Preheating exchange system of boiler

Abstract

The utility model relates to the field of boiler preheating, in particular to a boiler preheating exchange system which comprises a heat exchange assembly and a quick coupler, and the heat exchange assembly comprises a heat exchanger, a heat exchange water inlet pipe, a heat exchange water outlet pipe, a cooling water inlet pipe and a cooling water outlet pipe. One end of the heat exchange water inlet pipe and one end of the heat exchange water outlet pipe are fixedly connected to the upper portion of the side wall of the heat exchanger in a spaced mode, and one end of the cooling water inlet pipe and one end of the cooling water outlet pipe are fixedly connected to the lower portion of the side wall of the heat exchanger in a spaced mode. And one end of the fixed joint is in threaded connection with the other end of the water pipe in the heat exchange assembly, and the other end of the fixed joint can be quickly inserted and fixed at one end of the inserting joint, so that the effects of converting the heat energy of the heated cooling water in the air compressor cooling system to preheat the boiler and improving the utilization rate of the heat energy are achieved.

Description

Technical Field

[0001] This application relates to the field of boiler preheating, and particularly to a boiler preheating exchange system. Background Art

[0002] Currently, an air compressor converts electrical energy into compressed air. During the air compression process, a large amount of heat energy is generated. The heat energy remaining in the air compressor will cause the internal temperature of the compressor to continuously rise. Excessive temperature will interfere with the normal operation of the air compressor, and there is a possibility of overheating and burning out the air compressor.

[0003] Currently, by setting up a water cooling system, the heat generated during the compressed air process is transferred to the cooling water, and then the inside of the air compressor is cooled. The cooling water is reused.

[0004] The above prior art solutions have the following defects: After cooling the air compressor, the heated cooling water needs to be naturally cooled first and then reused. During the natural cooling process of the cooling water, the heat energy will be released into the environment and lost, which will waste the large amount of heat energy generated by the air compressor that consumes a large amount of electrical energy, and is not conducive to realizing energy-saving production. Utility Model Content

[0005] This application provides a boiler preheating exchange system in order to convert the heat energy of the heated cooling water in the air compressor cooling system to preheat the boiler and improve the utilization rate of heat energy.

[0006] The above technical object of this application is achieved through the following technical solutions:

[0007] A boiler preheating exchange system includes a heat exchange component and a quick connector. The heat exchange component includes a heat exchanger, a heat exchange inlet pipe, a heat exchange outlet pipe, a cooling water inlet pipe, and a cooling water outlet pipe. One end of the heat exchange inlet pipe and one end of the heat exchange outlet pipe are fixedly connected to the upper part of the side wall of the heat exchanger at intervals. One end of the cooling water inlet pipe and one end of the cooling water outlet pipe are fixedly connected to the lower part of the side wall of the heat exchanger at intervals. The quick connector includes a fixed connector and a plug connector. One end of the fixed connector is threadedly connected to the other end of the water pipe in the heat exchange component, and the other end of the fixed connector can be quickly inserted and fixed at one end of the plug connector.

[0008] By adopting the above technical solution, by providing a heat exchanger, the heated cooling water flowing out of the air compressor cooling system flows into the heat exchanger through the cooling water inlet pipe. The heat exchanger converts the heat of the heated cooling water, and the cooling water is cooled in the heat exchanger. The converted heat is transferred to the water flowing into the heat exchanger through the heat exchange inlet pipe. The heat energy conversion continues. After the conversion is completed and the cooling water is cooled, it is discharged from the cooling water outlet pipe and enters the cooling system of the air compressor for reuse. After the conversion is completed, the heated water is discharged from the heat exchange outlet pipe to preheat the boiler, improving the utilization rate of heat energy. The quick-connect quick-installation joint avoids the staff from repeatedly loosening and tightening the threads when connecting and disconnecting the water pipes.

[0009] Optionally, an annular thickening part is integrally formed on the outer wall of the fixed joint away from the water pipe end. A sleeve is fixedly connected to the outer peripheral wall of the plug joint. One end of the sleeve is a sealed end. The annular thickening part can be detachably inserted into the sleeve.

[0010] By adopting the above technical solution, by providing a detachable fixed joint and plug joint, two water pipes can be quickly connected. By providing the annular thickening part and the sleeve, the annular thickening part that can be inserted into the sleeve and the sleeve jointly strengthen the sealing performance of the quick-installation joint.

[0011] Optionally, a first sliding groove, a second sliding groove and a limiting groove are formed on the outer peripheral wall of the annular thickening part. The first sliding groove and the second sliding groove are parallel and spaced apart. The first sliding groove communicates with both end faces of the annular thickening part. One end of the second sliding groove close to the water pipe is processed to form an opening. The limiting groove is formed between the first sliding groove and the second sliding groove. One end of the limiting groove close to the water pipe is processed to form an opening. A limiting block is fixedly connected to the inner wall of the sleeve. The limiting block is adapted to both the first sliding groove and the limiting groove. The limiting block can slide in the first sliding groove, and the limiting block is inserted and fixed in the limiting groove through a sliding structure.

[0012] By adopting the above technical solution, the fixed joint and the plug joint are connected and fixed through the limiting block inserted into the limiting groove. During the connection process, the limiting block first slides in the first sliding groove. When the limiting block slides past the annular thickening part, the plug joint is rotated, and the limiting block is inserted into the limiting groove. By providing the limiting block and the limiting groove, the fixed joint and the plug joint can be quickly connected, avoiding the staff from repeatedly loosening and tightening the threads when connecting and disconnecting the water pipes.

[0013] Optionally, the fixed joint further includes a baffle, a fixing member, a spring, and a sliding member. The baffle is fixedly connected to the outer peripheral wall of the fixed joint, and the baffle is spaced from the annular thickening portion. The fixing member is annularly sleeved and slidably arranged between the baffle and the annular thickening portion. The spring is fixedly installed between the baffle and the fixing member. The sliding member is fixedly connected to the side wall of the fixing member close to the annular thickening portion, and the sliding member is adapted to the second sliding groove and slidably arranged in the second sliding groove.

[0014] By adopting the above technical solution, when the limiting member slides in the first sliding groove, when the end of the limiting block contacts the side surface of the fixing member, continue to insert the plug joint into the fixed joint. The limiting block pushes the fixing member to contract the spring. When the spring can no longer contract, rotate the plug joint. When the limiting block contacts the side surface of the sliding member, release the plug joint, and the spring extends to reset the fixing member. The sliding structure inserts and fixes the limiting block in the limiting groove. By setting the limiting member to slide in the second sliding groove, it is avoided that the fixing member rotates along with the rotation of the plug joint.

[0015] Optionally, chamfers with arcs are formed at the corners of the side wall of the limiting block.

[0016] By adopting the above technical solution, the chamfers with arcs can quickly position the limiting block to the position of the first sliding groove.

[0017] Optionally, an annular groove is formed on the peripheral wall of the plug joint, and a sealing rubber ring is installed in the annular groove.

[0018] By adopting the above technical solution, the sealing rubber ring can enhance the sealing performance of the quick-connect joint.

[0019] Optionally, the exchange system further includes a water tank, a water storage inlet pipe, and a water pump. The end of the heat exchange inlet pipe away from the heat exchanger is fixedly connected to the side wall of the water tank. One end of the water storage inlet pipe is fixedly connected to the side wall of the water tank, and the other end is threadedly connected with a quick-connect joint. The water pump is connected to the water tank through the water storage inlet pipe.

[0020] By adopting the above technical solution, the water pump pumps water into the water tank through the water storage inlet pipe. The water tank stores the water. When in use, open the valve, and the water tank supplies water to the heat exchanger. It is avoided that the direct water supply by the water pump is unstable and heat energy loss occurs.

[0021] Optionally, the exchange system further includes two liquid level sensors, and the two liquid level sensors are vertically and spacedly suspended in the water tank.

[0022] By adopting the above technical solution, when the liquid level in the water tank gradually rises and contacts the upper liquid level sensor, the sensor emits a signal to control the water pump to stop pumping water. During heat exchange, the heat exchange inlet pipe is opened to discharge the water in the water tank into the heat exchanger. When the liquid level in the water tank drops to the position of the lower liquid level sensor, the lower liquid level sensor emits a signal to control the water pump to pump water into the water tank. By setting the liquid level sensor, it is ensured that there is always enough water in the water tank.

[0023] In summary, the present application has the following technical effects:

[0024] 1. By setting up a heat exchanger, a heat exchange inlet pipe, a heat exchange outlet pipe, a cooling water inlet pipe and a cooling water outlet pipe, the heat energy of the heated cooling water in the air compressor cooling system is converted to preheat the boiler, improving the utilization rate of heat energy;

[0025] 2. By setting up a fixed joint and a plug joint, two water pipes can be quickly connected, avoiding the staff from repeatedly loosening and tightening the threads when connecting and disconnecting the water pipes;

[0026] 3. By setting up a limit block, the fixed joint and the plug joint can be quickly connected, avoiding the staff from repeatedly loosening and tightening the threads when connecting and disconnecting the water pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is the external structure diagram of the present application;

[0028] Figure 2 is the external structure diagram of another angle of the present application;

[0029] Figure 3 is the external structure diagram of the present application from a top view perspective;

[0030] Figure 4 is the prominent structure diagram of the quick connector of the present application.

[0031] Description of the reference numerals: 1, bottom plate; 2, water storage assembly; 21, support frame; 22, water storage inlet pipe; 23, water pump; 24, water tank; 25, liquid level sensor; 3, heat exchange assembly; 31, support member; 32, heat exchanger; 321, clamping plate; 322, exchanger body; 33, heat exchange inlet pipe; 34, heat exchange outlet pipe; 35, cooling water inlet pipe; 36, cooling water outlet pipe; 4, quick connector; 41, fixed joint; 411, annular thickened part; 412, first sliding groove; 413, second sliding groove; 414, limiting groove; 415, baffle; 416, fixing member; 417, sliding member; 418, spring; 42, plug joint; 421, annular groove; 422, sleeve; 423, limit block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The present application will be further described in detail below with reference to the accompanying drawings.

[0033] An embodiment of the present application discloses a boiler preheating and heat exchange system. Referring to Figure 1 , it includes a bottom plate 1, a water storage assembly 2, a heat exchange assembly 3, and a quick-connect fitting 4. The heat exchange is used to preheat the air before entering the boiler to a certain temperature of the heating surface, which is used to improve the heat exchange performance of the boiler and reduce energy consumption. The boiler preheating and heat exchange system can preheat the boiler through heat exchange with the cooled water after temperature rise in the air compressor water cooling system, improving the utilization rate of thermal energy.

[0034] Combined with Figure 2 and Figure 3 , the bottom plate 1 is strip-shaped and horizontally placed, and the water storage assembly 2 is arranged on the upper surface of the bottom plate 1. The water storage assembly 2 includes a support frame 21, a water storage inlet pipe 22, a water pump 23, a water tank 24, and a liquid level sensor 25. The support frame 21 is a rectangular frame and is vertically fixed at one end of the upper surface of the bottom plate 1. The support frame 21 is a frame structure built by four square steel bars. The plane enclosed by the square steel bars of the support frame 21 is perpendicular to the length direction of the bottom plate 1. The water pump 23 is fixed on the bottom plate 1, and the water outlet end of the water pump 23 is communicated with the water tank 24. The water storage inlet pipe 22 is suspended above the bottom plate 1. The water storage inlet pipe 22 is L-shaped, one end of which is fixed to the upper part of the support frame 21, and the other end is connected to the water pump 23. The water tank 24 is fixedly arranged at one end of the bottom plate 1 away from the support frame 21. The water tank 24 is provided with a tank opening and the tank opening faces upward. The liquid level sensor 25 is suspended in the water tank 24. There are two liquid level sensors 25, and the two liquid level sensors 25 are arranged at intervals in the vertical direction.

[0035] Combined with Figure 1 and Figure 2 , the heat exchange assembly 3 includes a support member 31, a heat exchanger 32, a heat exchange inlet pipe 33, a heat exchange outlet pipe 34, a cooling water inlet pipe 35, and a cooling water outlet pipe 36. The support member 31 is horizontally fixed on the bottom plate 1 and is located between the water tank 24 and the support frame 21. The side surface of the support member 31 is provided with a special-shaped groove, and the special-shaped groove communicates with the two end faces of the support member 31. The heat exchanger 32 includes a clamping plate 321 and an exchanger body 322. There are two clamping plates 321. The two clamping plates 321 are parallel and spaced apart. The exchanger body 322 is arranged between the two clamping plates 321. The two clamping plates 321 clamp the exchanger body 322 and are fixedly connected by bolts and nuts. The heat exchanger 32 is vertically and fixedly installed on the support member 31, and the plate surface of the clamping plate 321 is parallel to the end face of the support member 31. The heat exchange inlet pipe 33 is horizontally arranged between the water tank 24 and the heat exchanger 32, and the heat exchange inlet pipe 33 communicates with the inside of the water tank 24 and the outlet of the exchanger body 322. One end of the heat exchange outlet pipe 34 is fixed to the upper part of the support frame 21, and the other end is fixed to the water outlet of the heat exchanger 32.

[0036] Combined with Figure 1 and Figure 2 , one end of the cooling water inlet pipe 35 is fixedly connected to the upper part of the support frame 21. The cooling water inlet pipe 35 extends upward above the bottom plate 1. After being bent twice, the cooling water inlet pipe 35 penetrates into the special-shaped groove of the support member 31. After being bent in a U shape, the other end of the cooling water inlet pipe 35 is fixedly connected to another water inlet of the heat exchanger. The end parts of the water storage inlet pipe 22, the heat exchange inlet pipe 33 and the cooling water inlet pipe 35 fixedly connected to the upper surface of the support frame 21 are parallel to each other and arranged at intervals. One end of the cooling water outlet pipe 36 is fixedly arranged on the upper surface of the horizontal square steel below the support frame 21. The cooling water outlet pipe 36 extends horizontally upward above the bottom plate 1, penetrates into the special-shaped groove of the support member 31, and after being bent in a U shape, the other end of the cooling water outlet pipe 36 is fixedly connected to another water outlet of the heat exchanger 32.

[0037] Combined with Figure 1 and Figure 2 , the water storage inlet pipe 22 uses a water pump 23 to pump water into the water tank 24. The water tank 24 stores the water. When the liquid level in the water tank 24 gradually rises and touches the upper liquid level sensor 25, the sensor sends a signal to control the water pump 23 to stop pumping water. When heat exchange is carried out, the heat exchange inlet pipe 33 is opened to discharge the water in the water tank 24 into the heat exchanger 32. When the liquid level in the water tank 24 drops to the position of the lower liquid level sensor 25, the lower liquid level sensor 25 sends a signal to control the water pump 23 to pump water into the water tank 24. The heated cooling water flowing out of the air compressor flows into the heat exchanger 32 through the cooling water inlet pipe 35. The heat is transferred to the water flowing out of the water tank 24 through the heat exchanger 32. After the cooling water is cooled, it flows out through the cooling water outlet pipe 36 and is reused in the air compressor. The heated water flows out from the heat exchange outlet pipe 34 and enters the boiler to preheat the boiler. By setting the water storage assembly 2 and the heat exchange assembly 3, the utilization rate of thermal energy can be improved, and when the heated cooling water flowing out of the air compressor cools naturally, the thermal energy is prevented from escaping into the air and causing waste.

[0038] Combined with Figure 3 and Figure 4The ends of the water storage inlet pipe 22, the heat exchange outlet pipe 34, the cooling water inlet pipe 35 and the cooling water outlet pipe 36 fixedly connected to the support frame 21 are all installed with quick-release connectors 4. The quick connector 4 includes a fixed connector 41 and a plug connector 42. The inner wall of one end of the fixed connector 41 is processed to form a thread. The fixed connector 41 and the ends of the water storage inlet pipe 22, the heat exchange outlet pipe 34, the cooling water inlet pipe 35 and the cooling water outlet pipe 36 are all sealed and threadedly installed. An annular thickened portion 411 is processed on the peripheral wall of the other end of the fixed connector 41. A first sliding groove 412, a second sliding groove 413 and a limiting groove 414 are provided on the peripheral wall of the annular thickened portion 411 along the length direction of the fixed connector 41. The first sliding groove 412 connects the two end faces of the annular thickened portion 411. The first sliding groove 412 is processed on the side wall of the end face opening of the fixed connector 41 away from the water pipe to form a chamfer with an arc. The second sliding groove 413 is parallel to the first sliding groove 412 and is arranged at intervals. The second sliding groove 413 is processed on the side of the annular thickened portion 411 close to the water pipe to form an opening. The limiting groove 414 is disposed between the first sliding groove 412 and the second sliding groove 413 and is parallel to the first sliding groove 412 and the second sliding groove 413. The limiting groove 414 is formed with an opening on the side of the annular thickened portion 411 close to the water pipe. The limiting groove 414 is connected to the second sliding groove 413. The length of the limiting groove 414 is one third of the length of the second sliding groove 413. The first sliding groove 412, the second sliding groove 413 and the limiting groove 414 form a set of sliding limiting structures, and three sets of sliding limiting structures are evenly distributed on the peripheral wall of the annular thickened portion 411.

[0039] Combination Figure 1 and Figure 4 , an annular baffle 415 is fixedly connected to the peripheral wall of the fixed joint 41 adjacent to and spaced from the annular thickened portion 411, and the plate surface of the baffle 415 is perpendicular to the peripheral wall of the fixed joint 41. An annular fixing member 416 is slidably sleeved between the baffle 415 and the annular thickened portion 411, and a spring 418 is arranged between the fixing member 416 and the baffle 415, one end of the spring 418 is fixedly connected to the plate surface of the baffle 415, and the other end is fixedly connected to the side of the fixing member 416, and the side of the fixing member 416 facing away from the spring 418 is in contact with the side of the annular thickened portion 411, and a sliding member 417 is fixedly connected to the side of the fixing member 416 in contact with the annular thickened portion, and the sliding member 417 is adapted to the second sliding groove 413 and is slidably inserted in the second sliding groove 413, and the baffle 415, the fixing member 416, the sliding member 417 and the spring 418 form a sliding structure.

[0040] Combination Figure 1 and Figure 4, one end inner wall of the socket 42 is threaded. The outer peripheral wall of the other end of the socket 42 can be slidably inserted into the inner peripheral wall of one end of the fixed joint 41 away from the water pipe. An annular groove 421 is provided on the outer peripheral wall of the insertion end of the socket 42 at an interval from the end face. A sealing rubber ring (not shown in the figure) is arranged in the annular groove 421, and the outer surface of the sealing rubber ring protrudes from the outer peripheral wall of the socket 42. A sleeve 422 is fixedly connected to the peripheral wall of the socket 42. The sleeve 422 is sleeved on the outer peripheral wall of the socket 42 at intervals. One end of the sleeve 422 is a closed end, and the other end of the sleeve 422 is close to the fixed joint 41. The closed end is fixedly connected to the outer wall of the socket 42. The closed end of the sleeve 422 is fixedly connected to one side of the annular groove 421 and is spaced from the annular groove 421. One end of the fixed joint 41 with the annular thickening part 411 can be inserted between the inner peripheral wall of the sleeve 422 and the outer wall of the socket 42. A limiting block 423 is fixedly connected to the inner peripheral wall of the sleeve 422. The limiting block 423 is adapted to the first sliding groove 412 and slides in the first sliding groove 412. The limiting block 423 is adapted to the limiting groove 414 and can be inserted into the limiting groove 414. The corners of the side wall of the limiting block 423 are all processed to form chamfers with arcs. The other end of the socket 42 is threadedly connected to other water pipes.

[0041] Combined Figure 1 and Figure 4 , when the socket 42 is inserted into the fixed joint 41, the limiting block 423 slides in the first sliding groove 412. When the end of the limiting block 423 contacts the side surface of the fixing member 416, continue to insert the socket 42 into the fixed joint 41. The limiting block 423 pushes the fixing member 416 to contract the spring 418. When the spring 418 can no longer contract, rotate the socket 42. When the limiting block 423 contacts the side surface of the sliding member 417, release the socket 42. The spring 418 extends to reset the fixing member 416, and the sliding structure inserts and fixes the limiting block 423 in the limiting groove 414. The socket 42 can be quickly installed and fixed to the fixed joint 41. The sliding member 417 slides in the second sliding groove 413 to prevent the fixing member 416 from rotating. When the socket 42 is connected to the fixed joint 41, the rotation of the socket 42 will not interfere with the sealed connection between the socket 42 and other water pipes. The quick-connect joint 4 avoids the staff from repeatedly tightening and loosening the threads when connecting and disconnecting the water pipes, improving work efficiency.

[0042] This specific embodiment is only an interpretation of the present application, and it is not a limitation of the present application. Those skilled in the art can make modifications without creative contributions to this embodiment according to needs after reading this specification, but as long as it is within the scope of the claims of the present application, it is protected by the patent law.

Claims

1. Boiler preheating exchange system, characterized by: The exchange system comprises a heat exchange component (3) and a quick-release joint (4), wherein the heat exchange component (3) comprises a heat exchanger (32), a heat exchange water inlet pipe (33), a heat exchange water outlet pipe (34), a cooling water inlet pipe (35) and a cooling water outlet pipe (36), wherein one end of the heat exchange water inlet pipe (33) and one end of the heat exchange water outlet pipe (34) are fixedly connected to the upper part of the side wall of the heat exchanger (32) at an interval, and one end of the cooling water inlet pipe (35) and one end of the cooling water outlet pipe (36) are fixedly connected to the lower part of the side wall of the heat exchanger (32) at an interval. The quick-release joint (4) comprises a fixed joint (41) and a plug joint (42), wherein one end of the fixed joint (41) is threadedly connected to the other end of the water pipe in the heat exchange component (3), and the other end of the fixed joint (41) can be quickly plugged and fixed to one end of the plug joint (42).

2. The boiler preheating exchange system according to claim 1, characterized in that: An annular thickened portion (411) is integrally formed on the outer wall of one end of the fixed joint (41) away from the water pipe, a sleeve (422) is fixedly connected to the outer peripheral wall of the plug joint (42), one end of the sleeve (422) is a sealed edge end, and the annular thickened portion (411) can be detachably inserted into the sleeve (422).

3. The boiler preheating exchange system according to claim 2, characterized in that: The outer peripheral wall of the annular thickened portion (411) is provided with a first sliding groove (412), a second sliding groove (413) and a limiting groove (414); the first sliding groove (412) and the second sliding groove (413) are parallel and arranged at intervals; the first sliding groove (412) communicates with two end faces of the annular thickened portion (411); the second sliding groove (413) is processed to form an opening at one end close to the water pipe; the limiting groove (414) is arranged between the first sliding groove (412) and the second sliding groove (413); the limiting groove (414) is processed to form an opening at one end close to the water pipe; a limiting block (423) is fixedly connected to the inner wall of the sleeve (422); the limiting block (423) is adapted to both the first sliding groove (412) and the limiting groove (414); the limiting block (423) can slide in the first sliding groove (412); the limiting block (423) is inserted and fixed in the limiting groove (414) through a sliding structure.

4. The boiler preheating exchange system according to claim 3, characterized in that: The fixed joint (41) further comprises a baffle (415), a fixing member (416), a spring (418) and a sliding member (417); the baffle (415) is fixedly connected to the outer peripheral wall of the fixed joint (41); the baffle (415) and the annular thickened portion (411) are spaced apart; the fixing member (416) is annularly slidably sleeved between the baffle (415) and the annular thickened portion (411); the spring (418) is fixedly installed between the baffle (415) and the fixing member (416); the sliding member (417) is fixedly connected to the side wall of the fixing member (416) close to the annular thickened portion (411); the sliding member (417) is adapted to the second sliding groove (413) and is slidably arranged in the second sliding groove (413).

5. The boiler preheating exchange system according to claim 4, characterized in that: The corners of the side walls of the limiting block (423) are processed to form chamfers with arcs.

6. The boiler preheating exchange system according to claim 3, characterized in that: An annular groove (421) is provided on the peripheral wall of the plug connector (42), and a sealing rubber ring is installed in the annular groove (421).

7. The boiler preheating exchange system according to claim 1, characterized in that: The exchange system also includes a water tank (24), a water storage inlet pipe (22) and a water pump (23); one end of the heat exchange inlet pipe (33) away from the heat exchanger (32) is fixedly connected to the side wall of the water tank (24); one end of the water storage inlet pipe (22) is fixedly connected to the side wall of the water tank (24); the other end of the water storage inlet pipe (22) is threadedly connected to a quick-release connector (4); and the water pump (23) is connected to the water tank (24) via the water storage inlet pipe (22).

8. The boiler preheating exchange system according to claim 1, characterized in that: The exchange system also includes two liquid level sensors (25), which are vertically suspended in the water tank (24) at intervals.

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