A flash drum economizer with automatic mechanical liquid level control

Abstract

The present invention discloses a flash drum economizer with automatic mechanical liquid level control, which relates to the technical field of economizers. Aiming at the problem that the existing flash drum economizers are difficult to control the liquid level inside the flash drum economizers and the effect of evaporation of the refrigerant liquid is not good, the following scheme is proposed, which includes an economizer tank body, a tank body flange and a tank body base. A first material guide plate is arranged at the bottom of the economizer tank body, and a second material guide plate is installed on one side of the top of the first material guide plate, a third material guide plate is arranged on one side of the second material guide plate, and a gas-liquid separation plate is arranged on one side of the first material guide plate, a liquid level control mechanism is arranged on one side of the top of the economizer tank body, and an air outlet pipe is connected to the other side of the top of the economizer tank body, a liquefaction cylinder is arranged on the top of the air outlet pipe, and a liquefaction spiral tube is installed inside the liquefaction cylinder. The present invention can determine the height of the liquid level by rotating a mechanical gear, and can further liquefy the vaporized condensate.

Description

Technical Field

[0001] The invention relates to the technical field of economizers, and in particular to a flash drum economizer with automatic mechanical liquid level control. Background Art

[0002] Economizer is an economizer that absorbs heat through the throttling evaporation of the refrigerant itself, so that another part of the refrigerant can be supercooled. Flash cylinder economizer has the advantages of small heat exchange temperature difference and high system efficiency, and has broad application prospects. Most traditional flash cylinder economizers are difficult to control the liquid level inside the flash cylinder economizer. At the same time, the vaporization effect of the refrigerant is not good, resulting in a decrease in refrigeration efficiency. A flash cylinder economizer with automatic mechanical liquid level control is proposed. The height of the liquid level can be determined by the rotation of mechanical gears. The vaporized condensate can be further liquefied through the liquefaction spiral tube to improve the vaporization effect of the refrigerant. Summary of the invention

[0003] The present invention provides a flash drum economizer with automatic mechanical liquid level control, which solves the existing problems.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A flash drum economizer with automatic mechanical liquid level control comprises an economizer tank body, tank flanges are installed on both sides of the economizer tank body, and a tank base is arranged on the top of the economizer tank body, a first material guide plate is arranged on the inner bottom of the economizer tank body, and a second material guide plate is installed on one side of the top of the first material guide plate, a third material guide plate is arranged on one side of the second material guide plate, and a gas-liquid separation plate is arranged on one side of the first material guide plate, a liquid level control mechanism is arranged on one side of the top of the economizer tank body, and an air outlet pipe is connected to the other side of the top of the economizer tank body, a liquefaction cylinder is arranged on the top of the air outlet pipe, and a liquefaction spiral tube is installed inside the liquefaction cylinder.

[0006] Preferably, the liquid level control mechanism includes a liquid level control box, and the liquid level control box is installed on the top side of the economizer tank body, a liquid level control rod is arranged through the liquid level control box, and a tooth groove is provided on one side of the liquid level control rod, a first gear is arranged inside the liquid level control box, and a second gear is installed on one side of the first gear, a lifting rod is connected to the bottom of the liquid level control rod, and a float is installed at the bottom end of the lifting rod.

[0007] Preferably, the liquid level control rod passes through the inside of the economizer tank, and the lifting rod and the liquid level control rod are colinear with each other, and the inside of the float is a hollow structure.

[0008] Preferably, the shape and size of the tooth groove opened on one side of the liquid level control rod matches the first gear, and the first gear and the second gear are meshed with each other, and the first gear and the second gear rotate inside the liquid level control box.

[0009] Preferably, a liquid inlet pipe is provided on one side of the economizer tank body, and a liquid outlet pipe is connected to one side of the bottom of the economizer tank body.

[0010] Preferably, the first material guide plate, the second material guide plate and the third material guide plate are of an inclined structure, and filter holes are provided inside the gas-liquid separation plate, and the gas-liquid separation plate is of an L-shaped structure.

[0011] Preferably, an air outlet flange is installed between the air outlet pipe and the liquefied cylinder, and the liquefied spiral pipe is a spiral structure, one end of the liquefied spiral pipe is connected to the air outlet pipe, and the other end of the liquefied spiral pipe is connected to the top of the liquefied cylinder.

[0012] Preferably, the economizer tank body and the tank body flange are fixedly connected by bolts, and the tank body flange is symmetrically installed on both sides of the economizer tank body, and base fixing holes are symmetrically opened on both sides of the bottom of the tank body base.

[0013] A control method for a flash drum economizer with automatic mechanical liquid level control comprises the following steps:

[0014] S1. After the economizer tank is installed at a suitable position through the tank base, the first guide plate, the second guide plate and the third guide plate are installed inside the economizer tank respectively;

[0015] S2. Lower the liquid level control rod to the lowest position, so that one side of the float is in contact with the top of the first guide plate, and fix the tank flange on both sides of the economizer tank with bolts;

[0016] S3, the refrigerant enters the economizer tank from the liquid inlet pipe, and then is guided by the first material guide plate to flow into the side of the gas-liquid separation plate, and the gas-liquid separation is achieved through the filter holes opened inside the gas-liquid separation plate, and the excess refrigerant flows out from the liquid outlet pipe;

[0017] S4, the vaporized refrigerant liquid enters the top of the second guide plate from the top of the gas-liquid separation plate, and is guided by the second guide plate and the third guide plate and discharged from the gas outlet pipe;

[0018] S5. The vaporized refrigerant enters the liquefaction spiral tube from the gas outlet pipe, further liquefies the water vapor inside the vaporized refrigerant, and flows back to the inside of the economizer tank along the liquefaction spiral tube.

[0019] The beneficial effects of the present invention are:

[0020] 1. The interior of the float is a hollow structure, which moves up and down following the refrigerant injected into the economizer tank. The float moves along with the liquid level, driving the liquid level control rod to move up and down. The first gear rotates along with the movement of the liquid level control rod, and the second gear rotates synchronously with the first gear. The purpose of judging the liquid level height is to observe the rotation angle of the second gear.

[0021] 2. The gas-liquid separation plate is an L-shaped structure, so that when the refrigerant flows along the first guide plate, the side of the gas-liquid separation plate filters the refrigerant for the first time. When the refrigerant accumulates to a certain extent, the refrigerant on the top of the gas-liquid separation plate is further filtered to achieve the purpose of double filtration and vaporization;

[0022] 3. The liquefied spiral tube is a spiral structure, which liquefies the vaporized refrigerant when flowing inside the liquefied spiral tube, performs secondary liquefaction on the vaporized refrigerant, and the refrigerant flows back along the liquefied spiral tube to the surface of the third guide plate, and is guided into the economizer tank through the third guide plate and the second guide plate for further vaporization.

[0023] In summary, the structure of the present invention can better solve the problem that most traditional flash drum economizers are difficult to control the liquid level inside the flash drum economizer, and the refrigeration liquid vaporization effect is not good, resulting in reduced refrigeration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the flash drum economizer of the present invention;

[0025] Figure 2 It is a cross-sectional view of the flash drum economizer structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the internal structure of the flash drum economizer of the present invention;

[0027] Figure 4 It is a schematic diagram of the structure of the liquid level control mechanism of the present invention;

[0028] Figure 5 It is a schematic diagram of the structure of the liquefied spiral tube of the present invention;

[0029] Figure 6 It is a schematic diagram of the economizer tank structure of the present invention.

[0030] Numbers in the figure: 1. Economizer tank; 2. Tank flange; 3. Tank base; 4. First guide plate; 5. Gas-liquid separation plate; 6. Filter hole; 7. Second guide plate; 8. Third guide plate; 9. Air outlet pipe; 10. Air outlet flange; 11. Liquefaction cylinder; 12. Liquefaction spiral pipe; 13. Liquid inlet pipe; 14. Liquid outlet pipe; 15. Base fixing hole; 16. Liquid level control box; 17. Liquid level control lever; 18. Tooth groove; 19. First gear; 20. Second gear; 21. Lifting rod; 22. Float. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] Reference Figure 1-Figure 6 A flash drum economizer with automatic mechanical liquid level control comprises an economizer tank body 1, tank flanges 2 are installed on both sides of the economizer tank body 1, the tank flanges 2 are used to seal the economizer tank body 1, and a tank base 3 is arranged on the top of the economizer tank body 1, a first guide plate 4 is arranged on the bottom of the economizer tank body 1, and a second guide plate 7 is installed on one side of the top of the first guide plate 4, a third guide plate 8 is arranged on one side of the second guide plate 7, and a gas-liquid separation plate 5 is arranged on one side of the first guide plate 4, the gas-liquid separation plate 5 is used to perform gas-liquid separation treatment on the refrigerant, a liquid level control mechanism is arranged on one side of the top of the economizer tank body 1, and an air outlet pipe 9 is connected to the other side of the top of the economizer tank body 1, a liquefaction cylinder 11 is arranged on the top of the air outlet pipe 9, a liquefaction spiral tube 12 is installed inside the liquefaction cylinder 11, and the liquefaction spiral tube 12 is used to further liquefy the vaporized refrigerant.

[0033] Reference Figure 3 and Figure 4The liquid level control mechanism includes a liquid level control box 16, and the liquid level control box 16 is installed on one side of the top of the economizer tank body 1. A liquid level control rod 17 is arranged inside the liquid level control box 16, and a tooth groove 18 is provided on one side of the liquid level control rod 17. A first gear 19 is arranged inside the liquid level control box 16, and a second gear 20 is installed on one side of the first gear 19. A lifting rod 21 is connected to the bottom of the liquid level control rod 17, and a floating ball 22 is installed at the bottom of the lifting rod 21. The inside of the floating ball 22 is a hollow structure, which moves up and down following the refrigerant injected into the economizer tank body 1. The liquid level control rod 17 runs through the inside of the economizer tank body 1, and the lifting rod 21 The lifting rod 21 is moved up and down by the movement of the float 22, and the liquid level control rod 17 moves following the lifting rod 21. The shape and size of the tooth groove 18 on one side of the liquid level control rod 17 match the first gear 19, and the first gear 19 and the second gear 20 are meshed with each other. When the liquid level control rod 17 moves up and down, the first gear 19 rotates by meshing with the liquid level control rod 17, and the first gear 19 and the second gear 20 rotate inside the liquid level control box 16, and the second gear 20 rotates following the first gear 19, so as to achieve the purpose of judging the liquid level height by observing the rotation angle of the second gear 20.

[0034] Reference Figure 6 A liquid inlet pipe 13 is provided on one side of the economizer tank body 1, and the liquid inlet pipe 13 is used to inject refrigerant liquid into the economizer tank body 1, and a liquid outlet pipe 14 is connected to one side of the bottom of the economizer tank body 1, and the liquid outlet pipe 14 is used to discharge excess refrigerant liquid. The economizer tank body 1 and the tank flange 2 are fixedly connected by bolts, and the tank flange 2 is symmetrically installed on both sides of the economizer tank body 1, and base fixing holes 15 are symmetrically opened on both sides of the bottom of the tank base 3, and the tank base 3 is fixedly installed by using bolts corresponding to the base fixing holes 15.

[0035] Reference Figure 2 and Figure 3 The first guide plate 4, the second guide plate 7 and the third guide plate 8 are of an inclined structure, and a filter hole 6 is provided inside the gas-liquid separation plate 5. The filter hole 6 is a honeycomb structure, which can better improve the effect of vaporization of the refrigerant liquid. The gas-liquid separation plate 5 is of an L-shaped structure, so that when the refrigerant liquid flows along the first guide plate 4, the side of the gas-liquid separation plate 5 filters the refrigerant liquid for the first time. After the refrigerant liquid accumulates to a certain extent, the refrigerant liquid on the top of the gas-liquid separation plate 5 is further filtered to achieve the purpose of double filtering and vaporization.

[0036] Reference Figure 2 and Figure 5An outlet flange 10 is installed between the outlet pipe 9 and the liquefaction cylinder 11, and the liquefaction spiral tube 12 is a spiral structure, so that the vaporized refrigerant liquid is liquefied when flowing inside the liquefaction spiral tube 12. One end of the liquefaction spiral tube 12 is connected to the outlet pipe 9, and the other end of the liquefaction spiral tube 12 is connected to the top of the liquefaction cylinder 11. The liquefied refrigerant liquid flows back to the inside of the economizer tank 1 along the liquefaction spiral tube 12 to be further vaporized.

[0037] In this embodiment, during installation, the base fixing holes 15 opened inside the tank base 3 are installed at appropriate positions by bolts, the economizer tank 1 is fixedly installed, the tank flange 2 is installed corresponding to both sides of the economizer tank 1, and then the first guide plate 4, the second guide plate 7 and the third guide plate 8 are installed inside the economizer tank 1 respectively, and the height of the liquid level control rod 17 is adjusted so that one side of the float 22 is attached to the top of the first guide plate 4, and the installation process is completed; when in use, the refrigerant enters the economizer tank 1 from the liquid inlet pipe 13, so that the refrigerant flows along the first guide plate 4. The side of the gas-liquid separation plate 5 performs the first filtration on the refrigerant liquid. After the refrigerant liquid accumulates to a certain extent, the top of the gas-liquid separation plate 5 further filters the refrigerant liquid. The vaporized refrigerant liquid enters the top of the second guide plate 7 from the top of the gas-liquid separation plate 5, is guided by the second guide plate 7 and the third guide plate 8, is discharged from the air outlet pipe 9, and enters the inside of the liquefaction spiral tube 12, so that the vaporized refrigerant liquid is liquefied when flowing in the inside of the liquefaction spiral tube 12. The liquefied refrigerant liquid flows along the liquefaction spiral tube 12, is guided by the third guide plate 8 and the second guide plate 7, and flows back to the inside of the economizer tank 1 for further vaporization, thereby improving the vaporization efficiency of the refrigerant liquid.

[0038] A control method for a flash drum economizer with automatic mechanical liquid level control comprises the following steps:

[0039] S1. After the economizer tank body 1 is installed to a suitable position through the tank body base 3, the first material guide plate 4, the second material guide plate 7 and the third material guide plate 8 are installed inside the economizer tank body 1 respectively;

[0040] S2. Lower the liquid level control rod 17 to the lowest position, so that one side of the float 22 is in contact with the top of the first guide plate 4, and the tank flange 2 is fixed on both sides of the economizer tank 1 by bolts;

[0041] S3, the refrigerant enters the economizer tank 1 from the liquid inlet pipe 13, and then is guided by the first guide plate 4 to flow into the side of the gas-liquid separation plate 5, and the gas-liquid separation is achieved through the filter holes 6 opened inside the gas-liquid separation plate 5, and the excess refrigerant flows out from the liquid outlet pipe 14;

[0042] S4, the vaporized refrigerant liquid enters the top of the second guide plate 7 from the top of the gas-liquid separation plate 5, and is guided by the second guide plate 7 and the third guide plate 8 and discharged from the gas outlet pipe 9;

[0043] S5, the vaporized refrigerant enters the liquefaction spiral tube 12 from the gas outlet pipe 9, further liquefies the water vapor inside the vaporized refrigerant, and flows back to the inside of the economizer tank 1 along the liquefaction spiral tube 12.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A flash drum economizer with automatic mechanical liquid level control, comprising an economizer tank (1), characterized in that: Tank flanges (2) are installed on both sides of the economizer tank (1), and a tank base (3) is arranged on the top of the economizer tank (1). A first material guide plate (4) is arranged on the bottom of the economizer tank (1), and a second material guide plate (7) is installed on one side of the top of the first material guide plate (4), a third material guide plate (8) is arranged on one side of the second material guide plate (7), and a gas-liquid separation plate (5) is arranged on one side of the first material guide plate (4). A liquid level control mechanism is arranged on one side of the top of the economizer tank (1), and an air outlet pipe (9) is connected to the other side of the top of the economizer tank (1). A liquefaction cylinder (11) is arranged on the top of the air outlet pipe (9), and a liquefaction spiral pipe (12) is installed inside the liquefaction cylinder (11).

2. A flash drum economizer with automatic mechanical liquid level control according to claim 1, characterized in that: The liquid level control mechanism comprises a liquid level control box (16), and the liquid level control box (16) is installed on one side of the top of the economizer tank (1); a liquid level control rod (17) is arranged inside the liquid level control box (16), and a tooth groove (18) is provided on one side of the liquid level control rod (17); a first gear (19) is arranged inside the liquid level control box (16), and a second gear (20) is installed on one side of the first gear (19); a lifting rod (21) is connected to the bottom of the liquid level control rod (17), and a floating ball (22) is installed at the bottom end of the lifting rod (21).

3. A flash drum economizer with automatic mechanical liquid level control according to claim 2, characterized in that: The liquid level control rod (17) penetrates the inside of the economizer tank (1), and the lifting rod (21) and the liquid level control rod (17) are collinear with each other, and the inside of the float (22) is a hollow structure.

4. A flash drum economizer with automatic mechanical liquid level control according to claim 2, characterized in that: The tooth groove (18) formed on one side of the liquid level control rod (17) matches the first gear (19) in shape and size, and the first gear (19) and the second gear (20) are meshed with each other, and the first gear (19) and the second gear (20) rotate inside the liquid level control box (16).

5. A flash drum economizer with automatic mechanical liquid level control according to claim 1, characterized in that: A liquid inlet pipe (13) is provided on one side of the economizer tank body (1), and a liquid outlet pipe (14) is connected to one side of the bottom of the economizer tank body (1).

6. A flash drum economizer with automatic mechanical liquid level control according to claim 1, characterized in that: The first material guide plate (4), the second material guide plate (7) and the third material guide plate (8) are of an inclined structure, and a filter hole (6) is provided inside the gas-liquid separation plate (5), and the gas-liquid separation plate (5) is of an L-shaped structure.

7. A flash drum economizer with automatic mechanical liquid level control according to claim 1, characterized in that: An air outlet flange (10) is installed between the air outlet pipe (9) and the liquefaction cylinder (11), and the liquefaction spiral pipe (12) is a spiral structure. One end of the liquefaction spiral pipe (12) is connected to the air outlet pipe (9), and the other end of the liquefaction spiral pipe (12) is connected to the top of the liquefaction cylinder (11).

8. A flash drum economizer with automatic mechanical liquid level control according to claim 1, characterized in that: The economizer tank body (1) and the tank body flange (2) are fixedly connected by bolts, and the tank body flange (2) is symmetrically installed on both sides of the economizer tank body (1). Base fixing holes (15) are symmetrically opened on both sides of the bottom of the tank body base (3).

9. A control method for a flash drum economizer with automatic mechanical liquid level control according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. After the economizer tank body (1) is installed at a suitable position through the tank body base (3), the first material guide plate (4), the second material guide plate (7) and the third material guide plate (8) are respectively installed inside the economizer tank body (1); S2. Lower the liquid level control rod (17) to the lowest position so that one side of the float (22) is in contact with the top of the first guide plate (4), and fix the tank flange (2) on both sides of the economizer tank (1) with bolts; S3, the refrigerant liquid enters the economizer tank (1) from the liquid inlet pipe (13), is then guided by the first material guide plate (4), flows into one side of the gas-liquid separation plate (5), and passes through the filter holes (6) provided inside the gas-liquid separation plate (5) to achieve the purpose of gas-liquid separation, and the excess refrigerant liquid flows out from the liquid outlet pipe (14); S4, the vaporized refrigerant liquid enters the top of the second guide plate (7) from the top of the gas-liquid separation plate (5), is guided by the second guide plate (7) and the third guide plate (8), and is discharged from the gas outlet pipe (9); S5. The vaporized refrigerant enters the liquefaction spiral tube (12) from the gas outlet pipe (9), further liquefies the water vapor inside the vaporized refrigerant, and flows back to the inside of the economizer tank (1) along the liquefaction spiral tube (12).

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