CN209976584U

CN209976584U - Steam turbine shaft seal steam supply adjusting device

Info

Publication number: CN209976584U
Application number: CN201920909628.1U
Authority: CN
Inventors: 苏然
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-18
Filing date: 2019-06-18
Publication date: 2020-01-21
Anticipated expiration: 2029-06-18

Abstract

The utility model discloses a steam turbine bearing seal supplies vapour adjusting device, including the low pressure jar, the female pipe of bearing seal, the water spray desuperheater, the water spray governing valve and the low pressure jar shaft seal of setting in the low pressure jar both sides, two low pressure jar bearing seals are connected with the female pipe of bearing seal through the water spray desuperheater, install the water spray governing valve on the water supply pipeline of water spray desuperheater, install the cross on the pipeline between water spray desuperheater and two low pressure jar bearing seals, the first end of cross communicates with the water spray desuperheater, the second end of cross communicates with one of them low pressure jar shaft seal, the third end of cross communicates with another low pressure jar shaft seal, the fourth end of cross communicates there is voltage regulator; the utility model discloses a voltage regulator's setting, this voltage regulator can realize the steady voltage to the steam by the output of water spray desuperheater, so, can avoid carrying the steam pressure of giving the low pressure cylinder bearing seal to appear undulant phenomenon to can ensure the normal work of low pressure cylinder bearing seal.

Description

Steam turbine shaft seal steam supply adjusting device

Technical Field

The utility model relates to a supply vapour adjusting device technical field, concretely relates to steam turbine bearing seal supplies vapour adjusting device.

Background

The steam turbine is a device for working through steam, and when the steam turbine works, when steam needs to be supplied to the low-pressure cylinder shaft seals on two sides of the low-pressure cylinder, the steam needs to be cooled firstly, namely, a water spray desuperheater is installed on a pipeline between a shaft seal main pipe and the low-pressure cylinder shaft seals, and then the water spray quantity of the water spray desuperheater is controlled through a water spray adjusting valve, so that the steam is cooled; however, in the actual use process, after the steam is cooled by the water spray desuperheater, the pressure value of the steam output by the water spray desuperheater is easy to fluctuate, so that the normal operation of the low-pressure cylinder shaft seal is affected.

SUMMERY OF THE UTILITY MODEL

To prior art's not enough, the utility model provides a steam turbine bearing seal supplies vapour adjusting device, its setting through voltage regulator device, this voltage regulator device can realize the steady voltage to the steam by the output of water spray desuperheater, so, can avoid carrying the steam pressure of giving the low pressure jar bearing seal and appear undulant phenomenon to can ensure the normal work of low pressure jar bearing seal.

The utility model discloses a steam turbine bearing seal supplies vapour adjusting device, including the low pressure jar, female pipe of bearing seal, the water spray desuperheater, water spray regulating valve and the low pressure jar shaft seal of setting in the low pressure jar both sides, two low pressure jar bearing seals are through the female union coupling of water spray desuperheater and bearing seal, install the water spray regulating valve on the delivery pipeline of water spray desuperheater, install the cross on the pipeline between water spray desuperheater and two low pressure jar bearing seals, the first end and the water spray desuperheater intercommunication of cross, the second end of cross communicates rather than one of the low pressure jar shaft seal, the third end and another low pressure jar shaft seal intercommunication of cross, the fourth end intercommunication of cross has voltage regulator.

The utility model discloses a steam turbine bearing seal steam supply adjusting device, wherein, pressure stabilizer includes the upper end opening and the inside surge tank that is provided with the cavity, and the upper end sealed ground of surge tank is fixed with the cover, installs the pipeline that is used for with surge tank inside cavity intercommunication on the cover, and the pipeline is towards the outer wall of the one end of cover and cover welded seal, and the pipeline is kept away from the one end of cover and the fourth end of cross and is communicated; the inside of surge tank is provided with the piston, inlays on the periphery wall of piston and is equipped with the sealing washer, and the sealing washer pastes with the inner peripheral wall of surge tank, inlays between the interior bottom of piston and surge tank and is equipped with the spring.

The utility model discloses a steam turbine bearing seal supplies vapour adjusting device, wherein, is provided with the boss of inserting in the surge tank on the lower terminal surface of cover, and the cover is equipped with the rubber circle on the periphery wall of boss, and the rubber circle pastes with the inner wall of surge tank mutually.

The utility model discloses a steam turbine bearing seal supplies vapour adjusting device, wherein, is provided with first annular chimb on the periphery wall of cover lower extreme, is provided with second annular chimb on the periphery wall of surge tank upper end, and the cover is fixed through wearing to establish a plurality of bolt assembly in first annular chimb and second annular chimb with the surge tank, and a plurality of bolt assembly is circumference evenly distributed.

The utility model discloses a voltage regulator's setting, this voltage regulator can realize the steady voltage to the steam by the output of water spray desuperheater, so, can avoid carrying the steam pressure of giving the low pressure cylinder bearing seal to appear undulant phenomenon to can ensure the normal work of low pressure cylinder bearing seal.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

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

FIG. 2 is a schematic cross-sectional view of a voltage stabilizer;

fig. 3 is an enlarged schematic view of a portion a in fig. 2.

Detailed Description

In the following description, numerous implementation details are set forth in order to provide a more thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model discloses a steam turbine bearing seal supplies vapour adjusting device, including low pressure cylinder 1, female pipe 2 of bearing seal, water spray desuperheater 3, water spray regulating valve 4 and the low pressure cylinder shaft seal 5 of setting in 1 both sides of low pressure cylinder, two low pressure cylinder bearing seals 5 are connected with female pipe 2 of bearing seal through water spray desuperheater 3, install water spray regulating valve 4 on the water supply pipeline of water spray desuperheater 3, install cross 6 on the pipeline between water spray desuperheater 3 and two low pressure cylinder bearing seals 5, the first end of cross 6 communicates with water spray desuperheater 3, the second end of cross 6 communicates with one of them low pressure cylinder bearing seal 5, the third end of cross 6 communicates with another low pressure cylinder bearing seal 5, the fourth end of cross 6 communicates there is voltage regulator 7; the utility model discloses a voltage regulator's setting, this voltage regulator can realize the steady voltage to the steam by the output of water spray desuperheater, so, can avoid carrying the steam pressure of giving the low pressure cylinder bearing seal to appear undulant phenomenon to can ensure the normal work of low pressure cylinder bearing seal.

The pressure stabilizing device 7 comprises a pressure stabilizing tank 71 with an opening at the upper end and a cavity arranged inside, a tank cover 72 is hermetically fixed at the upper end of the pressure stabilizing tank 71, a pipeline 73 used for communicating with the cavity inside the pressure stabilizing tank 71 is installed on the tank cover 72, the outer wall of one end, facing the tank cover 72, of the pipeline 73 is welded and sealed with the tank cover 72, and one end, away from the tank cover 72, of the pipeline 73 is communicated with the fourth end of the cross 6; a piston 74 is arranged in the pressure stabilizing tank 71, a sealing ring 75 is embedded on the outer peripheral wall of the piston 74, the sealing ring 75 is attached to the inner peripheral wall of the pressure stabilizing tank 71, and a spring 76 is embedded between the piston 74 and the inner bottom of the pressure stabilizing tank 71; by adopting the structure, when the steam pressure output by the water spray desuperheater is increased, the piston in the pressure stabilizing tank can compress the spring and move downwards, the pressure stabilizing device can absorb the steam pressure output by the water spray desuperheater, when the steam pressure output by the water spray desuperheater is reduced, the piston in the pressure stabilizing tank can move upwards under the action of the spring, and the pressure stabilizing tank can pressurize the steam in the pipeline; in the process, the pressure stabilizing tank can stabilize the steam pressure output by the water spraying desuperheater, so that the normal work of the shaft seals of the low-pressure cylinder at the two sides of the low-pressure cylinder can be ensured.

A boss 721 inserted into the surge tank 71 is arranged on the lower end face of the tank cover 72, a rubber ring 77 is sleeved on the outer peripheral wall of the boss 721, and the rubber ring 77 is attached to the inner wall of the surge tank 71; by adopting the structure, the tank cover can be reliably connected to the pressure stabilizing tank in a sealing way.

A first annular convex edge 722 is arranged on the outer peripheral wall at the lower end of the tank cover 72, a second annular convex edge 711 is arranged on the outer peripheral wall at the upper end of the pressure stabilizing tank 71, the tank cover 72 and the pressure stabilizing tank 71 are fixed through a plurality of bolt assemblies 78 arranged in the first annular convex edge 722 and the second annular convex edge 711 in a penetrating manner, and the bolt assemblies 78 are uniformly distributed in the circumferential direction; by adopting such a structure, the tank cover can be reliably fixed to the surge tank.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides a steam turbine bearing seal supplies vapour adjusting device, includes low pressure cylinder (1), female pipe of bearing seal (2), water spray desuperheater (3), water spray regulating valve (4) and sets up low pressure cylinder bearing seal (5) in low pressure cylinder (1) both sides, and two low pressure cylinder bearing seals (5) are connected with female pipe of bearing seal (2) through water spray desuperheater (3), install water spray regulating valve (4), its characterized in that on the supply pipeline of water spray desuperheater (3): the pipeline between the water spray desuperheater (3) and the two low-pressure cylinder shaft seals (5) is provided with a cross joint (6), the first end of the cross joint (6) is communicated with the water spray desuperheater (3), the second end of the cross joint (6) is communicated with one low-pressure cylinder shaft seal (5), the third end of the cross joint (6) is communicated with the other low-pressure cylinder shaft seal (5), and the fourth end of the cross joint (6) is communicated with a pressure stabilizing device (7).

2. The steam turbine shaft seal steam supply adjusting device according to claim 1, characterized in that the pressure stabilizing device (7) comprises a pressure stabilizing tank (71) with an opening at the upper end and a cavity arranged inside, a tank cover (72) is hermetically fixed at the upper end of the pressure stabilizing tank (71), a pipeline (73) used for communicating with the cavity inside the pressure stabilizing tank (71) is installed on the tank cover (72), the outer wall of the pipeline (73) facing one end of the tank cover (72) is welded and sealed with the tank cover (72), and one end of the pipeline (73) far away from the tank cover (72) is communicated with the fourth end of the cross joint (6); the inside of surge tank (71) is provided with piston (74), inlay on the periphery wall of piston (74) and be equipped with sealing washer (75), sealing washer (75) and the interior wall of surge tank (71) paste, inlay between the interior bottom of piston (74) and surge tank (71) and be equipped with spring (76).

3. The steam turbine shaft seal steam supply adjusting device according to claim 2, characterized in that a boss (721) inserted into the surge tank (71) is arranged on the lower end face of the cover (72), a rubber ring (77) is sleeved on the outer peripheral wall of the boss (721), and the rubber ring (77) is attached to the inner wall of the surge tank (71).

4. The steam turbine shaft seal steam supply adjusting device according to claim 2, characterized in that a first annular convex edge (722) is arranged on the outer peripheral wall of the lower end of the tank cover (72), a second annular convex edge (711) is arranged on the outer peripheral wall of the upper end of the surge tank (71), the tank cover (72) and the surge tank (71) are fixed through a plurality of bolt assemblies (78) arranged in the first annular convex edge (722) and the second annular convex edge (711) in a penetrating manner, and the plurality of bolt assemblies (78) are uniformly distributed in the circumferential direction.