Pure steam generator for recovering heat energy of condensed water

Abstract

The utility model discloses a condensate water heat energy recovery pure steam generator, which belongs to the technical field of pure steam generators and comprises a pure steam generator, a heat preservation tank, a drainage tee joint, a first condensate water caching U-shaped pipe, a heat pump ejector and a heating boiler. According to the device, the condensate water buffering U-shaped pipe is designed to temporarily store condensate water generated by the heat exchanger, when the concentrated water discharging valve is opened and the concentrated water is discharged downwards, gas in the pipeline is driven to flow, and under the negative pressure environment in the pipeline, the condensate water in the condensate water buffering U-shaped pipe is driven to cross the limitation of the U-shaped pipe; the high-temperature condensate water flows into the heat preservation tank along with the pure steam generator, then dead steam generated by the pure steam generator passes through the heat pump ejector, liquid in the heat preservation tank is jetted into the heating boiler, heat in the high-temperature condensate water and replaced circulating water can be fully utilized in the process, and therefore energy consumption of the pure steam generator can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of pure steam generators, and in particular to a pure steam generator for recovering condensed water heat. Background Art

[0002] A pure steam generator is a device used to generate clean steam for use in medical, pharmaceutical, food and some high-precision instrument factories. It mainly includes a water supply system, a steam generator, a high-temperature steam supply system and a separator. The heat exchanger in the steam generator will produce high-temperature condensed water during operation, and the circulating water in the steam generator also needs to be replaced regularly during operation. The existing pure steam generator with condensed water heat recovery cannot make good use of the energy in these liquids, resulting in high energy consumption of the pure steam generator. For this reason, the utility model provides a pure steam generator with condensed water heat recovery. Summary of the invention

[0003] The purpose of this application is to make full use of the high-temperature condensed water generated during the operation of the heat exchanger in the steam generator and the heat in the circulating water that is regularly replaced during the operation of the steam generator, thereby reducing energy waste and reducing the energy consumption of the pure steam generator.

[0004] In order to achieve the above objectives, the technical solution adopted in this application is:

[0005] A condensate heat energy recovery pure steam generator, comprising:

[0006] A heat preservation tank, wherein the heat preservation tank is provided with a liquid inlet pipe and a liquid outlet pipe;

[0007] A drainage tee, wherein the drainage tee has a first inflow interface, a second inflow interface, and a third outflow interface, one end of the liquid inlet pipe is connected to the third outflow interface, and the concentrated liquid discharge pipe of the steam generator is connected to the first inflow interface;

[0008] a first condensate cache U-shaped tube, one end of which is connected to the condensate discharge port of the heat exchanger of the steam generator, and the other end of which is connected to the second inflow interface;

[0009] A heat pump ejector, wherein the exhaust steam outlet generated by the pure steam generator is connected to the air inlet of the heat pump ejector, and the liquid outlet pipe of the insulation tank is connected to the side-through interface of the heat pump ejector;

[0010] The heating boiler is a heat exchanger of the steam generator to generate high-temperature steam, and the mixed steam-liquid outlet of the heat pump ejector is fixedly connected to the heating boiler through a pipeline.

[0011] Preferably, the first condensate buffer U-tube comprises a U-shaped tube body, the first end of the U-shaped tube body is connected to the condensate discharge outlet of the heat exchanger, a one-way valve is installed on the first end of the U-shaped tube body, a valve body is installed on the second end of the U-shaped tube body, and a drainage branch pipe is installed on the side of the U-shaped tube body.

[0012] As another preferred embodiment, it also includes:

[0013] a preheating heat exchanger, wherein the preheating heat exchanger is provided with high-temperature steam by exhaust steam generated by a heat exchanger of a steam generator;

[0014] A second condensate cache U-tube, one end of which is connected to the condensate discharge port of the preheating heat exchanger, and the other end of which is connected to the second inlet interface.

[0015] Further preferably, a concentrated water discharge valve is installed on the concentrated liquid discharge pipe of the steam generator.

[0016] As another preferred embodiment, a drain pipe valve assembly is installed on the side of the insulation tank.

[0017] Further preferably, a pressure gauge is installed at the exhaust steam outlet of the pure steam generator.

[0018] Compared with the prior art, the beneficial effects of this application are:

[0019] (1) The utility model designs a condensate buffer U-tube to temporarily store the condensate generated by the heat exchanger. When the concentrated water discharge valve is opened and the concentrated water is discharged downward, the gas inside the pipeline is driven to flow. Under the negative pressure environment inside the pipeline, the condensate inside the condensate buffer U-tube is driven to cross the restriction of the U-tube part and flow into the insulation tank. Then, the exhaust steam generated by the pure steam generator passes through the heat pump ejector to spray the liquid in the insulation tank into the heating boiler. This process can fully utilize the heat in the high-temperature condensate and the replaced circulating water, thereby reducing the energy consumption of the pure steam generator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The schematic diagram of the pure steam generator for condensate heat recovery is shown below;

[0021] Figure 2 This is a schematic diagram of the condensate buffer U-tube of the condensate heat recovery pure steam generator.

[0022] In the figure: 1. Preheating heat exchanger; 2. Heat exchanger; 3. First condensate buffer U-tube; 31. U-tube body; 32. Valve body; 33. Drainage branch pipe; 34. Check valve; 4. Second condensate buffer U-tube; 5. Heat pump ejector; 6. Drainage tee; 7. Condensate discharge valve; 8. Heating boiler; 9. Insulation tank. DETAILED DESCRIPTION

[0023] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0024] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0025] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0026] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0027] like Figure 1-2 The condensate heat energy recovery pure steam generator shown includes: a pure steam generator, an insulation tank 9, a drainage tee 6, a first condensate buffer U-tube 3, a heat pump ejector 5, and a heating boiler 8.

[0028] The insulation tank 9 is provided with a liquid inlet pipe and a liquid outlet pipe, the drainage tee 6 has a first inlet interface, a second inlet interface, and a third outflow interface, one end of the liquid inlet pipe is connected to the third outflow interface, the concentrated liquid discharge pipe of the steam generator is connected to the first inflow interface, one end of the first condensate buffer U-tube 3 is connected to the condensate discharge port of the heat exchanger 2 of the steam generator, the other end of the first condensate buffer U-tube 3 is connected to the second inflow interface, the exhaust steam discharge port generated by the pure steam generator is connected to the air inlet of the heat pump ejector 5, the liquid outlet pipe of the insulation tank 9 is connected to the side passage interface of the heat pump ejector 5, the heating boiler 8 can select an electric heating furnace, the heating boiler 8 generates high-temperature steam for the heat exchanger 2 of the steam generator, and the mixed steam-liquid outlet of the heat pump ejector 5 is fixedly connected to the heating boiler 8 through a pipe.

[0029] The pure steam generator generates high-temperature steam by a heating boiler 8, which is transported to the pure steam generator through a pressure pump, and heat is exchanged in the heat exchanger 2 of the pure steam generator to heat the raw material liquid (purified water) and the circulating liquid. The heated liquid evaporates in the evaporation chamber, and part of the high-temperature condensed water is generated in the heat exchanger 2 during the process. The high-temperature condensed water is temporarily stored by the first condensed water buffer U-shaped tube 3; the impurity content in the circulating water that has been circulated for multiple times is high, which is called "concentrated water". It is necessary to replenish the raw material liquid and discharge part of the "concentrated water" to achieve the dilution effect. When discharging the "concentrated water", the liquid enters from the first inflow interface of the drainage tee 6 and flows out from the third outflow interface. At the same time, a negative pressure is formed at the second inflow interface, so that the condensed water in the first condensed water buffer U-shaped tube 3 is retained and flows into the insulation tank 9 together. The exhaust steam generated by the pure steam generator passes through the heat pump ejector 5 to spray the liquid in the insulation tank 9 into the heating boiler 8. This process can fully utilize the heat in the high-temperature condensed water and the replaced circulating water, thereby reducing the energy consumption of the pure steam generator.

[0030] In one embodiment, the first condensate buffer U-tube 3 includes a U-shaped tube body 31, the U-shaped portion of the U-shaped tube body 31 stores water and has a sealing effect, the first end of the U-shaped tube body 31 is connected to the condensate discharge port of the heat exchanger 2, and a one-way valve 34 is installed on the first end of the U-shaped tube body 31, a valve body 32 is installed on the second end of the U-shaped tube body 31, and a drainage branch pipe 33 is installed on the side of the U-shaped tube body 31.

[0031] In one embodiment, it also includes: a preheating heat exchanger 1 and a second condensate buffer U-tube 4; the preheating heat exchanger 1 is used to preheat the raw material liquid when it enters, which can improve the utilization rate of heat. The preheating heat exchanger 1 is provided with high-temperature steam by the exhaust steam generated by the heat exchanger 2 of the steam generator, and one end of the second condensate buffer U-tube 4 is connected to the condensate discharge port of the preheating heat exchanger 1, and the other end of the second condensate buffer U-tube 4 is connected to the second inflow interface.

[0032] Specifically, a concentrated water discharge valve 7 is installed on the concentrated liquid discharge pipe of the steam generator to facilitate the user to control the discharge of concentrated water.

[0033] Specifically, a drain pipe valve assembly is installed on the side of the heat preservation tank 9 to discharge excess water.

[0034] Specifically, a pressure gauge is installed at the exhaust steam outlet of the pure steam generator to detect the pressure of the exhaust steam.

[0035] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A pure steam generator for condensate heat recovery, It is characterized in that include: A heat preservation tank, wherein the heat preservation tank is provided with a liquid inlet pipe and a liquid outlet pipe; A drainage tee, wherein the drainage tee has a first inflow interface, a second inflow interface, and a third outflow interface, one end of the liquid inlet pipe is connected to the third outflow interface, and the concentrated liquid discharge pipe of the steam generator is connected to the first inflow interface; a first condensate cache U-shaped tube, one end of which is connected to the condensate discharge port of the heat exchanger of the steam generator, and the other end of which is connected to the second inflow interface; A heat pump ejector, wherein the exhaust steam outlet generated by the pure steam generator is connected to the air inlet of the heat pump ejector, and the liquid outlet pipe of the insulation tank is connected to the side-through interface of the heat pump ejector; The heating boiler is a heat exchanger of the steam generator to generate high-temperature steam, and the mixed steam-liquid outlet of the heat pump ejector is fixedly connected to the heating boiler through a pipeline.

2. The condensate heat recovery pure steam generator according to claim 1, Features: The first condensate buffer U-tube includes a U-tube body, the first end of the U-tube body is connected to the condensate discharge outlet of the heat exchanger, a one-way valve is installed on the first end of the U-tube body, a valve body is installed on the second end of the U-tube body, and a drainage branch is installed on the side of the U-tube body.

3. The condensed water heat recovery pure steam generator according to claim 1 or 2, It is characterized in that Also includes: a preheating heat exchanger, wherein the preheating heat exchanger is provided with high-temperature steam by exhaust steam generated by a heat exchanger of a steam generator; A second condensate cache U-tube, one end of which is connected to the condensate discharge port of the preheating heat exchanger, and the other end of which is connected to the second inlet interface.

4. The condensate heat recovery pure steam generator according to claim 1, Features: A concentrated water discharge valve is installed on the concentrated liquid discharge pipeline of the steam generator.

5. The condensed water heat energy recovery pure steam generator according to claim 1, Features: A liquid discharge pipe valve assembly is installed on the side of the heat preservation tank.

6. The condensed water heat energy recovery pure steam generator according to claim 1, Features: A pressure gauge is installed at the exhaust steam outlet of the pure steam generator.

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