A vacuum pump water distribution tank for oil refining vacuum system

Abstract

The utility model relates to the technical field of vacuum pump water separation, and proposes a vacuum pump water separation tank for an oil refining vacuum system, including a horizontal tank and a cooling pipe, the cooling pipe including two coils and a connecting pipe, the coil is arranged in the tank body, the two coils are stacked and spaced, the two first openings correspond to the two liquid passing pipes one by one and are sealed and connected; the two ends of the connecting pipe are respectively sealed and fixed on the two second openings, and are connected to the coils. The utility model arranges the coils into two in a stacked and spaced manner, and connects the two first openings with the two liquid passing pipes, and connects the two second openings, so that the end of one coil with a relatively high temperature is close to the end of the other coil with a relatively low temperature, so that the cooling water in the coil can be heat exchanged and neutralized, thereby reducing the temperature difference of the cooling water in the cooling pipe and ensuring the heat exchange uniformity of the water separation tank.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum pump water separation, in particular to a vacuum pump water separation tank for a grease refining vacuum system. Background Art

[0002] In the deodorization process of oil refining, a vacuum pump is needed to extract the steam in the reaction tower to supply it to the next step. The moisture in the steam will affect the normal operation of the next step. Therefore, a water separation tank is needed to be set between the vacuum pump and the equipment of the next step to separate the moisture in the steam so that the deodorization process can be smoothly implemented.

[0003] The utility model with patent publication number CN210569383U discloses a horizontal condenser, which relates to the technical field of horizontal condensers, and is designed to solve the problems of poor safety warning performance, poor heat exchange effect and poor discharge of condensed materials in existing horizontal condensers. Two shells are provided, an expansion joint is provided between the two shells, a support frame is provided below the shell, an ammonia liquid outlet pipe is provided on one side of the buffer collection tank, an ammonia gas inlet pipe is provided on one side above the shell, a vent is provided on one side of the safety valve, a pressure gauge is provided between the safety valve and the vent, a cooling water outlet pipe is provided on one side of the shell, a cooling water inlet pipe is provided below the cooling water outlet pipe, a spiral coil is provided inside the shell, two cyclone breaking mechanisms are provided, the insulation jacket is located outside the cyclone breaking mechanism, the drain pipe is located below the cyclone breaking mechanism, and a venting tank is provided between the insulation jacket and the cyclone breaking mechanism.

[0004] In the above technical solution, in order to condense the moisture in the steam into liquid and separate it, a spiral coil for conveying cooling water is arranged in the outer shell. However, due to the large stroke of the spiral coil and the continuous heat exchange of the cooling water when flowing in the spiral coil, the temperature difference between the end of the spiral coil close to the cooling water outlet pipe and the end close to the cooling water inlet pipe is large, which is not conducive to ensuring the uniformity of heat exchange inside the condenser, thereby affecting its condensation effect. Utility Model Content

[0005] In view of this, the utility model proposes a vacuum pump water separation tank for an oil refining vacuum system, which can reduce the temperature difference of cooling water in a cooling pipe and ensure the uniformity of heat exchange inside the water separation tank.

[0006] The technical solution of the utility model is implemented as follows: The utility model provides a vacuum pump water distribution tank for a vacuum system of oil refining, comprising a horizontal tank and a cooling pipe, wherein:

[0007] The horizontal tank comprises a tank body, two ventilation pipes and two liquid pipes, wherein:

[0008] The vent pipe is sealed and fixed on the top side of the tank body and is connected with the interior thereof;

[0009] The liquid passage pipe penetrates and is fixed on the tank body;

[0010] The cooling pipe includes two coils and a connecting pipe, wherein:

[0011] The coil is arranged in the tank body, one end of which is a first opening and the other end is a second opening, two coils are stacked and arranged at intervals, and the two first openings correspond to the two liquid pipes one by one and are sealed and connected;

[0012] The two ends of the connecting pipe are respectively sealed and fixed on the two second openings and are connected with the coil.

[0013] On the basis of the above technical solution, preferably, the coil is a continuous S-shaped tubular structure, and the center line of the coil is parallel to the horizontal plane.

[0014] More preferably, the two coils are arranged side by side and at intervals in the vertical direction.

[0015] More preferably, a liquid passage is arranged on the top side of the tank body and is connected with the first opening located above;

[0016] Another liquid passage is arranged below the end of the tank body and is communicated with the first opening located below.

[0017] More preferably, the horizontal tank further comprises a viewing window, which is fixedly arranged at one end of the tank body away from the liquid passage pipe and is used for an inspector to observe the interior of the tank body.

[0018] More preferably, the first opening and the second opening are located at the same end of the coil along the axial direction of the tank body.

[0019] On the basis of the above technical solution, preferably, the horizontal tank further includes two support plates, and the cooling pipe further includes limiting protrusions, wherein:

[0020] The support plate is fixedly arranged on the bottom side of the tank body, and the coil is against the top side of the support plate;

[0021] The limiting protrusion is fixedly arranged on the bottom side of the coil and is clamped with the support plate.

[0022] More preferably, a plurality of the limiting protrusions are provided, and a side of each of the support plates close to another support plate abuts against the limiting protrusion.

[0023] On the basis of the above technical solution, preferably, the horizontal tank further comprises a drain pipe, which is sealed and fixedly arranged on the bottom side of the tank body and communicated with the interior thereof.

[0024] More preferably, the horizontal tank further includes a water supply pipe and a water discharge pipe, wherein:

[0025] The water supply pipe is fixed on the peripheral side of the tank body and is used to supply water into the tank body;

[0026] The water discharge pipe is fixed through the peripheral side of the tank body and is located below the water supply pipe and above the drainage pipe, so as to control the amount of water in the tank body.

[0027] The utility model of a vacuum pump water separation tank for a vacuum system of oil refining has the following beneficial effects compared with the prior art:

[0028] (1) The coils are arranged in two layers in a stacked and spaced manner, and the two first openings are connected to the two liquid pipes, and the two second openings are connected to each other, so that the end of one coil with a relatively high temperature is close to the end of the other coil with a relatively low temperature, so that the cooling water in the coil can be heat exchanged and neutralized, thereby reducing the temperature difference of the cooling water in the cooling pipe and ensuring the heat exchange uniformity of the water distribution tank;

[0029] (2) By arranging the liquid-passing pipe and the connecting pipe at one end of the tank body and arranging the viewing window at the other end of the tank body, the number of components that can be observed in the viewing window can be maximized, so as to comprehensively monitor the normal operation of the water distribution tank;

[0030] (3) By setting the limiting protrusion, not only can the cooling pipe be positioned when installing the cooling pipe to improve its installation efficiency, but the position of the cooling pipe can also be limited during the welding process to prevent the cooling pipe from shifting due to heat, thereby reducing the processing error of the water distribution tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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.

[0032] Figure 1 It is a cross-sectional view of a vacuum pump water distribution tank for a vacuum system of oil refining of the utility model;

[0033] Figure 2 for Figure 1 Sectional view at the middle BB;

[0034] Figure 3 for Figure 1 Sectional view at AA in the middle;

[0035] Figure 4 This is an exploded view of a cooling pipe in a water distribution tank of a vacuum pump for a vacuum system for oil refining according to the utility model;

[0036] Figure 5 for Figure 4 Enlarged view of point C in the middle.

[0037] Among them: 1. horizontal tank; 11. tank body; 12. ventilation pipe; 13. liquid pipe; 14. window; 15. support plate; 16. drainage pipe; 17. water supply pipe; 18. drain pipe; 2. cooling pipe; 21. coil; 22. connecting pipe; 23. limiting protrusion; 201. first opening; 202. second opening. DETAILED DESCRIPTION

[0038] 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.

[0039] like Figure 1-5 As shown, a vacuum pump water distribution tank for a vacuum system of oil refining of the utility model comprises a horizontal tank 1 and a cooling pipe 2.

[0040] Among them, the horizontal tank 1 is used to provide an environment for the water separation operation. The horizontal tank 1 includes a tank body 11, two ventilation pipes 12 and two liquid pipes 13, wherein the ventilation pipe 12 is sealed and fixed on the top side of the tank body 11 and is connected with the interior thereof. The two ventilation pipes 12 are respectively connected with the vacuum pump and the equipment of the next step of the oil refining and deodorization process, and are used to input steam into the tank body 11 and output high-temperature gas from the tank body 11; the liquid pipe 13 is fixed through the tank body 11, and the two liquid pipes 13 are connected with the cooling water circulation equipment, and are used to circulate cooling water into the tank body 11.

[0041] The cooling pipe 2 is used to circulate cooling water in the tank 11. Figure 4As shown, the cooling pipe 2 includes two coils 21 and a connecting pipe 22, wherein the coil 21 is arranged in the tank body 11, one end of which is a first opening 201, and the other end is a second opening 202, the two coils 21 are stacked and arranged at intervals, the two first openings 201 correspond to the two liquid pipes 13 one by one and are sealed and connected; the two ends of the connecting pipe 22 are sealed and fixed on the two second openings 202, respectively, and are connected with the coils 21; when the cooling water flows into the tank body 11 through the liquid pipe 13, it flows through the first opening 201 of the first coil 21, the second opening 202 of the first coil 21, the connecting pipe 22, the second opening 202 of the second coil 21 and the first opening 201 of the second coil 21 in sequence, because the temperature of the cooling water will continue to rise during the flow process, therefore, the cooling water The temperature arrangement of the positions should be: the first opening 201 of the first coil 21 < the second opening 202 of the first coil 21 < the second opening 202 of the second coil 21 < the first opening 201 of the second coil 21. Since the two coils 21 are stacked, that is, the first opening 201 of the first coil 21 is adjacent to the first opening 201 of the second coil 21, and the second opening 202 of the first coil 21 is adjacent to the second opening 202 of the second coil 21, heat exchange will also occur between adjacent coils 21, so that the temperature of the cooling water is neutralized, thereby avoiding the problem of uneven condensation effect of the water distribution tank caused by excessive temperature difference of the cooling water. In addition, by arranging two coils 21, the surface area of ​​the cooling tube 2 can also be increased, thereby improving its heat exchange performance.

[0042] In order to increase the contact area between the coil 21 and the steam, Figure 3 As shown, the coil 21 is preferably a continuous S-shaped tubular structure. Since the ventilation pipe 12 is arranged on the top side of the tank body 11, in order to allow the coil 21 to better contact the steam, it is preferred that the center line of the coil 21 is parallel to the horizontal plane, that is, it is arranged in a horizontal manner; correspondingly, the two coils 21 are arranged side by side and at intervals in the vertical direction to enhance the condensation effect on the steam.

[0043] like Figure 2 As shown, one liquid pipe 13 is arranged on the top side of the tank body 11 and is connected to the first opening 201 located at the top; another liquid pipe 13 is arranged below the end of the tank body 11 and is connected to the first opening 201 located at the bottom, that is, the cooling water flows from bottom to top, and the device complies with the design principle of cold down and hot up in the heat exchange system.

[0044] In order to monitor the operation status in the water distribution tank in real time, the horizontal tank 1 also includes a window 14, which is used for the inspection personnel to observe the interior of the tank body 11. The window 14 is fixedly arranged at one end of the tank body 11 away from the liquid pipe 13. Of course, in order to illuminate the interior of the tank body 11, a corresponding lighting lamp can also be configured.

[0045] like Figure 1 As shown, the viewing window 14 is disposed at the right end of the tank body 11. In order to be able to see as many components as possible in the viewing window 14 and maximize the field of vision, it is preferred that the first opening 201 and the second opening 202 are located at the same end of the coil 21 along the axial direction of the tank body 11, that is, the first opening 201, the second opening 202 and the liquid passage 13 connected thereto are all disposed at the left end of the tank body 11 to avoid obstruction of the view of the viewing window 14.

[0046] The cooling pipe 2 is the most important component in the water distribution tank. It cannot be suspended in the tank body 11, but needs to be supported by other components. The horizontal tank 1 also includes two support plates 15, which are fixedly arranged on the bottom side of the tank body 11, and the coil 21 is abutted against the top side of the support plate 15. The support plate 15 is used to lift and support and fix the cooling pipe 2.

[0047] In order to improve the fixing degree between the cooling tube 2 and the support plate 15 , the cooling tube 2 further includes a limiting protrusion 23 , wherein the limiting protrusion 23 is fixedly arranged on the bottom side of the coil 21 and is clamped with the support plate 15 .

[0048] like Figure 4 and Figure 5 As shown, there are multiple limit protrusions 23, and each support plate 15 has a limit protrusion 23 on one side close to another support plate 15, that is, the limit protrusion 23 is stuck between the two support plates 15, thereby avoiding the coil 21 connected to the limit protrusion 23 from shifting. The setting of this structure can not only facilitate the positioning and installation of the cooling pipe 2, but also avoid the displacement of the cooling pipe 2 due to heat when welding the water dividing tank, thereby ensuring the processing accuracy of the water dividing tank.

[0049] like Figure 1 As shown, the horizontal tank 1 further includes a drain pipe 16 , which is sealed and fixedly disposed on the bottom side of the tank body 11 and communicated with the interior thereof, so as to conveniently discharge the condensed water in the tank body 11 to the outside of the tank body 11 .

[0050] like Figure 1 As shown, the horizontal tank 1 also includes a water supply pipe 17, which is fixed on the peripheral side of the tank body 11 and is used to supply water to the tank body 11. Especially in the initial stage of condensation, a certain amount of water is added to the tank body 11 through the water supply pipe 17, and the contact between the liquid surface and the steam is more conducive to the removal of moisture in the steam. As another use, the water supply pipe 17 can also be used in conjunction with the drain pipe 16 to realize the circulation of water inside the tank body 11, so as to avoid affecting the water distribution efficiency of the water distribution tank due to the increase in temperature.

[0051] The method of arranging water in the tank body 11 has advantages and disadvantages. If the liquid level of the water in the tank body 11 is high, the cooling pipe 2 will be submerged, reducing the water separation performance of the water separation tank. Figure 2 As shown, the horizontal tank 1 also includes a drain pipe 18, which is fixed on the circumferential side of the tank body 11 and is located below the water supply pipe 17 and above the drainage pipe 16. When the liquid level of the water in the tank body 11 is higher than the drain pipe 18, the excess water will be discharged to the outside of the tank body 11 along the drain pipe 18, so that the drain pipe 18 has the function of controlling the amount of water in the tank body 11.

[0052] The method of using the vacuum pump water distribution tank for the oil refining vacuum system of the utility model is as follows:

[0053] First, the two ventilation pipes 12 are connected to the vacuum pump of the oil refining and deodorization process and the equipment of the next process (equipment requiring high-temperature gas) respectively, the lower liquid pipe 13 is connected to the cooling water supply equipment, and the upper liquid pipe 13 is connected to the cooling water recovery equipment, and then the vacuum pump and the cooling water supply and recovery equipment are started to make the cooling water circulate in the cooling pipe 2, and the steam is allowed to contact and condense with the tortuous cooling pipe 2 in the tank body 11, so that the moisture in the steam is liquefied into liquid and retained in the tank body 11, and the remaining high-temperature gas is allowed to enter the equipment of the next process through another ventilation pipe 12. Finally, the water in the tank body 11 can be discharged regularly using the drain pipe 16.

[0054] 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 vacuum pump water separation tank for a vacuum system for oil refining, characterized in that: It comprises a horizontal tank (1) and a cooling pipe (2), wherein: The horizontal tank (1) comprises a tank body (11), two ventilation pipes (12) and two liquid pipes (13), wherein: The vent pipe (12) is sealed and fixed on the top side of the tank body (11) and is connected to the interior thereof; The liquid passage pipe (13) penetrates and is fixed on the tank body (11); The cooling pipe (2) comprises two coils (21) and a connecting pipe (22), wherein: The coil (21) is arranged in the tank body (11), one end of which is a first opening (201) and the other end of which is a second opening (202); two coils (21) are stacked and arranged at intervals; the two first openings (201) correspond to the two liquid passages (13) one by one and are sealed and connected; The two ends of the connecting pipe (22) are respectively sealed and fixed on the two second openings (202) and are connected to the coil (21).

2. A vacuum pump water separation tank for a vacuum system for oil refining as claimed in claim 1, characterized in that: The coil (21) is a continuous S-shaped tubular structure, and the center line of the coil (21) is parallel to the horizontal plane.

3. A vacuum pump water separation tank for a vacuum system for oil refining as claimed in claim 2, characterized in that: The two coils (21) are arranged side by side and at intervals in the vertical direction.

4. A vacuum pump water separation tank for a vacuum system for oil refining as claimed in claim 3, characterized in that: A liquid passage (13) is arranged on the top side of the tank body (11) and is connected to the first opening (201) located above; The other liquid passage (13) is arranged below the end of the tank body (11) and is connected to the first opening (201) located below.

5. A vacuum pump water separation tank for a vacuum system for oil refining as claimed in claim 4, characterized in that: The horizontal tank (1) further comprises a viewing window (14), which is fixedly arranged at one end of the tank body (11) away from the liquid passage pipe (13) and is used for an inspector to observe the interior of the tank body (11).

6. A vacuum pump water separation tank for a vacuum system for oil refining as claimed in claim 5, characterized in that: The first opening (201) and the second opening (202) are located at the same end of the coil (21) along the axial direction of the tank body (11).

7. A vacuum pump water separation tank for a vacuum system for oil refining as claimed in claim 1, characterized in that: The horizontal tank (1) further comprises two support plates (15), and the cooling pipe (2) further comprises a limiting protrusion (23), wherein: The support plate (15) is fixedly arranged on the bottom side of the tank body (11), and the coil (21) is in contact with the top side of the support plate (15); The limiting protrusion (23) is fixedly arranged on the bottom side of the coil (21) and is clamped with the support plate (15).

8. A vacuum pump water separation tank for a vacuum system for oil refining as claimed in claim 7, characterized in that: A plurality of the limiting protrusions (23) are provided, and a side of each support plate (15) close to another support plate (15) abuts against the limiting protrusion (23).

9. The vacuum pump water separation tank for a vacuum system for oil refining as claimed in claim 1, characterized in that: The horizontal tank (1) further comprises a drainage pipe (16), wherein the drainage pipe (16) is sealed and fixedly arranged on the bottom side of the tank body (11) and is connected to the interior thereof.

10. A vacuum pump water separation tank for a vacuum system for oil refining as claimed in claim 9, characterized in that: The horizontal tank (1) further comprises a water supply pipe (17) and a water discharge pipe (18), wherein: The water supply pipe (17) is fixed through the circumference of the tank body (11) and is used to supply water into the tank body (11); The water discharge pipe (18) penetrates and is fixed on the peripheral side of the tank body (11), and is located below the water supply pipe (17) and above the drainage pipe (16), and is used to control the amount of water in the tank body (11).

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