Low-pressure steam generator

Abstract

The utility model provides a low-pressure steam generator. The low-pressure steam generator comprises a tank body, a partition plate, a baffle and a heat exchange pipe. The partition plate is arranged on the circumferential side wall of the tank body and divides an inner cavity of the tank body into a high-pressure cavity and a low-pressure cavity which are distributed in the axial direction. The baffle is arranged on the circumferential side wall of the low-pressure cavity and divides a liquid storage tank and a water return tank which are distributed in the axial direction in the low-pressure cavity, and the liquid level of soft water in the liquid storage tank is parallel to the axis of the low-pressure cavity; the heat exchange pipe is arranged in the liquid storage tank, and the two ends of the heat exchange pipe are both connected and communicated with the high-pressure cavity. The axis of the tank body is parallel to the liquid level, the surface area of liquid can be increased, and the evaporation speed is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steam generator, in particular to a low-pressure steam generator. BACKGROUND

[0002] In the deep processing of oil refining, low-pressure steam is usually used to heat oil. The traditional low-pressure steam generator is usually of vertical structure, that is, the axis of the tank body of the low-pressure steam generator is perpendicular to the liquid surface, which results in a small surface area of the liquid and a slow evaporation speed. Therefore, the present application provides a low-pressure steam generator. CONTENT OF THE PRESENT INVENTION

[0003] The present application provides a low-pressure steam generator, which has the axis of the tank body parallel to the liquid surface, so as to increase the surface area of the liquid and improve the evaporation speed.

[0004] The technical scheme of the present application is as follows:

[0005] The present application provides a low-pressure steam generator, which comprises a tank body, a partition plate, a baffle and a heat exchange pipe.

[0006] The partition plate is arranged on the circumferential side wall of the tank body, and the partition plate divides the inner cavity of the tank body into a high-pressure cavity and a low-pressure cavity which are distributed along the axial direction.

[0007] The baffle is arranged on the circumferential side wall of the low-pressure cavity, and the baffle divides the low-pressure cavity into a liquid storage groove and a water return groove which are distributed along the axial direction. The liquid surface of the soft water in the liquid storage groove is parallel to the axis of the low-pressure cavity.

[0008] The heat exchange pipe is arranged in the liquid storage groove, and both ends of the heat exchange pipe are connected and communicated with the high-pressure cavity.

[0009] According to the technical scheme of the present application, the high-pressure steam enters and exits the heat exchange pipe in the high-pressure cavity, and the soft water in the liquid storage groove is heated in the low-pressure cavity to form low-pressure steam. The liquid surface of the soft water is parallel to the axis of the low-pressure cavity, so as to increase the surface area of the soft water and improve the evaporation speed.

[0010] In some implementations, the high-pressure cavity is circular in cross section.

[0011] In some implementations, a transverse plate is arranged in the high-pressure cavity, and the transverse plate divides the high-pressure cavity into an air inlet cavity and an air outlet cavity.

[0012] In some implementations, the transverse plate is arranged at the axis of the high-pressure cavity.

[0013] In some implementations, the low-pressure cavity is circular in cross section.

[0014] In some implementations, the axis of the low-pressure cavity is parallel to the axis of the high-pressure cavity.

[0015] In some implementations, the axis of the low-pressure cavity is arranged in a staggered manner with the axis of the high-pressure cavity.

[0016] In some implementations, the liquid storage tank is provided with a support plate.

[0017] In some implementations, a liquid passage is formed between the support plate and the tank bottom of the liquid storage tank.

[0018] In some implementations, the support plates are uniformly distributed along the extension direction of the liquid storage tank. BRIEF DESCRIPTION OF DRAWINGS

[0019] 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, but not to limit the scope of the present application, in the drawings:

[0020] Figure 1 is a schematic view of a low-pressure steam generator according to an embodiment of the present application;

[0021] REFERENCE NUMERALS

[0022] 10, tank body; 11, high-pressure cavity; 111, transverse plate; 12, low-pressure cavity; 13, liquid storage tank; 14, water return tank; 15, air inlet cavity; 16, air outlet cavity; 17, support plate; 18, liquid passage hole;

[0023] 20, partition plate;

[0024] 30, baffle plate;

[0025] 40, heat exchange pipe; DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with reference to the accompanying drawings and embodiments, it should be understood that the specific embodiments described here are only used to explain the present application, and are not used to limit the present application.

[0027] In the related art, during the deep processing of oil refining, low-pressure steam is usually used to heat oil, and the traditional low-pressure steam generator is mostly of vertical structure, that is, the axis of the tank body of the low-pressure steam generator is perpendicular to the liquid surface, resulting in a small surface area of the liquid and a slow evaporation speed.

[0028] The present embodiment provides a low-pressure steam generator, which arranges the axis of the tank body in parallel with the liquid surface, so as to increase the surface area of the liquid and improve the evaporation speed.

[0029] Please refer to Figure 1In the embodiment, a low-pressure steam generator comprises a tank body 10, a partition plate 20, a baffle 30 and a heat exchange pipe 40; the partition plate 20 is arranged on the circumferential sidewall of the tank body 10, and the partition plate 20 divides the inner cavity of the tank body 10 into a high-pressure cavity 11 and a low-pressure cavity 12 which are distributed along the axial direction; the baffle 30 is arranged on the circumferential sidewall of the low-pressure cavity 12, and the baffle 30 divides the low-pressure cavity 12 into a liquid storage groove 13 and a water return groove 14 which are distributed along the axial direction, and the liquid surface of the soft water in the liquid storage groove 13 is parallel to the axis of the low-pressure cavity 12; the heat exchange pipe 40 is arranged in the liquid storage groove 13, and both ends of the heat exchange pipe 40 are connected with and communicated with the high-pressure cavity 11.

[0030] By adopting the technical scheme in the embodiment, the high-pressure steam enters and flows out of the heat exchange pipe 40 in the high-pressure cavity 11, and the soft water in the liquid storage groove 13 is heated in the low-pressure cavity 12 to form low-pressure steam, and the liquid surface of the soft water is parallel to the axis of the low-pressure cavity 12, so that the surface area of the soft water is increased, which is beneficial to improving the evaporation speed.

[0031] In the embodiment, the tank body 10 is designed as a horizontal type, that is, the axis of the tank body 10 is kept horizontal, the partition plate 20 divides the inner cavity of the tank body 10 into the high-pressure cavity 11 and the low-pressure cavity 12 which are independent of each other, the partition plate 20 is perpendicular to the axis of the tank body 10, the high-pressure cavity 11 and the low-pressure cavity 12 both extend along the axial direction of the tank body 10, and both of them are circular in cross section, their axes are arranged in parallel, and their axes are kept staggered.

[0032] Specifically, a horizontal transverse plate 111 is fixedly connected inside the high-pressure cavity 11, the transverse plate 111 divides the high-pressure cavity 11 into an air inlet cavity 15 and an air outlet cavity 16 which are independent of each other, the transverse plate 111 is arranged at the axis of the high-pressure cavity 11, the air inlet cavity 15 is located above the air outlet cavity 16, the sidewall of the tank body 10 is provided with a high-pressure steam inlet which is communicated with the air inlet cavity 15, and a high-pressure steam outlet which is communicated with the air outlet cavity 16.

[0033] In the embodiment, the baffle 30 is fixedly connected on the circumferential sidewall of the low-pressure cavity 12, and the baffle 30 is perpendicular to the axis of the low-pressure cavity 12, the baffle 30 is integrally designed as an arc-shaped plate, the baffle 30 is arranged at the bottom of the circumferential sidewall of the low-pressure cavity 12, and divides the low-pressure cavity 12 into the liquid storage groove 13 and the water return groove 14, the liquid storage groove 13 is used for containing soft water, and the liquid storage groove 13 is provided with a soft water inlet at the groove bottom, and the water return groove 14 is provided with a soft water outlet at the groove bottom, and the low-pressure steam outlet is arranged at the top of the low-pressure cavity 12.

[0034] In addition, a plurality of support plates 17 are fixedly connected inside the liquid storage tank 13, and the plurality of support plates 17 are uniformly distributed along the extension direction of the liquid storage tank 13. The support plates 17 are configured in an arc-shaped plate shape. There is a liquid passage 18 between the support plates 17 and the tank bottom of the liquid storage tank 13. The liquid passage 18 is used to keep the overall liquid level in the liquid storage tank 13 consistent. The top of the baffle 30 and the plurality of support plates 17 are generally located at the axis of the low-pressure cavity 12.

[0035] In this embodiment, the heat exchange pipe 40 is configured in a U-shaped pipe shape as a whole. The heat exchange pipe 40 is arranged inside the liquid storage tank 13. The heat exchange pipe 40 penetrates the baffle 30 and the plurality of support plates 17. The two ends of the heat exchange pipe 40 are connected and communicated with the high-pressure cavity 11. Specifically, the gas inlet of the heat exchange pipe 40 is connected and communicated with the gas inlet cavity 15. The gas outlet of the heat exchange pipe 40 is connected and communicated with the gas outlet cavity 16.

[0036] It should be noted that the high-pressure steam flows into the gas inlet cavity 15 through the high-pressure steam inlet, and after flowing through the heat exchange pipe 40, it flows into the gas outlet cavity 16, and finally flows out through the high-pressure steam outlet, forming a high-pressure steam loop. The soft water flows into the inside of the liquid storage tank 13 through the soft water inlet, and the heat exchange pipe 40 in the liquid storage tank 13 is submerged. When the high-pressure steam flows through the heat exchange pipe 40, it will heat the soft water in the liquid storage tank 13. After the soft water is heated and evaporated, low-pressure steam will be formed in the low-pressure cavity 12. The low-pressure steam is discharged to the inside of the gas tank through the low-pressure steam outlet. The soft water produced by the condensation of the low-pressure steam in the low-pressure cavity will flow into the water return tank 14 and be discharged through the soft water outlet.

[0037] It should be understood that in this embodiment, the liquid storage tank 13 is arranged inside the low-pressure cavity 12, and the liquid level of the soft water in the liquid storage tank 13 is parallel to the axis of the low-pressure cavity 12. Compared with the arrangement mode in which the liquid level is perpendicular to the axis, the surface area of the liquid can be increased, thereby facilitating the increase of the evaporation speed.

[0038] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present application.

Claims

1. A low pressure steam generator characterized by, The low-pressure steam generator comprises: a tank body; a partition plate arranged on the circumferential side wall of the tank body, which separates the inner cavity of the tank body into a high-pressure cavity and a low-pressure cavity distributed along the axial direction; a baffle plate arranged on the circumferential side wall of the low-pressure cavity, which separates the low-pressure cavity into a liquid storage groove and a water return groove distributed along the axial direction, and the liquid surface of the soft water in the liquid storage groove is parallel to the axis of the low-pressure cavity; a heat exchange pipe arranged in the liquid storage groove, both ends of the heat exchange pipe are connected with and communicated with the high-pressure cavity.

2. The low-pressure steam generator according to claim 1, wherein the high-pressure cavity is circular in cross section.

3. The low-pressure steam generator according to claim 2, wherein a transverse plate is arranged in the high-pressure cavity, which separates the high-pressure cavity into an inlet cavity and an outlet cavity.

4. The low-pressure steam generator according to claim 3, wherein the transverse plate is arranged at the axis of the high-pressure cavity.

5. The low-pressure steam generator according to claim 4, wherein the low-pressure cavity is circular in cross section.

6. The low-pressure steam generator according to claim 5, wherein the axis of the low-pressure cavity is arranged in parallel with the axis of the high-pressure cavity.

7. The low-pressure steam generator according to claim 6, wherein the axis of the low-pressure cavity is arranged in staggered position with the axis of the high-pressure cavity.

8. The low-pressure steam generator according to claim 7, wherein a support plate is arranged in the liquid storage groove.

9. The low-pressure steam generator according to claim 8, wherein there is a liquid passage between the support plate and the groove bottom of the liquid storage groove.

10. The low-pressure steam generator according to claim 9, wherein the support plate is uniformly distributed along the extension direction of the liquid storage groove.

Images