Heat exchanger temperature control and condensate drain device

Abstract

The application discloses a heat exchanger temperature control and condensate water discharging device, which comprises a heat exchanger, a hot air duct is communicated with the bottom of the heat exchanger, a temperature measuring element is installed outside the hot air duct, and an insulation mechanism is fixedly connected to the inside of the heat exchanger through bolts, and the application relates to the technical field of steam heat exchange. The heat exchanger temperature control and condensate water discharging device can be used for the following purposes: when the temperature of the lower layer inside the heat exchanger is too low, the liquid inside the steam pipeline of the heat exchanger inlet freezes, and the liquid cannot flow away through the steam pipeline of the heat exchanger inlet, a programmable controller controls the temperature measuring element to measure the temperature inside the hot air duct, the hot air blown out by the hot air duct melts the ice inside the steam pipeline of the heat exchanger inlet, the liquid inside the steam pipeline of the heat exchanger inlet flows into the inside of a collecting tower through a condensate water bypass pipeline, and thus the ice inside the heat exchanger can be melted through the hot air duct, and the pipeline inside the heat exchanger is prevented from being damaged.

Description

Technical Field

[0001] This invention relates to the field of steam heat exchange technology, specifically to a heat exchanger temperature control and condensate discharge device. Background Technology

[0002] A steam heat exchanger is a device that uses steam as a heat source to heat water or air. It can fully displace a large amount of calorific value from the steam to heat water or air.

[0003] Currently, the indoor air conditioning units in the factory lack corresponding steam control, relying on manual butterfly valves to control steam flow and regulate air supply temperature. This results in unstable air supply temperature; when the indoor temperature rises, the valve opening decreases, leading to a drop in steam pressure within the heat exchanger, increased condensate volume, and reduced draining from the steam trap. In winter, the low temperature of the natural air causes the condensate in the heat exchanger to easily freeze, damaging the heat exchanger pipelines. Therefore, this paper proposes a heat exchanger temperature control and condensate drainage device. This device avoids the drawbacks of unstable air supply temperature and easy condensate accumulation in pipelines caused by manual steam valve control, improving temperature control accuracy and stability, maintaining a constant temperature in the factory, enhancing comfort, effectively solving the condensate drainage problem, and improving equipment reliability. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a heat exchanger temperature control and condensate drainage device, which solves the problem that condensate in the heat exchanger is prone to freezing and damaging heat exchanger pipelines when the natural wind temperature is low in winter.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a heat exchanger temperature control and condensate drainage device, comprising a heat exchanger, wherein a steam pipeline assembly is connected to the top left side of the heat exchanger via a pipe, a condensate pipeline assembly is connected to the bottom right side of the heat exchanger via a pipe, a hot air duct is connected to the bottom of the heat exchanger, a temperature sensing element is installed on the outside of the hot air duct, an insulation mechanism is fixedly connected to the inside of the heat exchanger via bolts, and a drainage mechanism is fixedly connected to the front side of the heat exchanger via bolts.

[0008] The present invention is further configured such that: the heat preservation mechanism includes a heat preservation frame, a replacement plate is slidably connected to the front side of the heat preservation frame, heat preservation cotton is fixedly connected to the front side of the replacement plate, a locking block is fixedly connected to the top and bottom of the front side of the heat preservation frame, a sliding groove is provided on the top and bottom of the rear side of the replacement plate, and the inside of the sliding groove is slidably connected to the outside of the locking block, and a placement groove is provided on the front side of the heat preservation cotton.

[0009] The present invention is further configured such that: the drainage mechanism includes a drainage frame, a movable groove is provided on the front side of the drainage frame, and a squeezing block is slidably connected inside the movable groove; a baffle is fixedly connected to the front side of the squeezing block; a telescopic rod is fixedly connected to the front side of the drainage frame and the front side of the baffle via a fixing block; the telescopic end of the telescopic rod is fixedly connected to the front side of the baffle; and a storage compartment is fixedly connected to the bottom of the drainage frame.

[0010] The present invention is further configured such that: the steam pipeline assembly includes a main steam pipeline and a steam bypass pipeline; a first manual steam butterfly valve, a steam regulating valve and a second manual steam butterfly valve are sequentially connected in series from left to right on the outside of the main steam pipeline; and a third manual steam butterfly valve is provided on the steam bypass pipeline.

[0011] The present invention is further configured such that: the condensate pipeline assembly includes a main condensate pipeline and a condensate bypass pipeline; a manual condensate gate valve, a pneumatic butterfly valve, and a check valve are installed sequentially from left to right on the outside of the condensate bypass pipeline; and a float-type steam trap is installed on the outside of the main condensate pipeline.

[0012] The invention is further configured such that: a heat exchanger inlet steam pipeline is installed inside the heat exchanger, the heat exchanger inlet steam pipeline is bent into four layers, and a temperature detection element is installed on the left side of the first layer and a liquid level detection element is installed on the left side of the second layer from bottom to top of the heat exchanger inlet steam pipeline.

[0013] The present invention is further configured such that the interior of the placement tank is in contact with the exterior of the heat exchanger inlet steam pipeline.

[0014] The invention is further configured such that: a drain hole is provided at the bottom of the heat exchanger and above the storage compartment, the storage compartment being located on the rear side of the hot air duct.

[0015] (III) Beneficial Effects

[0016] This invention provides a heat exchanger temperature control and condensate drainage device. It has the following beneficial effects:

[0017] (1) The heat exchanger temperature control and condensate discharge device, when the temperature of the lower layer inside the heat exchanger is too low, causing the liquid inside the heat exchanger inlet steam pipeline to freeze and prevent the liquid from flowing out through the heat exchanger inlet steam pipeline, the programmable controller controls the temperature measuring element to measure the temperature inside the hot air duct, so that the hot air blown out of the hot air duct melts the ice inside the heat exchanger inlet steam pipeline, and allows the liquid inside the heat exchanger inlet steam pipeline to flow into the collection tower through the condensate bypass pipeline. In this way, the ice inside the heat exchanger can be melted through the hot air duct, preventing damage to the pipeline inside the heat exchanger.

[0018] (2) The heat exchanger temperature control and condensate discharge device opens the heat exchanger by rotating the bolts at the top and bottom of the insulation frame. The replacement plate with insulation cotton is then secured to the outside of the insulation frame through the sliding groove and the locking block. The insulation frame with insulation cotton is then placed inside the heat exchanger. The bolts at the top and bottom of the insulation frame are rotated to fix the insulation frame to the heat exchanger. In this way, the heat blown out of the hot air duct can be insulated by the insulation cotton, reducing the heat loss inside the heat exchanger, improving the melting efficiency of the liquid, and thus improving the condensate discharge efficiency.

[0019] (3) The heat exchanger temperature control and condensate discharge device generates liquid outside the heat exchanger inlet steam pipeline. The insulation cotton absorbs the liquid outside the heat exchanger inlet steam pipeline. After the insulation cotton absorbs the liquid outside the heat exchanger inlet steam pipeline for a period of time, the telescopic rod extends. The telescopic rod pushes the extrusion block to move through the baffle. The extrusion block extrudes the insulation cotton, causing the liquid inside the insulation cotton to flow into the storage chamber through the drain hole. In this way, the liquid inside the insulation cotton can be discharged through the extrusion block, which increases the heat output of the hot air duct protected by the insulation cotton and improves the melting efficiency of the liquid. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the thermal insulation mechanism of the present invention;

[0022] Figure 3 This is a schematic diagram of the drainage mechanism of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the steam pipeline assembly of the present invention;

[0024] Figure 5 This is a schematic diagram of the condensate pipeline assembly of the present invention;

[0025] Figure 6 This is a schematic diagram of the internal structure of the heat exchanger of the present invention.

[0026] In the diagram: 1. Heat exchanger; 2. Steam pipeline assembly; 3. Condensate pipeline assembly; 4. Hot air duct; 5. Temperature sensing element; 6. Insulation mechanism; 7. Drainage mechanism; 8. Insulation frame; 9. Replacement plate; 10. Insulation cotton; 11. Clip; 12. Sliding groove; 13. Placement groove; 14. Drainage frame; 15. Moving groove; 16. Extrusion block; 17. Baffle; 18. Telescopic rod; 19. Storage compartment; 20. Main steam pipeline. ; 21. Steam bypass line; 22. First manual steam butterfly valve; 23. Steam regulating valve; 24. Second manual steam butterfly valve; 25. Third manual steam butterfly valve; 26. Condensate main line; 27. Condensate bypass line; 28. Condensate manual gate valve; 29. ​​Pneumatic butterfly valve; 30. Check valve; 31. Float-type steam trap; 32. Heat exchanger inlet steam line; 33. Temperature detection element; 34. Liquid level detection element. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figure 1-6 The present invention provides a technical solution: a heat exchanger temperature control and condensate drainage device, including a heat exchanger 1, a steam pipeline assembly 2 connected to the top left side of the heat exchanger 1 via a pipe, a condensate pipeline assembly 3 connected to the bottom right side of the heat exchanger 1 via a pipe, a hot air duct 4 connected to the bottom of the heat exchanger 1, a temperature measuring element 5 installed on the outside of the hot air duct 4, a heat insulation mechanism 6 fixedly connected to the inside of the heat exchanger 1 by bolts, and a drainage mechanism 7 fixedly connected to the front side of the heat exchanger 1 by bolts.

[0029] The temperature measuring element 5 is inserted horizontally from the longitudinal center point of the side of the air duct. The temperature measuring point is located at the center of the cross-section of the air duct. The temperature measuring element 5 is one or more of the following: resistance temperature detector, thermocouple, and temperature transmitter.

[0030] When the temperature of the lower layer inside heat exchanger 1 is too low, causing the liquid inside the heat exchanger inlet steam pipeline 32 to freeze and prevent the liquid from flowing away through the heat exchanger inlet steam pipeline 32, the programmable controller controls the temperature sensing element 5 to measure the temperature inside the hot air duct 4, so that the hot air blown out of the hot air duct 4 melts the ice inside the heat exchanger inlet steam pipeline 32, allowing the liquid inside the heat exchanger inlet steam pipeline 32 to flow into the interior of the collection tower through the condensate bypass pipeline 27. In this way, the ice inside the heat exchanger can be melted through the hot air duct 4, preventing damage to the pipelines inside the heat exchanger.

[0031] As a preferred option, such as Figure 2 The insulation mechanism 6 includes an insulation frame 8, a replacement plate 9 is slidably connected to the front side of the insulation frame 8, insulation cotton 10 is fixedly connected to the front side of the replacement plate 9, and a locking block 11 is fixedly connected to the top and bottom of the front side of the insulation frame 8. A sliding groove 12 is provided on the top and bottom of the rear side of the replacement plate 9, and the inside of the sliding groove 12 is slidably connected to the outside of the locking block 11. A placement groove 13 is provided on the front side of the insulation cotton 10.

[0032] The heat exchanger 1 is opened by rotating the bolts at the top and bottom of the insulation frame 8. The replacement plate 9 with insulation cotton 10 is then secured to the outside of the insulation frame 8 via the sliding groove 12 and the locking block 11. The insulation frame 8 with insulation cotton 10 is then placed inside the heat exchanger 1. The bolts at the top and bottom of the insulation frame 8 are rotated to fix the insulation frame 8 to the heat exchanger 1. In this way, the heat blown out of the hot air duct 4 can be insulated by the insulation cotton 10, reducing the heat loss inside the heat exchanger 1, improving the melting efficiency of the liquid, and thus improving the condensate discharge efficiency.

[0033] As a preferred option, such as Figure 3 The drainage mechanism 7 includes a drainage frame 14. A movable groove 15 is provided on the front side of the drainage frame 14, and a squeezing block 16 is slidably connected inside the movable groove 15. A baffle 17 is fixedly connected to the front side of the squeezing block 16. A telescopic rod 18 is fixedly connected to the front side of the drainage frame 14 and the front side of the baffle 17 through a fixing block. The telescopic end of the telescopic rod 18 is fixedly connected to the front side of the baffle 17. A storage compartment 19 is fixedly connected to the bottom of the drainage frame 14.

[0034] Liquid is generated outside the heat exchanger inlet steam pipe 32. The insulation cotton 10 absorbs the liquid outside the heat exchanger inlet steam pipe 32. After the insulation cotton 10 has absorbed the liquid outside the heat exchanger inlet steam pipe 32 for a period of time, the telescopic rod 18 is extended. The telescopic rod 18 pushes the extrusion block 16 to move through the baffle 17. The extrusion block 16 extrudes the insulation cotton 10, causing the liquid inside the insulation cotton 10 to flow into the storage chamber 19 through the drain hole. In this way, the liquid inside the insulation cotton 10 can be discharged through the extrusion block 16, which increases the heat output of the insulation cotton 10 from the heat exchanger air duct 4 and improves the melting efficiency of the liquid.

[0035] As a preferred option, such as Figure 4 The steam pipeline assembly 2 includes a main steam pipeline 20 and a steam bypass pipeline 21. A first manual steam butterfly valve 22, a steam regulating valve 23 and a second manual steam butterfly valve 24 are installed in series from left to right on the outside of the main steam pipeline 20. A third manual steam butterfly valve 25 is installed on the steam bypass pipeline 21.

[0036] As a preferred option, such as Figure 5The condensate pipeline assembly 3 includes a main condensate pipeline 26 and a condensate bypass pipeline 27. From left to right, a manual gate valve 28, a pneumatic butterfly valve 29, and a check valve 30 are installed on the outside of the condensate bypass pipeline 27. A float-type steam trap 31 is installed on the outside of the main condensate pipeline 26.

[0037] As a preferred option, such as Figure 6 The heat exchanger 1 is equipped with a heat exchanger inlet steam pipeline 32. The heat exchanger inlet steam pipeline 32 is bent into four layers. From bottom to top, the left side of the first layer of the heat exchanger inlet steam pipeline 32 is equipped with a temperature detection element 33 and the left side of the second layer is equipped with a liquid level detection element 34.

[0038] The programmable controller is connected to the steam regulating valve 23, the pneumatic butterfly valve 29, and the float-type steam trap 31 via a data cable.

[0039] Further configuration: the interior of the placement tank 13 is in contact with the exterior of the heat exchanger inlet steam line 32.

[0040] Further configuration: A drain hole is provided at the bottom of the heat exchanger 1 and above the storage compartment 19, the storage compartment 19 being located behind the hot air duct 4.

[0041] During operation, first connect the outlet of the steam generator to the inlet of the feed pipe, connect the outlet of the discharge pipe to the inlet of the collection tower, connect the air inlet of the hot air duct 4 to the air outlet of the hot air gun, close the third manual steam butterfly valve 25 and the float-type steam trap 31, open the first manual steam butterfly valve 22, the second manual steam butterfly valve 24, the condensate manual gate valve 28, and the check valve 30, and at the same time, the programmable controller controls the opening size of the steam regulating valve 23, so that the steam flows into the interior of the heat exchanger inlet steam pipeline 32 through the main steam pipeline 20. The heat exchanger 1 generates low temperature to liquefy the steam into liquid.

[0042] When the temperature of the lower layer inside the heat exchanger 1 is too low, causing the liquid inside the heat exchanger inlet steam pipeline 32 to freeze and prevent the liquid from flowing away through the heat exchanger inlet steam pipeline 32, the programmable controller controls the temperature sensing element 5 to measure the temperature inside the hot air duct 4, so that the hot air blown out of the hot air duct 4 melts the ice inside the heat exchanger inlet steam pipeline 32, allowing the liquid inside the heat exchanger inlet steam pipeline 32 to flow into the interior of the collection tower through the condensate bypass pipeline 27.

[0043] When too much liquid freezes inside the heat exchanger inlet steam pipeline 32, the hot air duct 4 will consume a lot of heat due to prolonged blowing. Rotate the bolts at the top and bottom of the insulation frame 8 to open the heat exchanger 1. Insert the replacement plate 9 with insulation cotton 10 into the outside of the insulation frame 8 through the sliding groove 12 and the locking block 11. Place the insulation frame 8 with insulation cotton 10 into the inside of the heat exchanger 1. Rotate the bolts at the top and bottom of the insulation frame 8 to fix the insulation frame 8 to the heat exchanger 1. Let the insulation cotton 10 insulate the heat blown out by the hot air duct 4. The programmable controller compares the heat exchanger temperature with the set temperature through the temperature detection element 33. At the same time, the liquid level detection element 34 compares the heat exchanger liquid level with the set liquid level. Control the pneumatic butterfly valve 29 to let the liquid flow into the inside of the collection tower through the condensate bypass pipeline 27.

[0044] When the ice inside the heat exchanger inlet steam pipe 32 melts, liquid will be generated outside the heat exchanger inlet steam pipe 32. The insulation cotton 10 absorbs the liquid outside the heat exchanger inlet steam pipe 32. After the insulation cotton 10 absorbs the liquid outside the heat exchanger inlet steam pipe 32 for a period of time, the telescopic rod 18 is extended. The telescopic rod 18 pushes the squeezing block 16 to move through the baffle 17. The squeezing block 16 squeezes the insulation cotton 10, causing the liquid inside the insulation cotton 10 to flow into the storage compartment 19 through the drain hole.

[0045] 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 heat exchanger temperature control and condensate discharge device, comprising a heat exchanger (1), characterized in that: The top left side of the heat exchanger (1) is connected to a steam pipeline assembly (2) via a pipe, the bottom right side of the heat exchanger (1) is connected to a condensate pipeline assembly (3) via a pipe, the bottom of the heat exchanger (1) is connected to a hot air duct (4), a temperature measuring element (5) is installed on the outside of the hot air duct (4), an insulation mechanism (6) is fixedly connected to the inside of the heat exchanger (1) via bolts, and a drainage mechanism (7) is fixedly connected to the front side of the heat exchanger (1) via bolts. The insulation mechanism (6) includes an insulation frame (8), a replacement plate (9) is slidably connected to the front side of the insulation frame (8), insulation cotton (10) is fixedly connected to the front side of the replacement plate (9), a locking block (11) is fixedly connected to the top and bottom of the front side of the insulation frame (8), a sliding groove (12) is opened on the top and bottom of the rear side of the replacement plate (9), and the inside of the sliding groove (12) is slidably connected to the outside of the locking block (11), and a placement groove (13) is opened on the front side of the insulation cotton (10). The drainage mechanism (7) includes a drainage frame (14), a movable groove (15) is provided on the front side of the drainage frame (14), and a squeezing block (16) is slidably connected inside the movable groove (15). A baffle (17) is fixedly connected to the front side of the squeezing block (16). A telescopic rod (18) is fixedly connected to the front side of the drainage frame (14) and the front side of the baffle (17) through a fixing block. The telescopic end of the telescopic rod (18) is fixedly connected to the front side of the baffle (17). A storage compartment (19) is fixedly connected to the bottom of the drainage frame (14).

2. The heat exchanger temperature control and condensate discharge device according to claim 1, characterized in that: The steam pipeline assembly (2) includes a main steam pipeline (20) and a steam bypass pipeline (21). A first manual steam butterfly valve (22), a steam regulating valve (23) and a second manual steam butterfly valve (24) are sequentially connected in series from left to right on the outside of the main steam pipeline (20). A third manual steam butterfly valve (25) is provided on the steam bypass pipeline (21).

3. The heat exchanger temperature control and condensate discharge device according to claim 1, characterized in that: The condensate pipeline assembly (3) includes a condensate main pipeline (26) and a condensate bypass pipeline (27). The condensate bypass pipeline (27) is equipped with a manual gate valve (28), a pneumatic butterfly valve (29), and a check valve (30) from left to right on the outside. The condensate main pipeline (26) is equipped with a float-type steam trap (31).

4. The heat exchanger temperature control and condensate discharge device according to claim 1, characterized in that: The heat exchanger (1) is equipped with a heat exchanger inlet steam pipeline (32), which is bent into four layers. Temperature detection element (33) is installed on the left side of the first layer and liquid level detection element (34) is installed on the left side of the second layer from bottom to top.

5. The heat exchanger temperature control and condensate discharge device according to claim 4, characterized in that: The interior of the placement tank (13) is in contact with the exterior of the heat exchanger inlet steam pipeline (32).

6. The heat exchanger temperature control and condensate discharge device according to claim 1, characterized in that: The heat exchanger (1) has a drain hole at its bottom and above the storage compartment (19), which is located behind the hot air duct (4).

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