Discharged steam condensation recovery device

Abstract

The utility model provides a discharged steam condensation recovery device, relates to the technical field of steam recovery, and solves the problem that steam is directly discharged into the atmosphere due to the mode that a drain flash tank above an existing drain tank is led to the atmosphere to exhaust steam, and the phenomenon of steam-water waste exists. The device comprises a drain tank and a drain flash tank, a water outlet of the drain flash tank is connected with a water inlet of the drain tank, the drain flash tank is connected with a low-pressure section drain inlet pipe and a high-pressure section drain inlet pipe, the drain flash tank is further connected with an exhaust pipe, and the device further comprises a steam condensation recovery pipe connected to the exhaust pipe. The steam condensation recovery pipe is connected with a condensation assembly used for condensing steam in the steam condensation recovery pipe into water, and a water outlet of the steam condensation recovery pipe is connected with a drain tank through a drain pipe. The steam water recovery device has the advantages that steam of the steam condensation recovery pipe is condensed into water, then the water flows back to the drainage box to be collected, waste steam water recovery is achieved, and water resources are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of steam recovery, in particular to a discharge steam condensation recovery device. Background Art

[0002] In a waste incineration power plant, the steam turbine drain box has water source from the high-pressure section drain and low-pressure section drain of the boiler primary air heater, which is led to the drain expansion tank above the drain box. The drain has a higher water temperature and carries some steam. The actual measured drain temperature is about 230°C. The water is discharged to the drain box through the bottom pipe of the expansion tank, and the remaining steam is discharged into the air into the atmosphere through the side pipe of the expansion tank, resulting in a waste of steam and water. Currently, the exhaust steam is not collected in the market. Utility Model Content

[0003] The utility model aims to solve the problem that the upper drain expansion container of the existing drain box is led to the atmosphere to exhaust steam, and this method directly discharges steam into the atmosphere, resulting in a waste of steam and water.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A steam condensation recovery device, comprising a drain tank and a drain expansion tank, wherein the water outlet of the drain expansion tank is connected to the water inlet of the drain tank, the drain expansion tank is connected to a low-pressure section drain inlet pipe and a high-pressure section drain inlet pipe, and the drain expansion tank is also connected to an exhaust pipe, characterized in that: it also includes a steam condensation recovery pipe connected to the exhaust pipe, the steam condensation recovery pipe is connected to a condensation assembly for condensing steam in the steam condensation recovery pipe into water, and the water outlet of the steam condensation recovery pipe is connected to the drain tank through a drain pipe;

[0006] The condensation component includes a cooling water inlet pipe for injecting cooling water, and the cooling water inlet pipe is branched into a plurality of cooling water outlet pipes, and the plurality of cooling water outlet pipes are all extended into the steam condensation recovery pipe and are connected with cooling water nozzles, and the plurality of cooling water nozzles are evenly distributed in the steam condensation recovery pipe.

[0007] A further improvement is that: four groups of cooling water outlet pipes and cooling water nozzles are provided.

[0008] A further improvement is that: the cooling water nozzle is provided with a plurality of cooling water nozzles.

[0009] A further improvement is that at least three cooling water nozzles are provided.

[0010] A further improvement is that: the cooling water outlet pipe is provided with a corresponding regulating valve.

[0011] A further improvement is that the lower water outlet of the hydrophobic expansion container is connected to the upper water inlet of the hydrophobic tank through a pipeline.

[0012] A further improvement is that the drain expansion tank is connected to the low-pressure section drain of the boiler primary air heater through the low-pressure section drain inlet pipe, and the drain expansion tank is connected to the high-pressure section drain of the boiler primary air heater through the high-pressure section drain inlet pipe.

[0013] A further improvement is that the steam condensation recovery pipe is a U-shaped pipe.

[0014] A further improvement is that the U-shaped tube is a 304 stainless steel tube.

[0015] A further improvement is that the hydrophobic expansion tank 2 is also connected to a demineralized water replenishment pipe.

[0016] Compared with the existing technology, the above technical solution has the following beneficial effects:

[0017] By adding a steam condensation recovery pipe and cooperating with a condensation component to condense the steam in the steam condensation recovery pipe into water, and then returning it to the drain tank for collection, the steam can be prevented from being discharged into the atmosphere, the waste of steam and water can be recovered, and water resources can be saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of the structure of the steam condensation recovery pipe 7 and the condensation assembly 9 in the utility model;

[0021] Figure 3 It is a schematic diagram of the exhaust structure of the existing drain box and drain expansion tank.

[0022] Explanation of the reference numerals: drain tank 1, drain expansion tank 2, low-pressure section drain inlet pipe 3, high-pressure section drain inlet pipe 4, desalted water make-up pipe 5, exhaust pipe 6, steam condensate recovery pipe 7, drain pipe 8, condensation assembly 9, cooling water inlet pipe 91, cooling water nozzle 92, cooling water nozzle 93, cooling water outlet pipe 94. DETAILED DESCRIPTION

[0023] See also Figure 1-Figure 3As shown, the technical solution adopted in this specific embodiment is: a discharged steam condensation recovery device, comprising a drain tank 1 and a drain expansion tank 2, the water outlet of the drain expansion tank 2 is connected to the water inlet of the drain tank 1, the drain expansion tank 2 is connected to a low-pressure section drain inlet pipe 3 and a high-pressure section drain inlet pipe 4, the drain expansion tank 2 is also connected to an exhaust pipe 6, and also includes a steam condensation recovery pipe 7 connected to the exhaust pipe 6, the steam condensation recovery pipe 7 is connected to a condensation component 9 for condensing the steam in the steam condensation recovery pipe 7 into water, and the water outlet of the steam condensation recovery pipe 7 is connected to the drain tank 1 through a drain pipe 8;

[0024] The condensation component 9 includes a cooling water inlet pipe 91 for injecting cooling water, and the cooling water inlet pipe 91 is branched into a plurality of cooling water outlet pipes 94, and the plurality of cooling water outlet pipes 94 are all extended into the steam condensation recovery pipe 7 and are connected to cooling water nozzles 92, and the plurality of cooling water nozzles 92 are evenly distributed in the steam condensation recovery pipe 7.

[0025] The water source of the cooling water inlet pipe 91 can be connected to a desalted jellyfish pipe or a condensate outlet main pipe.

[0026] Wherein, corresponding valves are provided on the cooling water inlet pipe 91 and the drain pipe.

[0027] There are four groups of cooling water outlet pipes 94 and cooling water nozzles 93 .

[0028] Wherein, a plurality of cooling water nozzles 93 are arranged on the cooling water nozzle 92 .

[0029] There are at least three cooling water nozzles 93 .

[0030] Wherein, the cooling water outlet pipe 94 is provided with a corresponding regulating valve.

[0031] The lower water outlet of the hydrophobic expansion container 2 is connected to the upper water inlet of the hydrophobic tank 1 through a pipeline.

[0032] Among them, the drain expansion tank 2 is connected to the low-pressure section drain of the boiler primary air heater through the low-pressure section drain inlet pipe 3, and the drain expansion tank 2 is connected to the high-pressure section drain of the boiler primary air heater through the high-pressure section drain inlet pipe 4.

[0033] Wherein, the steam condensation recovery pipe 7 is a U-shaped pipe.

[0034] Wherein, the U-shaped tube is a 304 stainless steel tube.

[0035] The hydrophobic expansion tank 2 is also connected to a demineralized water replenishment pipe 5 .

[0036] The working principle of the utility model is as follows: when in use, the high-pressure section drain and the low-pressure section drain of the boiler primary air heater are drained into the drain expansion tank through the high-pressure section drain inlet pipe and the low-pressure section drain inlet pipe, wherein the water is discharged to the drain tank through the bottom pipe of the expansion tank, and a steam condensation recovery pipe is installed on the exhaust pipe of the drain expansion tank. The steam condensation recovery pipe adopts a U-shaped tube made of stainless steel 304, and a nozzle is installed in the U-shaped tube. A plurality of nozzles are installed on the nozzle, and a cooling water outlet pipe is connected to the nozzle. The cooling water outlet pipe is connected to the cooling water source through the cooling water inlet pipe, and a regulating valve is provided on each cooling water outlet pipe to realize independent flow regulation. The nozzles are evenly distributed in the U-shaped tube, and the cooling water is sprayed from the nozzle and atomized to evenly cover the channel in the tube, and the water mist sprayed by the nozzle is mixedly cooled on the steam passing through the U-shaped pipe, so that the steam is quickly condensed into water, and the condensed water is transported to the drain tank through the drainage pipe at the bottom of the U-shaped tube to complete the collection.

[0037] The above shows and describes the basic principle and main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents. Anything not described in detail in the utility model is a well-known technology of those skilled in the art.

Claims

1. A steam condensation recovery device, comprising a drain tank and a drain expansion tank, wherein the water outlet of the drain expansion tank is connected to the water inlet of the drain tank, the drain expansion tank is connected to a low-pressure section drain inlet pipe and a high-pressure section drain inlet pipe, and the drain expansion tank is also connected to an exhaust pipe, characterized in that: It also includes a steam condensation recovery pipe connected to the exhaust pipe, the steam condensation recovery pipe is connected to a condensation assembly for condensing the steam in the steam condensation recovery pipe into water, and the water outlet of the steam condensation recovery pipe is connected to a drain tank through a drain pipe; The condensation component includes a cooling water inlet pipe for injecting cooling water, and the cooling water inlet pipe is branched into a plurality of cooling water outlet pipes, and the plurality of cooling water outlet pipes are all extended into the steam condensation recovery pipe and are connected with cooling water nozzles, and the plurality of cooling water nozzles are evenly distributed in the steam condensation recovery pipe.

2. The exhaust steam condensation recovery device according to claim 1, characterized in that: The cooling water outlet pipes and cooling water nozzles are provided in four groups.

3. The exhaust steam condensation recovery device according to claim 2, characterized in that: The cooling water nozzle is provided with a plurality of cooling water nozzles.

4. The exhaust steam condensation recovery device according to claim 3, characterized in that: At least three cooling water nozzles are provided.

5. The exhaust steam condensation recovery device according to claim 4, characterized in that: The cooling water outlet pipes are all provided with corresponding regulating valves.

6. The exhaust steam condensation recovery device according to claim 1, characterized in that: The lower water outlet of the hydrophobic expansion container is connected to the upper water inlet of the hydrophobic tank through a pipeline.

7. The exhaust steam condensation recovery device according to claim 1, characterized in that: The drain expansion tank is connected to the low-pressure section drain of the boiler primary air heater through the low-pressure section drain inlet pipe, and the drain expansion tank is connected to the high-pressure section drain of the boiler primary air heater through the high-pressure section drain inlet pipe.

8. The exhaust steam condensation recovery device according to claim 1, characterized in that: The steam condensation recovery pipe is a U-shaped pipe; the U-shaped pipe is a 304 stainless steel pipe.

9. The exhaust steam condensation recovery device according to claim 1, characterized in that: The hydrophobic expansion container is also connected with a demineralized water replenishment pipe.

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