CN215725234U

CN215725234U - Easy abluent small-size steam turbine condenser

Info

Publication number: CN215725234U
Application number: CN202122398050.8U
Authority: CN
Inventors: 汤宜城; 刘国雄
Original assignee: Guangdong Tapai Group Co ltd
Current assignee: Guangdong Tapai Group Co ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-02-01
Anticipated expiration: 2031-09-30

Abstract

The utility model discloses a small-sized steam turbine condenser easy to clean; belongs to the technical field of steam turbine condensers; the technical key points of the device are that the device comprises a condensation chamber, and a front water chamber and a rear water chamber which are respectively positioned at two sides of the condensation chamber and are communicated and connected; the front water chamber is divided into a water inlet chamber positioned at the lower side and a water outlet chamber positioned at the upper side by a transverse partition plate, a vertical partition plate is vertically arranged at the center of the front water chamber, and the water inlet chamber and the water outlet chamber are divided into two symmetrical and independent chambers by the vertical partition plate; the two ends of the transverse partition plate are respectively connected and sealed with the inner wall of the front water chamber and the vertical partition plate, guide plates are welded between the near end parts of the two ends of the plate surface of the transverse partition plate positioned on one side of the water inlet chamber and the corresponding inner wall of the front water chamber and the vertical partition plate, and included angles formed by the guide plates, the inner wall of the front water chamber, the transverse partition plate and the vertical partition plate and positioned in the water inlet chamber are all larger than 90 degrees; the utility model aims to provide the small-sized steam turbine condenser which is reasonable in structure, good in using effect and easy to clean; the heat exchanger is used for heat exchange of the small steam turbine.

Description

Easy abluent small-size steam turbine condenser

Technical Field

The utility model relates to a small-sized steam turbine condenser, in particular to a small-sized steam turbine condenser easy to clean.

Background

The condenser is a heat exchanger for condensing the exhaust steam after the work of the steam turbine into water, the heat exchange efficiency of the condenser determines the exhaust steam condensation effect of the steam turbine, and the condenser is an important guarantee for effectively applying work of the steam in the steam turbine. Due to the attachment influence of the dirt of the circulating cooling water on the heat exchange tube bundle of the condenser in operation, the condensing efficiency of the condenser is reduced, the work efficiency of the steam turbine is reduced, and the steam consumption rate of the electric steam is increased. In order to guarantee the condensation efficiency of the condenser, the heat exchange tube bundle of the condenser is cleaned in various forms currently, the on-line cleaning mode and the off-line cleaning mode are included, and the on-line cleaning mode can effectively guarantee the continuous high-efficiency effect of the condenser. The rubber ball cleaning device is the best equipment for effectively cleaning the condenser cooling pipe in the running process of the steam turbine set, has simple structure and less investment, can be put into use at any time under the condition of continuous work without reducing load, can always keep the cleaning state of the cooling pipe, can prolong the service life of the cooling pipe, lightens the labor intensity and increases the economic benefit. However, in practical application, due to the internal structural characteristics of the condenser and the existence of dead angles for ball collection, the ball collection rate is low, the recovery rate is often lower than 50%, the cleaning effect is poor, and the practical efficiency is seriously affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a small-sized turbine condenser which is reasonable in structure, good in using effect and easy to clean, aiming at the defects of the prior art.

The technical scheme of the utility model is realized as follows: a small-sized steam turbine condenser easy to clean comprises a condensation chamber, a front water chamber and a rear water chamber, wherein the front water chamber and the rear water chamber are respectively positioned on two sides of the condensation chamber and are in conduction connection; the front water chamber is divided into a water inlet chamber positioned at the lower side and a water outlet chamber positioned at the upper side by a transverse partition plate, a vertical partition plate is vertically arranged at the center of the front water chamber, and the water inlet chamber and the water outlet chamber are divided into two symmetrical and independent chambers by the vertical partition plate; the cross slab both ends are connected sealedly with preceding hydroecium inner wall and perpendicular baffle respectively, and the welding has the guide plate between the cross slab face both ends proximal end portion that is located intake chamber one side and the preceding hydroecium inner wall that corresponds and the perpendicular baffle, the guide plate all is greater than 90 with preceding hydroecium inner wall, cross slab and the contained angle that the perpendicular baffle formed and is located the intake chamber.

In the above-mentioned small-size steam turbine condenser easy to clean, the cross slab is separated by the vertical baffle symmetry, and the cross slab that is located vertical baffle both sides comprises first diaphragm and the second diaphragm that parallel and stagger the setting and the swash plate of connecting first diaphragm and second diaphragm.

The free end of the first transverse plate is connected to the inner wall of the middle lower part of the front water chamber, and the free end of the second transverse plate is connected to the side face of the middle upper part of the vertical partition plate.

The other end of the guide plate connected with the vertical partition plate is connected with the contact part of the inclined plate and the second transverse plate and clings to the water inlet end of the nearest row of heat exchange tubes.

In the small-sized steam turbine condenser easy to clean, the guide plates connected with the front water chamber are tightly attached to the water inlet ends of the heat exchange tubes in the nearest row.

In the above-mentioned small-size steam turbine condenser easy to clean, the radial section of guide plate along the preceding hydroecium is linear type or arc.

After the structure is adopted, on the basis of not changing the structure of the front water chamber of the existing condenser, by analyzing the defects of the existing structure and then skillfully adopting the scheme of additionally arranging the guide plate, the problem that the detention dead angle of the rubber ball in a right angle or an acute angle in the water inlet chamber is converted into an obtuse angle larger than the right angle is solved, so that the recovery rate of the rubber ball is stabilized to be more than 95 percent. Therefore, the end difference of the condenser is stably kept below 4.5 ℃, and the condensing efficiency of the steam turbine is effectively guaranteed.

Drawings

The utility model will be further described in detail with reference to examples of embodiments shown in the drawings to which, however, the utility model is not restricted.

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a radial sectional structural view of a front water chamber of the present invention.

In the figure: 1. a condensing chamber; 2. a front water chamber; 3. a rear water chamber; 4. a diaphragm plate; 4a, a first transverse plate; 4b, a second transverse plate; 4c, a sloping plate; 5. a water inlet chamber; 6. a water outlet chamber; 7. a vertical partition plate; 8. a baffle.

Detailed Description

Referring to fig. 1 and 2, the small steam turbine condenser easy to clean of the present invention includes a condensation chamber 1, and a front water chamber 2 and a rear water chamber 3 respectively located at two sides of the condensation chamber 1 and in conduction connection, wherein a plurality of heat exchange tubes are distributed in the condensation chamber 1; the front water chamber 2 is divided into a water inlet chamber 5 positioned on the lower side and a water outlet chamber 6 positioned on the upper side by a transverse partition plate 4, a vertical partition plate 7 is vertically arranged in the center of the front water chamber 2, and the water inlet chamber 5 and the water outlet chamber 6 are divided into two symmetrical and independent chambers by the vertical partition plate 7; the two ends of the transverse partition plate 4 are respectively connected and sealed with the inner wall of the front water chamber 2 and the vertical partition plate 7, and a guide plate 8 is welded between the near end parts of the two ends of the surface of the transverse partition plate 4 positioned on one side of the water inlet chamber 5 and the corresponding inner wall of the front water chamber 2 and the vertical partition plate 7. Of course, the end face of the guide plate is also connected with the wall of the heat exchange tube plate in a sealing way, and welding is preferably adopted. The included angles formed by the guide plate 8, the inner wall of the front water chamber 2, the transverse partition plate 4 and the vertical partition plate 7 and positioned in the water inlet chamber 5 are all larger than 90 degrees.

Based on current steam condensing chamber structure, through practice inspection many times, the phenomenon is piled up to the glueballs that appear in condenser entering water indoor more, combines the characteristics of hydroecium structure, in service glueballs in circulating water, and the analysis is that the glueballs are in the impact state that floats, is stifled in condenser cross slab's corner position, causes the glueballs not just stifled in entering the hydroecium through heat exchange tube bank, neither can retrieve and do not play abluent effect again.

On the basis of not changing the water chamber structure before the condenser, through the not enough of analysis current structure, then adopt the scheme of addding the guide plate ingeniously, eliminate the glueballs that exist in the intake chamber and be the right angle or acute angle shape and detain the dead angle and trun into the obtuse angle that is greater than the right angle to make the rate of recovery of glueballs stabilize more than 95%. Therefore, the end difference of the condenser is stably kept below 4.5 ℃, and the condensing efficiency of the steam turbine is effectively guaranteed.

Preferably, the diaphragm plates 4 are symmetrically separated by vertical diaphragm plates 7, and the diaphragm plates 4 at two sides of the vertical diaphragm plates 7 are respectively composed of a first diaphragm plate 4a and a second diaphragm plate 4b which are arranged in parallel and staggered and an inclined plate 4c connecting the first diaphragm plate 4a and the second diaphragm plate 4 b. The free end of the first transverse plate 4a is connected to the inner wall of the middle lower part of the front water chamber 2, and the free end of the second transverse plate 4b is connected to the side surface of the middle upper part of the vertical partition plate 7. According to the structure, the transverse partition plate is provided with the trapezoidal structure, the water pressure impact of the water inlet is mainly considered, and the transverse partition plate is prevented from being stressed too much.

The other end of the guide plate 8 connected with the vertical clapboard 7 is connected with the contact part of the inclined plate 4c and the second transverse plate 4b and is tightly attached to the water inlet end of the nearest row of heat exchange tubes. This department guide plate shelters from the second diaphragm completely, under the prerequisite that does not increase the corner, turns into the obtuse angle with the right angle that originally exists, has avoided the delay of gluey ball effectively. Correspondingly, the guide plate 8 connected with the front water chamber 2 is tightly attached to the water inlet end of the nearest row of heat exchange tubes.

On the tube plate of the existing structure for connecting each heat exchange tube, due to the installation layout of the heat exchange tubes and the round shell of the condenser, a blank area appears, namely, an area without the heat exchange tubes at the corners. This is also one of the causes of retention of the glue beads. Therefore, the guide plates are tightly attached to the heat exchange tubes in the nearest row, the neutral areas at the original corners are shielded by the guide plates, and the problem of glue ball detention is further solved.

Further preferably, the cross section of the baffle 8 along the radial direction of the front water chamber 2 is linear or arc. As long as the guide plate is installed, the free space area at the corner can be shielded, and a right angle or an acute angle cannot be formed.

The above-mentioned embodiments are only for convenience of description, and are not intended to limit the present invention in any way, and those skilled in the art will understand that the technical features of the present invention can be modified or changed by other equivalent embodiments without departing from the scope of the present invention.

Claims

1. A small-sized steam turbine condenser easy to clean comprises a condensation chamber (1), and a front water chamber (2) and a rear water chamber (3) which are respectively positioned at two sides of the condensation chamber (1) and are in conduction connection, wherein a plurality of heat exchange tubes are distributed in the condensation chamber (1); the front water chamber (2) is divided into a water inlet chamber (5) positioned at the lower side and a water outlet chamber (6) positioned at the upper side by a transverse partition plate (4), a vertical partition plate (7) is vertically arranged at the center of the front water chamber (2), and the water inlet chamber (5) and the water outlet chamber (6) are divided into two symmetrical and independent chambers by the vertical partition plate (7); its characterized in that, cross slab (4) both ends are connected sealedly with preceding hydroecium (2) inner wall and perpendicular baffle (7) respectively, and the welding has guide plate (8) between cross slab (4) face both ends proximal end portion that is located intake chamber (5) one side and preceding hydroecium (2) inner wall and perpendicular baffle (7) that correspond, guide plate (8) and preceding hydroecium (2) inner wall, cross slab (4) and perpendicular baffle (7) form and are located intake chamber (5) contained angle all are greater than 90.

2. The small-sized steam turbine condenser easy to clean as claimed in claim 1, wherein the transverse partition plates (4) are symmetrically separated by vertical partition plates (7), and the transverse partition plates (4) positioned at two sides of the vertical partition plates (7) are respectively composed of a first transverse plate (4a) and a second transverse plate (4b) which are arranged in parallel and staggered and an inclined plate (4c) connecting the first transverse plate (4a) and the second transverse plate (4 b);

the free end of the first transverse plate (4a) is connected to the inner wall of the middle lower part of the front water chamber (2), and the free end of the second transverse plate (4b) is connected to the side surface of the middle upper part of the vertical partition plate (7);

the other end of the guide plate (8) connected with the vertical clapboard (7) is connected with the contact part of the inclined plate (4c) and the second transverse plate (4b) and clings to the water inlet end of the nearest row of heat exchange tubes.

3. The small-sized steam turbine condenser easy to clean according to claim 1 or 2, characterized in that the guide plate (8) connected with the front water chamber (2) is closely attached to the water inlet end of the heat exchange tube in the nearest row.

4. The compact steam turbine condenser easy to clean according to claim 1, wherein the cross section of the baffle plate (8) along the radial direction of the front water chamber (2) is linear or arc.