frame located on the bottom of the inner tank, and a liquid level detector located on the side of the inner tank. The buffer tank is in close contact with the inner tank to absorb the residual heat emitted by the inner tank.

2. The electrically heated steam generator for supplying superheated steam according to claim 1, characterized in that, There are nine second heating tubes arranged in a 3×3 pattern. Three guide plates are staggered on the inner wall of the inner liner, which separate the three layers of second heating tubes.

3. The electrically heated steam generator for supplying superheated steam according to claim 1, characterized in that, The inner liner has a first pressure controller interface, a first thermocouple interface, a pressure transmitter interface, and a pressure gauge interface arranged in sequence on its side. The first pressure controller interface, the first thermocouple interface, the pressure transmitter interface, and the pressure gauge interface are respectively connected to the first pressure controller, the first thermocouple, the pressure transmitter, and the pressure gauge. The first pressure controller interface is located below the second heating tube. The upper part of the inner liner has a second thermocouple interface connected to a second thermocouple. The second thermocouple interface is located above the second heating tube.

4. The electrically heated steam generator for supplying superheated steam according to claim 1, characterized in that, The inner liner includes an inner liner body, a top plate and a bottom plate disposed at the top and bottom of the inner liner body, a safety valve connector disposed at the top of the top plate, a drain connector disposed at the bottom of the bottom plate, and a partition disposed within the inner liner body. The safety valve connector is connected to a first safety valve, and the drain connector is externally connected to a drain pipe.

5. The electrically heated steam generator for supplying superheated steam according to claim 1, characterized in that, The liquid level detector includes two probe tube connectors spaced apart on the side of the inner liner, a probe tube body located at the end of the two probe tube connectors away from the inner liner, a fixed probe plate and a probe tube lower sealing plate located at the top and bottom of the probe tube body, and two liquid level gauge interfaces spaced apart on the outer wall of the probe tube body.

6. The electrically heated steam generator for supplying superheated steam according to claim 1, characterized in that, The buffer tank includes a buffer tank body, with caps fixed at both the upper and lower ends. The upper cap is fixed with a second safety valve interface and a second pressure controller interface. A water outlet is fixed on the upper side of the buffer tank body. A third thermocouple is provided in the front middle part of the buffer tank body. A water inlet / drain outlet is fixed on the lower cap.

7. The electrically heated steam generator for supplying superheated steam according to claim 1, characterized in that, A first solenoid valve and a first check valve are sequentially installed on the pipeline between the buffer tank and the inner liner assembly.

8. The electrically heated steam generator for supplying superheated steam according to claim 1, characterized in that, A second check valve is installed on the pipeline between the water pump and the heat carrier.

9. The electrically heated steam generator for supplying superheated steam according to claim 1, characterized in that, The soft water tank includes a tank body, a water tank inlet located on the upper side of the tank body, a water inlet located at the bottom of the tank body, and a drain outlet. A second solenoid valve is provided at the water tank inlet.

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