Steam generator

Abstract

The utility model discloses a steam generator which comprises a water softening tank, a water supplementing tank, a steam generator body and a steam distributing cylinder, the water softening tank supplies soft water to the steam generator body through the water supplementing tank, the steam generator body heats the water to generate steam, the steam is conveyed to equipment through the steam distributing cylinder, and the steam generator body is provided with a water supply outlet pipeline and a water supply inlet pipeline. The water supply outlet pipeline is provided with a branch pipe for supplying water to the electric heating evaporator, and the output end of the electric heating evaporator is communicated with the branch air cylinder. According to the steam generator, high-temperature soft water is circulated out of the steam generator and fed into the electric heating evaporator according to needs, the electric heating evaporator works to generate steam, the electric heating efficiency is higher, but the energy consumption is large, and therefore when the steam pressure of the electric heating evaporator is insufficient, the key steam system guarantee effect can be achieved; and meanwhile, the power consumption is reduced as much as possible by utilizing a secondary heating mode of high-temperature soft water in the steam generator.

Description

Technical Field

[0001] The utility model relates to a steam generator, in particular to a steam generator for a steam system of a heat-conducting oil boiler. Background Art

[0002] The steam generator is used in combination with a heat-conducting oil furnace and is widely applied to industries such as food processing, rubber, wood processing, and grease, meeting the process requirements of generating steam with only one heat-conducting oil furnace, saving a large amount of equipment investment and labor costs, and the heat-conducting oil steam generator generates steam.

[0003] Most steam generators are originally configured. After the steam generator built for the heat-conducting oil boiler is put into normal operation, the pressure and generation amount of the steam system do not necessarily meet the steam system of the production device. Replacing a steam generator with higher efficiency is too costly. Therefore, it is necessary to improve and enhance the steam generator system built for the heat-conducting oil boiler at low cost through technical improvement so that it can meet the production needs. Content of the Utility Model

[0004] The purpose of the utility model is to provide a steam generator to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A steam generator includes a soft water tank, a makeup water tank, a steam generator, and a steam header. The soft water tank supplies soft water to the steam generator through the makeup water tank. The steam generator heats the water to generate steam and sends it to the equipment through the steam header. The steam generator is provided with a feed water outlet pipeline and a feed water inlet pipeline. A branch pipe for supplying water to an electric heating evaporator is arranged on the feed water outlet pipeline. The output end of the electric heating evaporator is communicated with the steam header.

[0007] As a further scheme of the utility model: The steam generator is communicated with the steam header through a steam output pipeline. The electric heating evaporator is connected in parallel to the steam output pipeline through a steam inlet pipeline and a steam discharge pipeline, and the steam transmission route is controlled by a gas valve.

[0008] As a further scheme of the utility model: The liquid phase output end of the electric heating evaporator is communicated with a separation tank through a liquid phase pipeline. The separation tank is provided with an exhaust pipeline for exhausting gas and a reflux pipeline for liquid phase reflux. The other end of the reflux pipeline is communicated with the makeup water tank.

[0009] As a further scheme of the utility model: The liquid phase output port of the steam header is also connected to the reflux pipeline. A flow valve and a flowmeter are arranged on the reflux pipeline.

[0010] As a further solution of the utility model: the feed water inlet pipeline supplies water into the steam generator through two parallel liquid pumps, and valves for switching the alternate operation of the two liquid pumps are arranged on the pipelines of the two parallel liquid pumps.

[0011] As a further solution of the utility model: a liquid phase make-up water pipeline for connecting the feed water outlet pipeline and the feed water inlet pipeline is arranged between the feed water outlet pipeline and the feed water inlet pipeline, and valves for controlling the liquid phase flow rate are installed on the liquid phase make-up water pipeline, the feed water outlet pipeline and the feed water inlet pipeline.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] For this steam generator, after the high-temperature soft water circulates out of the steam generator, it is sent into the electric heating evaporator as needed. The electric heating evaporator operates to generate steam. The electric heating efficiency is higher, but the energy consumption is relatively large. Therefore, when the steam pressure of the electric heating evaporator is insufficient, it can play a key role in ensuring the steam system. At the same time, by using the method of secondary heating with the high-temperature soft water in the steam generator, the power consumption is reduced as much as possible. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of a steam generator.

[0015] In the figure: 1, soft water tank; 2, make-up water tank; 3, liquid pump; 4, feed water inlet pipeline; 5, steam generator; 6, feed water outlet pipeline; 7, liquid phase make-up water pipeline; 8, steam output pipeline; 9, distribution cylinder; 10, branch line; 11, branch pipe; 12, electric heating evaporator; 13, steam inlet pipeline; 14, liquid phase pipeline; 15, separation tank; 16, return pipeline; 17, exhaust pipeline. Detailed Embodiment

[0016] Please refer to Figure 1, in the embodiment of the present utility model, a steam generator includes a soft water tank 1, a make-up water tank 2, a steam generator 5 and a steam distribution cylinder 9. The soft water tank 1 supplies soft water to the steam generator 5 through the make-up water tank 2. The steam generator 5 heats the water to generate steam and sends it to the equipment through the steam distribution cylinder 9. The steam generator 5 is provided with a feed water outlet pipeline 6 and a feed water inlet pipeline 4. A branch pipe 11 for supplying water to the electric heating evaporator 12 is provided on the feed water outlet pipeline 6. The output end of the electric heating evaporator 12 is communicated with the steam distribution cylinder 9. A branch line 10 is provided at the top of the steam distribution cylinder 9 to convey steam to multiple devices. The soft water tank 1 sends soft water into the steam generator 5 through the make-up water tank 2. The steam generator 5 operates to output steam. High-temperature soft water is drawn out in the steam generator 5 for a primary cycle and returned to the steam generator 5. During the cycle, part of the high-temperature soft water is sent into the electric heating evaporator 12 through the branch pipe 11. The high-temperature soft water is secondary heated by the electric heating evaporator 12 to quickly form steam, which is sent into the steam distribution cylinder 9 to supplement the steam pressure. This can not only increase the steam output pressure, but also effectively improve the steam pressure control. When the electric heating evaporator 12 is not in use, the electric heating evaporator 12 is used as a buffer tank to make the output steam pressure stable and store the air pressure. Secondly, by controlling the liquid phase flow direction with valves, when the steam generator 5 is initially started, the electric heating evaporator 12 can also assist in heating the soft water to increase its heating speed, generate steam too quickly, and improve the equipment startup speed.

[0017] In a preferred embodiment, the steam generator 5 is communicated with the steam distribution cylinder 9 through a steam output pipeline 8. The electric heating evaporator 12 is connected in parallel to the steam output pipeline 8 through a steam inlet pipeline 13 and a steam discharge pipeline 18, and the steam delivery route is controlled by a gas valve. The steam output pipeline 8 is the main route for the steam generator 5 to output steam. Under the switching of the pipeline valves, the electric heating evaporator 12 and the steam generator 5 can cooperate with each other. The steam can also enter the electric heating evaporator 12 through the steam inlet pipeline 13 for secondary processing to saturation, enabling the equipment to have diverse working modes and better matching different operation requirements.

[0018] In a preferred embodiment, the liquid phase output end of the electric heating evaporator 12 is communicated with a separation tank 15 through a liquid phase pipeline 14. The separation tank 15 is provided with an exhaust pipeline 17 for exhausting gas and a reflux pipeline 16 for liquid phase reflux. The other end of the reflux pipeline 16 is communicated with the make-up water tank 2. The separation tank 15 is the main equipment when the machine is stopped, or the steam pressure is reduced, and the electric heating evaporator 12 stops operating. When the machine is suddenly stopped and the steam output is reduced, boiling water is output through the liquid phase pipeline 14. The high-temperature soft water is depressurized through the separation tank 15, and the steam is discharged through the exhaust pipeline 17. The high-temperature soft water flows back into the make-up water tank 2 to increase the soft water temperature in the make-up water tank 2 and reduce the energy consumption of the steam generator 5. The condensed water generated by the steam distribution cylinder 9 is also sent back to the make-up water tank 2 to increase the soft water temperature.

[0019] In a preferred embodiment, the liquid-phase output port of the steam distribution cylinder 9 is also connected to the return pipeline 16. A flow valve and a flow meter are provided on the return pipeline 16. When replenishing water into the water replenishing tank 2 through the return pipeline 16, the water replenishing amount from the soft water tank 1 to the water replenishing tank 2 is controlled according to the flow parameters of the flow valve and the flow meter, and the return pipeline 16 is preferably used for water replenishment.

[0020] In a preferred embodiment, the feed water inlet pipeline 4 supplies water into the steam generator 5 through two parallel liquid pumps 3. Valves for switching the two liquid pumps 3 to operate alternately are provided on the pipelines of the two parallel liquid pumps 3. A liquid-phase water replenishing pipeline 7 for connecting the feed water outlet pipeline 6 and the feed water inlet pipeline 4 to each other is provided between the feed water outlet pipeline 6 and the feed water inlet pipeline 4. Valves for controlling the liquid-phase flow are installed on the liquid-phase water replenishing pipeline 7, the feed water outlet pipeline 6 and the feed water inlet pipeline 4. The control of the pipelines mainly relies on valves, and the valves can be programmed and controlled by means of remote control, which is convenient for better controlling the steam output pressure.

[0021] It should be noted that the above embodiments all belong to the same inventive concept of the utility model. The descriptions of the embodiments have their own emphases. For the parts not described in detail in individual embodiments, reference can be made to the descriptions in other embodiments.

[0022] The above-described embodiments only represent the implementation modes of the utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be pointed out that for those of ordinary skill in the art, without departing from the inventive concept of the utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A steam generator, comprising a soft water tank (1), a water supply tank (2), a steam generator (5) and a gas cylinder (9), wherein the soft water tank (1) supplies soft water to the steam generator (5) through the water supply tank (2), and the steam generator (5) heats the water to generate steam which is then supplied to the equipment through the gas cylinder (9), characterized in that: The steam generator (5) is provided with a water supply outlet pipeline (6) and a water supply inlet pipeline (4); the water supply outlet pipeline (6) is provided with a branch pipe (11) for supplying water to an electric heating evaporator (12); the output end of the electric heating evaporator (12) is connected to the gas cylinder (9).

2. A steam generator according to claim 1, characterized in that: The steam generator (5) is connected to the gas cylinder (9) via a steam output pipeline (8); the electric heating evaporator (12) is connected in parallel to the steam output pipeline (8) via a steam inlet pipeline (13) and a steam outlet pipeline (18); and the steam delivery route is controlled by a steam valve.

3. A steam generator according to claim 1, characterized in that: The liquid phase output end of the electric heating evaporator (12) is connected to the separation tank (15) via a liquid phase pipeline (14); the separation tank (15) is provided with an exhaust pipeline (17) for exhaust and a reflux pipeline (16) for liquid phase reflux; the other end of the reflux pipeline (16) is connected to the water supply tank (2).

4. A steam generator according to claim 3, characterized in that: The liquid phase output port of the gas sub-cylinder (9) is also connected to the return pipeline (16), and a flow valve and a flow meter are provided on the return pipeline (16).

5. A steam generator according to claim 1, characterized in that: The water supply inlet pipeline (4) supplies water to the steam generator (5) through two parallel liquid pumps (3), and valves for switching the two liquid pumps (3) to operate alternately are provided on the pipelines of the two parallel liquid pumps (3).

6. A steam generator according to claim 5, characterized in that: A liquid phase water replenishment pipeline (7) is provided between the water supply outlet pipeline (6) and the water supply inlet pipeline (4) to interconnect the two pipelines, and valves for controlling the liquid phase flow rate are installed on the liquid phase water replenishment pipeline (7), the water supply outlet pipeline (6) and the water supply inlet pipeline (4).

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