Circulating water heat exchange system of hydrogen internal combustion engine test room

Abstract

The utility model relates to the technical field of hydrogen internal combustion engine test, in particular to a circulating water heat exchange system of a hydrogen internal combustion engine test room, which comprises a refrigeration host and an intercooler, and further comprises an expansion water tank arranged between the refrigeration host and the intercooler, and the expansion water tank comprises a tank body, a partition plate, a flashboard and a telescopic rod, wherein the partition plate is fixedly arranged in the box body, so that a high-temperature area and a low-temperature area are formed in the box body, and a water outlet of the refrigeration main machine and a water outlet of the intercooler are respectively communicated with the low-temperature area through pipelines. The expansion water tank is arranged between the refrigeration main machine and the intercooler to buffer chilled water, the expansion water tank is arranged outdoors, indoor space cannot be occupied, heat exchange conditions can be continuously provided for the intercooler through the expansion water tank when the refrigeration main machine breaks down, and normal operation of the intercooler is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen internal combustion engine testing, in particular to a circulating water heat exchange system of a hydrogen internal combustion engine testing room. Background Art

[0002] The intercooler in the hydrogen internal combustion engine test room requires a supply of chilled water at about 25°C during the experiment. If the 7-degree chilled water after cooling the air-cooled main unit is directly supplied, a large amount of condensed water will appear on the intercooler side due to the low water supply temperature and large temperature difference. Therefore, it is necessary to use circulating water heat exchange equipment to adjust the chilled water temperature of the air-cooled main unit to about 25°C.

[0003] At present, the common practice on the market is to add a set of plate heat exchangers between the refrigeration host and the terminal intercooler, such as a circulating water heat exchanger disclosed in CN111964496A. When in use, the heat exchanger is fed with 7 / 12 degree chilled water on the primary side and 25 degree chilled water on the secondary side. However, this practice requires the plate heat exchanger to be arranged in the equipment room or the test room, which requires free space. In addition, once the unit on the host side fails and shuts down or loses power, the intercooler will not be able to exchange heat. Utility Model Content

[0004] In view of this, the utility model proposes a circulating water heat exchange system for a hydrogen internal combustion engine test room, which caches chilled water by arranging an expansion water tank between the refrigeration main unit and the intercooler. The expansion water tank is arranged outdoors, which not only does not occupy indoor space, but also can continue to provide heat exchange conditions for the intercooler through the expansion water tank when the refrigeration main unit fails, thereby ensuring the normal operation of the intercooler.

[0005] The technical solution of the utility model is achieved in this way:

[0006] The utility model provides a circulating water heat exchange system for a hydrogen internal combustion engine test room, comprising a refrigeration main unit and an intercooler, and also an expansion water tank, wherein:

[0007] The expansion water tank is arranged between the refrigeration main unit and the intercooler, and the expansion water tank is arranged outdoors. The expansion water tank comprises a box body, a partition, a gate plate and a telescopic rod, wherein:

[0008] The partition is fixedly arranged inside the box body, so that a high temperature zone and a low temperature zone are formed inside the box body, the water outlet of the refrigeration main unit and the water outlet of the intercooler are connected to the low temperature zone through pipelines, and the water inlet of the refrigeration main unit and the water inlet of the intercooler are connected to the high temperature zone through pipelines;

[0009] An overflow port is provided at the upper end of the partition along the transverse direction, and the high temperature zone and the low temperature zone are connected through the overflow port; a water replenishment hole is provided at the lower end of the partition along the transverse direction, and the high temperature zone and the low temperature zone are connected through the water replenishment hole;

[0010] The gate plate is vertically slidably arranged on the side of the partition plate;

[0011] The telescopic rod is fixedly arranged on the top of the box body, and the output end of the telescopic rod passes downward through the top of the box body and is fixedly connected to the top of the gate plate. The telescopic rod is used to drive the gate plate to selectively close or open the water supply hole.

[0012] On the basis of the above technical solution, preferably, the expansion water tank further includes two water pumps, wherein:

[0013] The two water pumps are fixedly arranged on the side of the box body and are connected to the high temperature area;

[0014] One of the water pumps is connected to the water inlet of the refrigeration main unit through a pipeline, and the other water pump is connected to the water inlet of the intercooler through a pipeline.

[0015] On the basis of the above technical solution, preferably, the expansion water tank further includes two water inlet pipes, wherein:

[0016] The water inlet pipe is fixedly arranged on the side of the box body and communicated with the low temperature zone;

[0017] One of the water inlet pipes is connected to the water outlet of the refrigeration main unit through a pipeline, and the other water inlet pipe is connected to the water outlet of the intercooler through a pipeline.

[0018] On the basis of the above technical solution, preferably, the expansion water tank further includes an overflow pipe and a water supply pipe, wherein:

[0019] The overflow pipe and the water supply pipe are fixedly arranged on the side of the box body and are communicated with the high temperature area.

[0020] On the basis of the above technical solution, preferably, it also includes a settling inclined tube, wherein:

[0021] The settling inclined tube is fixed at one position at the bottom of the high temperature zone and the low temperature zone, wherein a first settling zone is arranged between the bottom of one settling inclined tube and the bottom of the high temperature zone, and a second settling zone is arranged between the bottom of the other settling inclined tube and the bottom of the high temperature zone;

[0022] The water replenishment hole is located above the settling inclined tube.

[0023] On the basis of the above technical solution, preferably, the expansion water tank further includes two sewage pipes, wherein:

[0024] The sewage pipe is fixedly arranged on the side of the box body;

[0025] One of the sewage pipes is connected to the first sedimentation area, and the other sewage pipe is connected to the second sedimentation area.

[0026] On the basis of the above technical solution, preferably, a solenoid valve is provided on each of the water inlet pipe, the overflow pipe, the water supply pipe and the sewage pipe.

[0027] On the basis of the above technical solution, preferably, it further comprises two slide grooves, wherein:

[0028] The two slide grooves are arranged on both sides of the gate plate and fixedly arranged on the side of the partition plate;

[0029] The side ends of the gate plates are vertically slidably arranged on the inner sides of the corresponding sliding grooves.

[0030] On the basis of the above technical solution, preferably, it also includes a stirrer and a stirring motor, wherein:

[0031] The stirrer is arranged vertically, and the upper end of the stirrer is rotatably arranged on the top of the box, and the lower end of the stirrer is arranged inside the low temperature zone;

[0032] The stirring motor is fixedly arranged on the top of the box body, and the output shaft of the stirring motor is fixedly connected to the upper end of the stirrer.

[0033] On the basis of the above technical solution, preferably, it also includes a water level meter, wherein:

[0034] One end of the water level gauge is fixedly arranged on the box body, and the other end is arranged inside the high temperature zone.

[0035] The circulating water heat exchange system of a hydrogen internal combustion engine test room of the utility model has the following beneficial effects compared with the prior art:

[0036] (1) An expansion water tank is installed between the refrigeration unit and the intercooler to cache the chilled water. The expansion water tank is installed outdoors, which not only does not occupy indoor space, but also can continue to provide heat exchange conditions for the intercooler through the expansion water tank when the refrigeration unit fails, thereby ensuring the normal operation of the intercooler.

[0037] (2) By setting a telescopic rod to drive the gate to selectively close or open the water supply hole, it is convenient to open the water supply hole when the refrigeration main unit fails, so that the water in the low temperature zone can quickly enter the high temperature zone for use by the intercooler, thereby ensuring the normal operation of the intercooler.

[0038] (3) By setting up an agitator, the water in the low temperature zone can be stirred and mixed, so that the temperature of the water overflowing into the high temperature zone is balanced to ensure the normal operation of the intercooler.

[0039] (4) By setting up overflow ports and inclined sedimentation pipes, impurities in the water can be easily settled, which is beneficial to the protection of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] 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 work.

[0041] Figure 1 This is a schematic diagram of a circulating water heat exchange system for a hydrogen internal combustion engine test room of the utility model;

[0042] Figure 2 It is a top view of the expansion water tank of the utility model;

[0043] Figure 3 for Figure 2 AA section view;

[0044] Figure 4 It is a side view at the partition;

[0045] In the figure: 1. Refrigeration main unit; 2. Intercooler; 3. Expansion water tank; 4. Settling inclined pipe; 5. Chute; 6. Agitator; 7. Agitator motor; 8. Water level gauge; 31. Box body; 32. Partition; 33. Gate; 34. Telescopic rod; 35. Water pump; 36. Water inlet pipe; 37. Overflow pipe; 38. Water supply pipe; 39. Drain pipe; 301. High temperature zone; 302. Low temperature zone; 303. Overflow port; 304. Water supply hole; 305. First settling zone; 306. Second settling zone. DETAILED DESCRIPTION

[0046] The following will be combined with the specific implementation of the utility model to clearly and completely describe the technical solution in the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0047] like Figure 1As shown, a circulating water heat exchange system of a hydrogen internal combustion engine test room of the utility model includes a refrigeration main unit 1 and an intercooler 2, and also includes an expansion water tank 3, wherein the expansion water tank 3 is connected between the refrigeration main unit 1 and the intercooler 2 through a pipeline. When the expansion water tank 3 is installed, the expansion water tank 3 is arranged outdoors so that it does not occupy the space in the equipment room or the laboratory.

[0048] The expansion water tank 3 includes a tank body 31, a partition plate 32, a gate plate 33 and a telescopic rod 34, wherein Figure 3 As shown, the box body 31 is a heat-insulating water tank structure, the main body of which is made of stainless steel plate and is provided with a heat-insulating interlayer.

[0049] The partition 32 is fixedly arranged inside the box body 31, so that a high temperature zone 301 and a low temperature zone 302 are formed inside the box body 31, the water outlet of the refrigeration main unit 1 and the water outlet of the intercooler 2 are connected to the low temperature zone 302 through pipes, and the water inlet of the refrigeration main unit 1 and the water inlet of the intercooler 2 are connected to the high temperature zone 301 through pipes; an overflow port 303 is horizontally penetrated at the upper end of the partition 32, and the high temperature zone 301 and the low temperature zone 302 are connected through the overflow port 303.

[0050] Based on the above structure, in the normal working state of the circulating water heat exchange system of the hydrogen internal combustion engine test room, the outlet water of the refrigeration main unit 1 and the intercooler 2 is sent to the low temperature zone 302 through the pipeline for mixing, and the mixed water overflows to the high temperature zone 301 for storage through the overflow port 303. The refrigeration main unit 1 and the intercooler 2 both use the water in the high temperature zone 301 for return water. When the refrigeration main unit 1 fails and the water supply is cut off, the intercooler 2 can continue to use the water in the high temperature zone 301 to ensure the normal operation of the intercooler 2.

[0051] In order to improve the mixing efficiency of water, the circulating water heat exchange system of the hydrogen internal combustion engine test room also includes a stirrer 6 and a stirring motor 7, wherein the stirrer 6 is arranged vertically, and the upper end of the stirrer 6 is rotatably arranged on the top of the box 31, and the lower end of the stirrer 6 is arranged inside the low temperature zone 302; the stirring motor 7 is fixedly arranged on the top of the box 31, and the output shaft of the stirring motor 7 is fixedly connected to the upper end of the stirrer 6. It can drive the stirring motor 7 to rotate the stirrer 6, and then stir the water in the low temperature zone 302 through the stirrer 6, so that the water is quickly mixed.

[0052] At the same time, in order to ensure that the water capacity of the high-temperature zone 301 is sufficient, a water replenishment hole 304 is provided at the lower end of the partition 32 along the horizontal direction, and the high-temperature zone 301 and the low-temperature zone 302 are connected through the water replenishment hole 304; the gate plate 33 is vertically slidably arranged on the side of the partition plate 32; the telescopic rod 34 is fixedly arranged on the top of the box body 31, and the output end of the telescopic rod 34 penetrates the top of the box body 31 downward and is fixedly connected to the top of the gate plate 33, and the telescopic rod 34 is used to drive the gate plate 33 to selectively close the water replenishment hole 304 or open the water replenishment hole 304; under normal conditions, the water replenishment hole 304 is closed, but when the refrigeration host 1 fails and the water is cut off, the telescopic rod 34 drives the gate plate 33 to rise and open the water replenishment hole 304. At this time, the water in the low-temperature zone 302 quickly enters the high-temperature zone 301 for use by the intercooler 2, thereby ensuring the normal operation of the intercooler 2.

[0053] like Figure 4 As shown, two slide grooves 5 are set on both sides of the gate plate 33, and the two slide grooves 5 are fixedly set on the side of the partition 32; the side ends of the gate plate 33 are set to slide vertically on the inner sides of the corresponding slide grooves 5, and when the telescopic rod 34 drives the gate plate 33 to rise and fall, the two sides of the gate plate 33 slide on the inner sides of the corresponding slide grooves 5.

[0054] The high temperature zone 301 uses an active water delivery method to deliver water to the outside, specifically, Figure 3 As shown, the expansion water tank 3 also includes two water pumps 35, wherein the water pump 35 adopts any flow pump with flow control capability in the prior art to control the output of water in the high temperature zone 301, such as an intelligent flow control water pump disclosed in CN216518865U. The two water pumps 35 are fixedly arranged on the side of the tank 31 and connected to the high temperature zone 301; one of the water pumps 35 is connected to the water inlet of the refrigeration main unit 1 through a pipeline, and the other water pump 35 is connected to the water inlet of the intercooler 2 through a pipeline, and water is pumped into the refrigeration main unit 1 and the intercooler 2 through the corresponding water pump 35.

[0055] The expansion water tank 3 also includes two water inlet pipes 36, wherein the water inlet pipes 36 are fixedly arranged on the side of the tank body 31 and are connected to the low temperature zone 302; one of the water inlet pipes 36 is connected to the water outlet of the refrigeration main unit 1 through a pipeline, and the other water inlet pipe 36 is connected to the water outlet of the intercooler 2 through a pipeline, and the water pumped to the refrigeration main unit 1 and the intercooler 2 flows back to the low temperature zone 302 through the water inlet pipe 36.

[0056] In addition, if Figure 3As shown, the expansion water tank 3 also includes an overflow pipe 37 and a water replenishing pipe 38, wherein the overflow pipe 37 and the water replenishing pipe 38 are fixedly arranged on the side of the tank body 31 and are connected to the high temperature zone 301. When the water level in the high temperature zone 301 is low, water is replenished into the high temperature zone 301 through the water replenishing pipe 38. When the water level is high, water overflows outward through the overflow pipe 37. In order to detect the water level, a water level gauge 8 is fixedly arranged on the tank body 31, and one end of the water level gauge 8 is arranged inside the high temperature zone 301 for detecting the water level. The water level gauge 8 adopts an electronic water level gauge.

[0057] During the operation of the equipment, scale will appear in the water. To prevent the scale from clogging the pipeline, a settling inclined pipe 4 is fixed at the bottom of the high temperature zone 301 and the low temperature zone 302, such as Figure 3 As shown, a first sedimentation zone 305 is arranged between the bottom of one of the sedimentation inclined tubes 4 and the bottom of the high temperature zone 301, and a second sedimentation zone 306 is arranged between the bottom of the other sedimentation inclined tube 4 and the bottom of the high temperature zone 301; the water replenishment hole 304 is located above the sedimentation inclined tube 4, and the water in the high temperature zone 301 and the low temperature zone 302 precipitate scale through the corresponding sedimentation inclined tube 4, and the scale finally falls into the first sedimentation zone 305 or the second sedimentation zone 306.

[0058] In the above structure, in order to facilitate sewage discharge, the expansion water tank 3 also includes two sewage pipes 39, wherein Figure 3 As shown, the drain pipes 39 are fixedly arranged on the side of the box body 31; one of the drain pipes 39 is connected to the first settling area 305, and the other drain pipe 39 is connected to the second settling area 306. The scale in the first settling area 305 and the second settling area 306 is discharged through the corresponding drain pipes 39.

[0059] In addition, a solenoid valve is provided on each of the water inlet pipe 36, the overflow pipe 37, the water supply pipe 38 and the sewage discharge pipe 39 to control the on-off of the pipeline.

[0060] The method of using the circulating water heat exchange system of a hydrogen internal combustion engine test room of the utility model is as follows:

[0061] The outlet water of the refrigeration main unit 1 and the intercooler 2 is directly supplied to the low temperature zone 302 and mixed inside the low temperature zone 302. After mixing, it overflows to the high temperature zone 301. The water in the high temperature zone 301 is used as return water for the refrigeration main unit 1 and the intercooler 2.

[0062] When the refrigeration main unit 1 fails, the water supply hole 304 is opened, and the water in the low temperature zone 302 quickly enters the high temperature zone 301 for use by the intercooler 2 to ensure the normal operation of the intercooler 2. After the failure is eliminated, the water supply hole 304 is closed.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A circulating water heat exchange system for a hydrogen internal combustion engine test room, comprising a refrigeration main unit (1) and an intercooler (2), characterized in that: It also includes an expansion water tank (3), wherein: The expansion water tank (3) is arranged between the refrigeration main unit (1) and the intercooler (2), and the expansion water tank (3) is arranged outdoors. The expansion water tank (3) comprises a box body (31), a partition (32), a gate plate (33) and a telescopic rod (34), wherein: The partition (32) is fixedly arranged inside the box (31), so that a high temperature zone (301) and a low temperature zone (302) are formed inside the box (31); the water outlet of the refrigeration main unit (1) and the water outlet of the intercooler (2) are respectively connected to the low temperature zone (302) through a pipeline, and the water inlet of the refrigeration main unit (1) and the water inlet of the intercooler (2) are respectively connected to the high temperature zone (301) through a pipeline; An overflow port (303) is provided at the upper end of the partition (32) in a transverse direction, and the high temperature zone (301) and the low temperature zone (302) are connected via the overflow port (303); a water replenishment hole (304) is provided at the lower end of the partition (32) in a transverse direction, and the high temperature zone (301) and the low temperature zone (302) are connected via the water replenishment hole (304); The gate plate (33) is vertically slidably arranged on the side of the partition plate (32); The telescopic rod (34) is fixedly arranged on the top of the box body (31); the output end of the telescopic rod (34) passes downward through the top of the box body (31) and is fixedly connected to the top of the gate plate (33); the telescopic rod (34) is used to drive the gate plate (33) to selectively close the water supply hole (304) or open the water supply hole (304).

2. The circulating water heat exchange system for a hydrogen internal combustion engine test chamber according to claim 1, characterized in that: The expansion water tank (3) further comprises two water pumps (35), wherein: The two water pumps (35) are fixedly arranged on the side of the box (31) and are connected to the high temperature zone (301); One of the water pumps (35) is connected to the water inlet of the refrigeration main unit (1) through a pipeline, and the other water pump (35) is connected to the water inlet of the intercooler (2) through a pipeline.

3. The circulating water heat exchange system for a hydrogen internal combustion engine test chamber according to claim 2, characterized in that: The expansion water tank (3) further comprises two water inlet pipes (36), wherein: The water inlet pipe (36) is fixedly arranged on the side of the box body (31) and is connected to the low temperature zone (302); One of the water inlet pipes (36) is connected to the water outlet of the refrigeration main unit (1) through a pipeline, and the other water inlet pipe (36) is connected to the water outlet of the intercooler (2) through a pipeline.

4. The circulating water heat exchange system for a hydrogen internal combustion engine test chamber according to claim 3, characterized in that: The expansion water tank (3) further comprises an overflow pipe (37) and a water supply pipe (38), wherein: The overflow pipe (37) and the water supply pipe (38) are fixedly arranged on the side of the box body (31) and are connected to the high temperature zone (301).

5. The circulating water heat exchange system for a hydrogen internal combustion engine test chamber according to claim 4, characterized in that: It also includes a settling inclined tube (4), wherein: The settling inclined tube (4) is fixed at one location at the bottom of the high temperature zone (301) and the low temperature zone (302), wherein a first settling zone (305) is provided between the bottom of one of the settling inclined tubes (4) and the bottom of the high temperature zone (301), and a second settling zone (306) is provided between the bottom of the other settling inclined tube (4) and the bottom of the high temperature zone (301); The water replenishment hole (304) is located above the settling inclined tube (4).

6. A circulating water heat exchange system for a hydrogen internal combustion engine test chamber as claimed in claim 5, characterized in that: The expansion water tank (3) further comprises two sewage pipes (39), wherein: The sewage discharge pipe (39) is fixedly arranged on the side of the box body (31); One of the sewage pipes (39) is connected to the first sedimentation area (305), and the other sewage pipe (39) is connected to the second sedimentation area (306).

7. The circulating water heat exchange system for a hydrogen internal combustion engine test chamber according to claim 6, characterized in that: A solenoid valve is provided on each of the water inlet pipe (36), the overflow pipe (37), the water replenishment pipe (38) and the sewage discharge pipe (39).

8. The circulating water heat exchange system for a hydrogen internal combustion engine test chamber according to claim 1, characterized in that: It also includes two slide slots (5), wherein: The two slide grooves (5) are arranged on both sides of the gate plate (33) and are fixedly arranged on the side of the partition plate (32); The side end of the gate plate (33) is arranged to slide vertically on the inner side of the corresponding slide groove (5).

9. The circulating water heat exchange system for a hydrogen internal combustion engine test chamber according to claim 1, characterized in that: It also includes a stirrer (6) and a stirring motor (7), wherein: The stirrer (6) is arranged vertically, and the upper end of the stirrer (6) is rotatably arranged on the top of the box (31), and the lower end of the stirrer (6) is arranged on the inner side of the low temperature zone (302); The stirring motor (7) is fixedly arranged on the top of the box body (31), and the output shaft of the stirring motor (7) is fixedly connected to the upper end of the stirrer (6).

10. The circulating water heat exchange system for a hydrogen internal combustion engine test chamber according to claim 1, characterized in that: Also included is a water level gauge (8), wherein: One end of the water level gauge (8) is fixedly arranged on the box body (31), and the other end is arranged inside the high temperature zone (301).

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