Steam condenser condensate heat energy recovery device

Abstract

The application relates to the technical field of heat energy recovery devices, in particular to a steam condenser condensate heat energy recovery device. The temperature of the condensate is detected by a temperature measuring meter. If the temperature meets the requirements of boiler circulation, a first control valve is opened and a second control valve is closed, so that the condensate in the box flows into a boiler circulation return pipe from a first drain pipe and finally returns to the boiler for use. If the temperature of the condensate does not meet the use requirements of the boiler, the second control valve is opened and the first control valve is closed, so that the condensate in the box enters a heat recovery mechanism from a second drain pipe to recover and utilize the waste heat, so as to avoid heat waste. The auxiliary accessories are arranged to clean the scale and impurities adhered to the outer wall of the heat conduction pipe, so as to ensure the recovery and utilization efficiency of the heat conduction pipe for the waste heat in the condensate.

Description

Technical Field

[0001] This invention relates to the field of heat energy recovery devices, and in particular to a heat energy recovery device for condensate from a steam condenser. Background Technology

[0002] A document with publication number CN212339199U discloses a clean and efficient boiler system for recovering and utilizing thermal energy. The system comprises a burner, boiler body, economizer, air preheater, condenser, chimney, fan, and water tank. The boiler body's flue gas outlet is connected to the economizer; the economizer's gas-side outlet is connected to the air preheater; the air preheater's gas-side outlet is connected to the condenser; and the condenser's gas-side outlet is connected to the chimney, which discharges the flue gas into the atmosphere. The air preheater is a gas-to-gas heat exchanger. The condenser is a gas-to-liquid heat exchanger; its gas side is the flue gas flow channel, and its liquid side is a heat exchange pipe connected to the water tank via a pipe and a circulating pump. Both the economizer and the condenser employ a finned tube structure.

[0003] In the above scheme, the condensate produced by the boiler condenser is directly discharged; however, the condensate also contains heat. In order to improve the efficiency of heat recovery and utilization, the existing technology generally recirculates the condensate back to the boiler for reuse. In this process, if the temperature of the condensate does not meet the heat filtration requirements, it is equivalent to adding "cold water", which puts a burden on the boiler's operation; if it is directly discharged, it will cause heat loss and affect its heat recovery work.

[0004] Therefore, this invention proposes a steam condenser condensate heat energy recovery device to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a steam condenser condensate heat energy recovery device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a steam condenser condensate heat energy recovery device, comprising a housing and a support leg disposed at the bottom of the housing, and a condensate inlet pipe disposed at the top of the housing;

[0007] A first drain pipe is provided on one side of the housing and a second drain pipe is provided on the corresponding other side. The first drain pipe is connected to a first control valve, and the first control valve is also connected to the boiler circulation return pipe.

[0008] A temperature measuring meter is installed on one side of the enclosure to detect the temperature of the condensate in the enclosure;

[0009] The second drain pipe is connected to the second control valve, which is also connected to the heat recovery mechanism.

[0010] Preferably, the heat recovery mechanism includes a storage cylinder and an inlet pipe and an outlet pipe disposed on the side wall of the storage cylinder;

[0011] A top cover is bolted to the top of the storage cylinder, and a bottom cover is bolted to the bottom of the storage cylinder. An input pipe is provided on one side of the top cover, and an output pipe is provided at the bottom of the bottom cover.

[0012] Preferably, a heat conduction component is provided in the storage cylinder;

[0013] The heat conduction assembly includes a heat-conducting pipe and load-bearing end caps disposed at both ends of the heat-conducting pipe.

[0014] Preferably, auxiliary accessories are also provided in the storage cylinder;

[0015] The auxiliary accessory includes a telescopic control cylinder located on the top of the top cover, one end of which extends through the bearing end cap at the top of the heat-conducting pipe.

[0016] Preferably, a loading plate is also fixedly installed at the bottom end of the telescopic control cylinder;

[0017] Bearing strips are fixedly installed at equal intervals on the side of the loading plate, and cleaning collars are fixedly installed at equal intervals on the bearing strips.

[0018] Preferably, the cleaning collar is movably fitted onto the heat-conducting pipe fitting;

[0019] The number of cleaning rings and heat-conducting pipe fittings is the same, with one cleaning ring fitted on each heat-conducting pipe fitting.

[0020] Preferably, the inner wall of the cleaning collar is adapted to fit the outer wall of the heat-conducting pipe fitting.

[0021] Preferably, an auxiliary component is also provided in the cleaning collar;

[0022] The auxiliary component includes a receiving groove located at the top of the cleaning collar.

[0023] Preferably, the receiving tank is annular, and flow holes are uniformly provided on the inner wall of the receiving tank near the heat-conducting pipe.

[0024] Preferably, an auxiliary scraper ring is fixedly provided on the top of the inner wall of the receiving tank near the heat-conducting pipe;

[0025] The auxiliary scraper ring is fitted to the inner wall of the heat-conducting pipe.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] The steam condenser condensate heat energy recovery device designed in this invention includes a housing and support legs located at the bottom of the housing, and a condensate inlet pipe located at the top of the housing; a first drain pipe is located on one side of the housing and a second drain pipe is located on the corresponding other side. The first drain pipe is connected to a first control valve, which is also connected to a boiler circulation return pipe; a temperature measuring instrument is located on one side of the housing for detecting the temperature of the condensate in the housing; the second drain pipe is connected to a second control valve, which is also connected to a heat recovery mechanism.

[0028] The condensate flowing from the condenser enters the tank through the condensate inlet pipe. The temperature of the condensate is detected by a temperature measuring instrument. If the temperature meets the requirements for boiler circulation, the first control valve is opened and the second control valve is closed, so that the condensate in the tank flows from the first drain pipe into the boiler circulation return pipe and finally returns to the boiler for use, thus recycling the heat in the condensate.

[0029] If the temperature of the condensate does not meet the boiler's operating requirements, the second control valve is opened and the first control valve is closed, allowing the condensate in the tank to enter the heat recovery mechanism through the second drain pipe for waste heat recovery and utilization, thus avoiding heat waste; that is, the waste heat in the condensate is recovered through the heat-conducting pipes in the heat recovery mechanism.

[0030] Based on this, this solution uses auxiliary accessories to clean scale and other impurities adhering to the outer wall of the heat-conducting pipe. Specifically, a telescopic control cylinder drives the cleaning ring to move up and down, and the cleaning ring cleans the scale accumulated on the outer wall of the heat-conducting pipe, thus ensuring the efficient recovery and utilization of residual heat in the condensate from the heat-conducting pipe. Attached Figure Description

[0031] Figure 1 This is a schematic diagram on the right side of the structure of the steam condenser condensate heat energy recovery device of the present invention;

[0032] Figure 2 This is a schematic diagram of the left side of the structure of the steam condenser condensate heat energy recovery device of the present invention;

[0033] Figure 3 This is a partial cross-sectional view of the internal structure connection of the storage cylinder of the present invention;

[0034] Figure 4 for Figure 3 Enlarged schematic diagram of the structural connection at point A;

[0035] Figure 5 This is a schematic diagram of the auxiliary component structure of the present invention;

[0036] Figure 6 for Figure 5 Enlarged schematic diagram of the structural connection at point B.

[0037] In the diagram: 1. Casing body; 2. Condensate inlet pipe; 3. First drain pipe; 4. Second drain pipe; 5. First control valve; 6. Second control valve; 7. Boiler circulation return pipe; 8. Temperature gauge; 901. Storage cylinder; 902. Inlet pipe; 903. Outlet pipe; 904. Top cover; 905. Inlet pipe; 906. Bottom cover; 907. Outlet pipe; 908. Bearing end cover; 909. Heat conduction fitting; 1001. Telescopic control cylinder; 1002. Loading plate; 1003. Bearing strip; 1004. Cleaning collar; 1101. Receiving tank; 1102. Flow hole; 1103. Auxiliary scraper ring. Detailed Implementation

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below. All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention.

[0039] Example 1: Please refer to Figures 1-6 A steam condenser condensate heat recovery device includes a housing 1 and a support leg set at the bottom of the housing 1, and a condensate inlet pipe 2 is also set at the top of the housing 1.

[0040] A first drain pipe 3 is provided on one side of the housing 1, and a second drain pipe 4 is provided on the corresponding other side. The first drain pipe 3 is connected to a first control valve 5, and the first control valve 5 is also connected to a boiler circulation return pipe 7. A temperature measuring instrument 8 is provided on one side of the housing 1 for detecting the temperature of the condensate in the housing 1. The second drain pipe 4 is connected to a second control valve 6, and the second control valve 6 is also connected to a heat recovery mechanism.

[0041] According to the appendix Figure 1 -Appendix Figure 4 As shown, the condensate flowing from the condenser first enters the housing 1 through the condensate inlet pipe 2. The temperature of the condensate is detected by the temperature measuring instrument 8. If the temperature meets the requirements for boiler circulation, the first control valve 5 is opened and the second control valve 6 is closed, so that the condensate in the housing 1 flows from the first drain pipe 3 into the boiler circulation return pipe 7, and finally returns to the boiler for use, thus recycling the heat in the condensate.

[0042] However, if the temperature of the condensate does not meet the boiler's operating requirements, the second control valve 6 is opened and the first control valve 5 is closed, so that the condensate in the housing 1 enters the heat recovery mechanism through the second drain pipe 4 to recover and utilize the waste heat, thereby avoiding heat waste.

[0043] The waste heat in the condensate is recovered through the heat-conducting pipe 909 in the heat recovery mechanism. On this basis, the solution uses auxiliary accessories to clean the scale and other impurities adhering to the outer wall of the heat-conducting pipe 909 to ensure the efficiency of the heat-conducting pipe 909 in recovering and utilizing the waste heat in the condensate.

[0044] Combined with the appendix Figure 3 -Appendix Figure 5 As shown, the heat recovery mechanism includes a storage cylinder 901 and an inlet pipe 902 and an outlet pipe 903 disposed on the side wall of the storage cylinder 901; a top cover 904 is bolted to the top of the storage cylinder 901, and a bottom cover 906 is bolted to the bottom of the storage cylinder 901; an input pipe 905 is disposed on one side of the top cover 904, and an output pipe 907 is disposed at the bottom of the bottom cover 906; a heat conduction assembly is disposed in the storage cylinder 901; the heat conduction assembly includes a heat-conducting pipe 909 and bearing end caps 908 disposed at both ends of the heat-conducting pipe 909.

[0045] The inlet pipe 902 inputs condensate into the storage tank 901, and then the heat is conducted and recovered from the condensate through the heat-conducting pipe 909. Finally, the condensate flows out from the outlet pipe 903 on one side of the storage tank 901. During this process, the heat-conducting pipe 909 conducts heat to the condensate, and the conducted heat can be transferred to the medium passing through the heat-conducting pipe 909. The medium can be a gas or a liquid. The medium enters from the inlet pipe 905 on the top cover 904, then passes through each heat-conducting pipe 909, and finally flows out from the outlet pipe 907 at the bottom of the bottom cover 906.

[0046] During prolonged operation, scale and other impurities will accumulate on the outer wall of the heat pipe 909, which will negatively affect the heat transfer efficiency of the heat pipe 909 and thus hinder the heat recovery in the condensate.

[0047] Therefore, this solution also includes auxiliary accessories in the storage cylinder 901; these auxiliary accessories include a telescopic control cylinder 1001 located on the top of the top cover 904, one end of which passes through the bearing end cap 908 at the top of the heat-conducting pipe 909; a loading plate 1002 is fixedly installed at the bottom of the telescopic control cylinder 1001; bearing strips 1003 are fixedly installed at equal intervals on the side of the loading plate 1002, and cleaning collars 1004 are fixedly installed at equal intervals on the bearing strips 1003; the cleaning collars 1004 are movably fitted onto the heat-conducting pipe 909; the number of cleaning collars 1004 and heat-conducting pipe 909 is the same, with one cleaning collar 1004 fitted onto each heat-conducting pipe 909; wherein the inner wall of the cleaning collar 1004 is adapted to fit and conform to the outer wall of the heat-conducting pipe 909.

[0048] Here, the telescopic control cylinder 1001 drives the cleaning collar 1004 to move up and down. The cleaning collar 1004 cleans the scale accumulated on the outer wall of the heat conduction pipe 909, or it is used periodically to clean the auxiliary accessories before the impurities adhering to the outer wall of the heat conduction pipe 909 form hard scale.

[0049] Combined with the appendix Figure 6 As shown, this solution also includes an auxiliary component in the cleaning ring 1004; the auxiliary component includes a receiving groove 1101 disposed on the top of the cleaning ring 1004; the receiving groove 1101 is annular, and flow holes 1102 are uniformly disposed in the inner wall of the receiving groove 1101 near the heat-conducting pipe 909; an auxiliary scraper ring 1103 is fixedly disposed on the top of the inner wall of the receiving groove 1101 near the heat-conducting pipe 909; the auxiliary scraper ring 1103 is fitted against the inner wall of the heat-conducting pipe 909.

[0050] This solution provides a receiving groove 1101 and an auxiliary scraper ring 1103 at the top of the cleaning ring 1004. The auxiliary scraper ring 1103 provides an auxiliary cleaning effect for impurities. When the cleaning ring 1004 is running from bottom to top through the telescopic control cylinder 1001, the auxiliary scraper ring 1103 cleans the impurities adhering to the outer wall of the heat-conducting pipe 909.

[0051] Based on this, the solution also provides flow holes 1102 evenly arranged in the receiving tank 1101. When condensate enters the storage cylinder 901, if the storage cylinder 901 is not full of condensate, that is, when the condensate level is low, the heat-conducting pipe 909 located at the upper position cannot contact the condensate. Therefore, during the upward movement of the cleaning ring 1004, some condensate will be driven by the receiving tank 1101 and will come into contact with the heat-conducting pipe 909 located at the upper position through the flow holes 1102, which has a positive effect on improving the heat recovery effect of condensate.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steam condenser condensate heat recovery device, characterized in that: It includes a housing (1) and a support leg set at the bottom of the housing (1). A condensate inlet pipe (2) is also set at the top of the housing (1). A first drain pipe (3) is provided on one side of the housing (1) and a second drain pipe (4) is provided on the corresponding other side. The first drain pipe (3) is connected to the first control valve (5), and the first control valve (5) is also connected to the boiler circulation return pipe (7). A temperature measuring instrument (8) is installed on one side of the box (1) to detect the temperature of the condensate in the box (1); The second drain pipe (4) is connected to the second control valve (6), which is also connected to the heat recovery mechanism.

2. The steam condenser condensate heat recovery device according to claim 1, characterized in that: The heat recovery mechanism includes a storage tank (901) and an inlet pipe (902) and an outlet pipe (903) disposed on the side wall of the storage tank (901). A top cover (904) is fixed to the top of the storage cylinder (901) by bolts, and a bottom cover (906) is fixed to the bottom of the storage cylinder (901) by bolts. An input pipe (905) is provided on one side of the top cover (904), and an output pipe (907) is provided at the bottom of the bottom cover (906).

3. The steam condenser condensate heat recovery device according to claim 2, characterized in that: A heat conduction assembly is provided in the storage cylinder (901); The heat conduction assembly includes a heat conduction pipe (909) and load-bearing end caps (908) disposed at both ends of the heat conduction pipe (909).

4. The steam condenser condensate heat recovery device according to claim 3, characterized in that: Auxiliary accessories are also provided in the storage cylinder (901); The auxiliary accessory includes a telescopic control cylinder (1001) located on top of the top cover (904), one end of which extends through the bearing end cap (908) at the top of the heat-conducting pipe (909).

5. The steam condenser condensate heat recovery device according to claim 4, characterized in that: A loading plate (1002) is also fixedly installed at the bottom end of the telescopic control cylinder (1001). A bearing strip (1003) is fixedly provided at equal intervals on the side of the loading plate (1002), and a cleaning collar (1004) is fixedly provided at equal intervals on the bearing strip (1003).

6. The steam condenser condensate heat recovery device according to claim 5, characterized in that: The cleaning collar (1004) is movably fitted onto the heat-conducting pipe fitting (909); The number of cleaning rings (1004) and heat-conducting pipes (909) is the same, and a cleaning ring (1004) is fitted on one heat-conducting pipe (909).

7. The steam condenser condensate heat recovery device according to claim 6, characterized in that: The inner wall of the cleaning collar (1004) is adapted to fit the outer wall of the heat-conducting pipe fitting (909).

8. The steam condenser condensate heat recovery device according to claim 1, characterized in that: An auxiliary component is also provided in the cleaning collar (1004); The auxiliary component includes a receiving groove (1101) disposed on top of the cleaning collar (1004).

9. The steam condenser condensate heat recovery device according to claim 8, characterized in that: The receiving tank (1101) is annular, and flow holes (1102) are uniformly provided on the inner wall of the receiving tank (1101) near the heat-conducting pipe (909).

10. The steam condenser condensate heat recovery device according to claim 8, characterized in that: An auxiliary scraper ring (1103) is fixedly installed on the top of the inner wall of the receiving tank (1101) near the heat-conducting pipe (909). The auxiliary scraper ring (1103) is fitted to the inner wall of the heat-conducting pipe (909).

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