Spraying liquid cooling device for MVR (Mechanical Vapor Recompression) system

Abstract

The utility model provides a liquid spraying cooling device for an MVR (mechanical vapor recompression) system, which comprises a liquid supply pipe fixedly connected to a connecting pipe of a compressor and a heater, the inner end of the liquid supply pipe is rotatably connected with a liquid storage pipe, the liquid storage pipe is fixedly connected with a liquid outlet pipe, the side wall of the liquid outlet pipe is provided with a blade plate, and the blade plate is provided with a liquid outlet communicated with the liquid outlet pipe. The end of the liquid outlet pipe is elastically connected with a scraping plate, and the scraping plate can slide along the inner wall of the connecting pipe when rotating along with the liquid outlet pipe. The liquid outlet pipe rotates under the combined action of the counter-acting force of the sprayed liquid and the flowing water vapor, so that the sprayed liquid forms a water curtain on the section of the connecting pipe and can be in full contact with the overheated water vapor, the superheat degree of the water vapor is reduced through the rapid vaporization process, and meanwhile, the water vapor is cooled to the room temperature. And the scraping plates abut against the inner wall of the connecting pipe under the action of centrifugal force, and the inner wall of the connecting pipe can be cleaned.

Description

Technical Field

[0001] The present application relates to the technical field of compressors, and in particular to a liquid spray cooling device for an MVR system. Background Art

[0002] The principle of MVR is: the secondary steam generated by the evaporation of the original liquid is compressed by the compressor to increase its temperature and pressure, increase its thermal enthalpy, and then enter the evaporator to heat the liquid on the heated side. After the liquid obtains heat, it boils and vaporizes to produce secondary steam, which enters the steam compressor again to be compressed and heated, thereby realizing the recycling of the secondary steam. The core concept of the technology is to use compression equipment to increase the saturation temperature of the secondary steam so that the latent heat of the secondary steam can be recycled. The existing MVR system has low operating efficiency because the secondary steam has a large degree of superheat at the outlet of the compressor after the compressor does work, which affects the heat exchange efficiency of the heater. For this reason, the inventor proposed a liquid spray cooling device for an MVR system. Utility Model Content

[0003] The purpose of the present application is to provide a liquid spray cooling device for an MVR system, which can reduce the superheat of water vapor through the vaporization process of the sprayed liquid.

[0004] The embodiment of the present application is implemented as follows:

[0005] The present application provides a liquid spray cooling device for an MVR system, comprising a liquid supply pipe fixedly connected to a connecting pipe of a compressor and a heater, the inner end of the liquid supply pipe being rotatably connected to a liquid storage pipe, a liquid outlet pipe being fixedly connected to the liquid storage pipe, a blade being provided on a side wall of the liquid outlet pipe, a liquid outlet communicating with the liquid outlet pipe being provided on the blade, a scraper being elastically connected to the end of the liquid outlet pipe, and the scraper being able to slide along the inner wall of the connecting pipe when rotating with the liquid outlet pipe.

[0006] In the present application, the liquid outlet pipe rotates under the combined action of the reaction force of the sprayed liquid and the flowing water vapor, so that the sprayed liquid forms a water curtain on the cross section of the connecting pipe, which can fully contact with the superheated water vapor and reduce the superheat of the water vapor through a rapid vaporization process. At the same time, the scraper abuts against the inner wall of the connecting pipe under the action of centrifugal force, and can clean the inner wall of the connecting pipe.

[0007] In an optional embodiment, the inner end of the liquid supply pipe is arranged along the axis of the connecting pipe.

[0008] In an optional embodiment, the liquid storage tube and the connecting tube are coaxially arranged.

[0009] In an optional embodiment, the liquid outlet pipe is entirely arranged along the radial direction of the liquid storage pipe.

[0010] In an optional embodiment, the liquid outlet pipes are evenly distributed along the circumference of the liquid storage pipe.

[0011] In an optional embodiment, the blade is entirely arranged along the axial direction of the liquid outlet pipe.

[0012] In an optional embodiment, the outer ends of the blades are inclined toward the flow direction of the water vapor.

[0013] In an optional embodiment, the width of the liquid outlet decreases from the outside to the inside.

[0014] In an optional embodiment, the end of the liquid outlet pipe is provided with a mounting groove for accommodating a scraper.

[0015] In an optional embodiment, a connecting rod inserted into the mounting groove is fixedly connected to the scraper, and a spring is fixedly connected between the connecting rod and the mounting groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The exemplary embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the embodiments described below are only used to explain the present application, rather than to limit the scope of the present application. In the accompanying drawings:

[0017] Figure 1 is a schematic diagram of a liquid spray cooling device for an MVR system according to an embodiment of the present application;

[0018] Figure 2 is a schematic diagram of a liquid outlet pipe according to an embodiment of the present application;

[0019] Reference numerals:

[0020] 10. Connecting pipe;

[0021] 20. Liquid supply pipe;

[0022] 30. Liquid storage tube;

[0023] 40. Liquid outlet pipe;

[0024] 41. Leaf blade;

[0025] 42. Liquid outlet;

[0026] 43. Mounting slot;

[0027] 44. Spring;

[0028] 45. Connecting rod;

[0029] 46. ​​Scraper. DETAILED DESCRIPTION

[0030] Example 1

[0031] See also Figure 1-Figure 2In this embodiment, the liquid spray cooling device for the MVR system includes a liquid supply pipe 20 fixedly connected to a connecting pipe 10 of a compressor and a heater, the inner end of the liquid supply pipe 20 is rotatably connected to a liquid storage pipe 30, a liquid outlet pipe 40 is fixedly connected to the liquid storage pipe 30, a blade 41 is provided on the side wall of the liquid outlet pipe 40, a liquid outlet 42 communicated with the liquid outlet pipe 40 is opened on the blade 41, a scraper 46 is elastically connected to the end of the liquid outlet pipe 40, and the scraper 46 can slide along the inner wall of the connecting pipe 10 when rotating with the liquid outlet pipe 40.

[0032] In this embodiment, the liquid outlet pipe 40 rotates under the combined action of the reaction force of the sprayed liquid and the flowing water vapor, so that the sprayed liquid forms a water curtain on the cross-section of the connecting pipe 10, which can fully contact with the superheated water vapor and reduce the superheat of the water vapor through a rapid vaporization process. At the same time, the scraper 46 abuts against the inner wall of the connecting pipe 10 under the action of centrifugal force, and can clean the inner wall of the connecting pipe 10.

[0033] Specifically, the connecting pipe 10 is arranged between the compressor and the heater, and the water vapor compressed by the compressor enters the heater through the connecting pipe 10. The liquid supply pipe 20 is integrally fixed to the connecting pipe 10, and the inner end of the liquid supply pipe 20 extends into the interior of the connecting pipe 10 and is arranged along the axis of the connecting pipe 10. The cooling water flows into the interior of the connecting pipe 10 through the liquid supply pipe 20. The liquid storage pipe 30 is integrally rotatably connected to the inner end of the liquid supply pipe 20, and the liquid storage pipe 30 maintains a sealed connection with the liquid supply pipe 20. The liquid storage pipe 30 maintains a coaxial arrangement with the connecting pipe 20, and the liquid storage pipe 30 is used to receive the cooling water provided by the liquid supply pipe 20.

[0034] In addition, the liquid outlet pipe 40 is arranged as a whole along the radial direction of the liquid storage pipe 30, and the liquid outlet pipe 40 is evenly distributed along the circumference of the liquid storage pipe 30, the inner cavity of the liquid outlet pipe 40 is connected to the inner cavity of the liquid storage pipe 30, the blade 41 is arranged as a whole along the axial direction of the liquid outlet pipe 40, and the outer end of the blade 41 is inclined to the flow direction of water vapor, and a liquid outlet 42 is opened at the end of the blade 41. The liquid outlet 42 is arranged as a whole along the longitudinal direction of the blade 41, and the width of the liquid outlet 4 decreases from the outside to the inside, so that the cooling water in the liquid storage pipe 30 can be sprayed out in a fan shape through the liquid outlet 42 after flowing into the liquid outlet pipe 40.

[0035] It should be understood that since the outer end of the blade 41 is inclined in the flow direction of the water vapor, when the superheated water vapor flows through the connecting pipe 10, it can push the blade 41 to rotate, that is, the flow of water vapor can drive the liquid storage pipe 30 and the liquid outlet pipe 40 to rotate around the axis of the connecting pipe 10, so that the sprayed cooling water can form a water curtain on the cross-section of the connecting pipe 10, and the water curtain can fully contact the water vapor. Through the rapid vaporization process of the cooling water, the superheat of the water vapor can be reduced.

[0036] In addition, a mounting groove 43 is provided at the end of the liquid outlet pipe 40, and the mounting groove 43 is coaxially arranged with the liquid outlet pipe 40. A connecting rod 45 is slidably inserted in the mounting groove 43, and a spring 43 is fixedly connected between the inner end of the connecting rod 45 and the bottom of the mounting groove 43. A scraper 46 is fixedly connected to the outer end of the connecting rod 45. In a static state, under the action of the spring 43, the scraper 46 does not contact the inner wall of the connecting pipe 10; when the scraper 46 rotates with the liquid outlet pipe 40, the scraper 46 will be affected by centrifugal force, and the scraper 46 will move toward the outside of the liquid outlet pipe 40 until it abuts against the inner wall of the connecting pipe 10. The scraper 46 rotates along the inner wall of the connecting pipe 10 and can clean the inner wall of the connecting pipe 10.

[0037] As an example, the scraper 46 is arranged as a whole to be parallel to the axis of the connecting pipe 10 , and the outer end surface of the scraper 46 is configured to be an arc shape that matches the inner wall shape of the connecting pipe 10 .

[0038] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A liquid spray cooling device for an MVR system, characterized in that: It includes a liquid supply pipe fixedly connected to a connecting pipe of a compressor and a heater, the inner end of the liquid supply pipe is rotatably connected to a liquid storage pipe, a liquid outlet pipe is fixedly connected to the liquid storage pipe, a vane is provided on the side wall of the liquid outlet pipe, a liquid outlet communicated with the liquid outlet pipe is opened on the vane, a scraper is elastically connected to the end of the liquid outlet pipe, and the scraper can slide along the inner wall of the connecting pipe when rotating with the liquid outlet pipe.

2. The liquid spray cooling device for the MVR system according to claim 1, characterized in that: The inner end of the liquid supply pipe is arranged along the axis of the connecting pipe.

3. The liquid spray cooling device for the MVR system according to claim 1, characterized in that: The liquid storage tube and the connecting tube are coaxially arranged.

4. The liquid spray cooling device for the MVR system according to claim 1, characterized in that: The liquid outlet pipe is arranged as a whole along the radial direction of the liquid storage pipe.

5. The liquid spray cooling device for the MVR system according to claim 1, characterized in that: The liquid outlet pipes are evenly distributed along the circumference of the liquid storage pipe.

6. The liquid spray cooling device for the MVR system according to claim 1, characterized in that: The blade is arranged as a whole along the axial direction of the liquid outlet pipe.

7. The liquid spray cooling device for the MVR system according to claim 1, characterized in that: The outer ends of the blades are inclined toward the flow direction of the water vapor.

8. The liquid spray cooling device for the MVR system according to claim 7, characterized in that: The width of the liquid outlet decreases from the outside to the inside.

9. The liquid spray cooling device for an MVR system according to claim 1, characterized in that: The end of the liquid outlet pipe is provided with a mounting groove for accommodating the scraper.

10. The liquid spray cooling device for the MVR system according to claim 9, characterized in that: A connecting rod inserted into the installation groove is fixedly connected to the scraper, and a spring is fixedly connected between the connecting rod and the installation groove.

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