CN210293586U

CN210293586U - Steam turbine vacuum tightness test detection device

Info

Publication number: CN210293586U
Application number: CN201921249163.8U
Authority: CN
Inventors: 陆明
Original assignee: Nanjing Fufang Automation System Co Ltd
Current assignee: Nanjing Fufang Automation System Co Ltd
Priority date: 2019-08-03
Filing date: 2019-08-03
Publication date: 2020-04-10
Anticipated expiration: 2029-08-03

Abstract

The utility model belongs to the technical field of tightness test check out test set, especially, be a steam turbine vacuum tightness test detection device, including the vacuum chamber, the steam turbine main part has been placed on the top of vacuum chamber, the junction fixedly connected with sealing washer of vacuum chamber and steam turbine main part, the surface cover of steam turbine main part is equipped with hollow shell, the both sides fixedly connected with fixed block of steam turbine main part, the upper end fixedly connected with connecting rod of vacuum chamber, the connecting rod rotates through the pivot and is connected with the rotary rod, the lower extreme sliding connection of rotary rod has the cylinder, the one end of cylinder and the upper end fixed connection of vacuum chamber. The utility model discloses a set up the rotary rod, make the rotary rod produce rotatoryly under the drive of pneumatic cylinder, last tight extrudees the fixed block downwards to reach the fastening, prevented that steam turbine main part and vacuum chamber junction from taking place not hard up and gas leakage, improved experimental accurate nature.

Description

Steam turbine vacuum tightness test detection device

Technical Field

The utility model relates to a tightness test check out test set technical field specifically is a steam turbine vacuum tightness test detection device.

Background

The tightness of a steam turbine vacuum system is an important index related to the safe and economic operation of a steam turbine, and the index for evaluating the tightness of the steam turbine vacuum system at present is the vacuum reduction speed obtained by a tightness test of the vacuum system, namely, a qualitative result is given to the air leakage of the steam turbine vacuum system through the test.

However, the following problems exist:

1. the existing steam turbine vacuum tightness test detection device is often not fastened enough in connection between a vacuum box and a steam turbine, and is easy to loosen during detection, so that the detection value is not accurate enough, the repeatability is brought to work, and the time is wasted;

2. the existing steam turbine vacuum tightness test detection device is not provided with equipment for eliminating other factors during detection, and if air leakage occurs at a joint, the steam turbine vacuum tightness test detection device can also cause wrong judgment to be poor, so that unnecessary troubles are caused.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a steam turbine vacuum tightness test detection device has solved being connected between vacuum box and the steam turbine often not fastening enough and do not have the problem of the equipment of getting rid of other factors.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a steam turbine vacuum tightness test detection device, includes the vacuum chamber, the steam turbine main part has been placed on the top of vacuum chamber, the junction fixedly connected with sealing washer of vacuum chamber and steam turbine main part, the surface cover of steam turbine main part is equipped with hollow shell, the both sides fixedly connected with fixed block of steam turbine main part, the upper end fixedly connected with connecting rod of vacuum chamber, the connecting rod rotates through the pivot and is connected with the rotary rod, the lower extreme sliding connection of rotary rod has the cylinder, the one end of cylinder and the upper end fixed connection of vacuum chamber, one side fixedly connected with leakage-discharging equipment of vacuum chamber.

As a preferred technical scheme of the utility model, the leakage-removing equipment includes the helium tank, helium tank fixed connection is in one side of vacuum chamber, first gas outlet has been seted up to one side of helium tank, the second gas outlet has been seted up to the lower extreme of helium tank, the equal fixedly connected with air discharge fan in inside of first gas outlet and second gas outlet, the first breather pipe of one end fixedly connected with of first gas outlet, the first air check valve of surface fixedly connected with of first breather pipe, the one end fixedly connected with second breather pipe of second gas outlet, the surface fixedly connected with second air check valve of second breather pipe, the fixed cover of one side fixedly connected with of vacuum chamber, the one end of second breather pipe runs through the inside of placing at the fixed cover.

As a preferred technical scheme of the utility model, one side fixedly connected with vacuum pump of vacuum chamber, the end of bleeding of vacuum pump run through fixed cover and with vacuum chamber fixed connection.

As a preferred technical scheme of the utility model, the lower extreme fixedly connected with connecting leg of workstation, the lower extreme of connecting leg is located there is the spring holder.

As an optimal technical scheme of the utility model, one side fixedly connected with data transmission ware of vacuum chamber, vacuum chamber's opposite side fixedly connected with helium alarm and pressure sensor.

As an optimized technical scheme of the utility model, data transmission ware's transmission end and computer end electric connection, pressure sensor and data transmission ware electric connection.

(III) advantageous effects

Compared with the prior art, the utility model provides a steam turbine vacuum tightness test detection device possesses following beneficial effect:

1. this steam turbine vacuum tightness test detection device through setting up the rotary rod, makes the rotary rod produce the rotation under the drive of pneumatic cylinder, and last tightly extrudees the fixed block downwards to reach the fastening, prevented that steam turbine main part and vacuum chamber junction from taking place not hard up and gas leakage, improved experimental accurate nature.

2. This steam turbine vacuum tightness test detection device through setting up the equipment of leaking hunting, in the helium tank transmits the helium to hollow shell and fixed cover through first gas outlet and second gas outlet respectively, whether the junction exists gas leakage is known to the rethread helium alarm to better getting rid of it because of, make the experiment become more accurate.

Drawings

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

FIG. 2 is an enlarged view of the structure of FIG. 1A according to the present invention;

fig. 3 is a schematic view of a local structure of the leakage discharge device of the present invention.

In the figure: 1. a vacuum box; 2. a seal ring; 3. a turbine main body; 4. a hollow shell; 5. a fixed block; 6. a connecting rod; 7. rotating the rod; 8. a cylinder; 9. a leakage removal device; 901. a helium tank; 902. a first air outlet; 903. a second air outlet; 904. an exhaust fan; 905. a first vent pipe; 906. a first air stop valve; 907. a second vent pipe; 908. a second air stop valve; 10. a fixed cover; 11. a vacuum pump; 12. a work table; 13. a data transmitter; 14. a helium gas alarm; 15. a pressure sensor; 16. a connecting leg; 17. a spring seat.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-3, the present invention provides the following technical solutions: the utility model provides a steam turbine vacuum tightness test detection device, including vacuum box 1, steam turbine main part 3 has been placed on vacuum box 1's top, vacuum box 1 and steam turbine main part 3's junction fixedly connected with sealing washer 2, steam turbine main part 3's surface cover is equipped with hollow shell 4, steam turbine main part 3's both sides fixedly connected with fixed block 5, vacuum box 1's upper end fixedly connected with connecting rod 6, connecting rod 6 rotates through the pivot and is connected with rotary rod 7, rotary rod 7's lower extreme sliding connection has cylinder 8, cylinder 8's one end and vacuum box 1's upper end fixed connection, vacuum box 1's one side fixedly connected with leaks equipment 9.

In this embodiment, pass hollow shell 4 with steam turbine main part 3 and be connected with vacuum chamber 1, wherein the junction is equipped with sealing washer 2, opens cylinder 8 afterwards, makes cylinder 8 drive rotary rod 7 and is down rotatory to with the tight downward extrusion of fixed block 5, make steam turbine main part 3 inseparabler with vacuum chamber 1's connection, avoid becoming flexible and lead to gas leakage phenomenon.

Specifically, the leakage discharge device 9 includes a helium tank 901, the helium tank 901 is fixedly connected to one side of the vacuum box 1, a first air outlet 902 is formed in one side of the helium tank 901, a second air outlet 903 is formed in the lower end of the helium tank 901, an exhaust fan 904 is fixedly connected to the inside of the first air outlet 902 and the inside of the second air outlet 903, a first vent pipe 905 is fixedly connected to one end of the first air outlet 902, a first air stop valve 906 is fixedly connected to the outer surface of the first vent pipe 905, a second vent pipe 907 is fixedly connected to one end of the second air outlet 903, a second air stop valve 908 is fixedly connected to the outer surface of the second vent pipe 907, a fixed cover 10 is fixedly connected to one side of the vacuum box 1, and one end of the second vent pipe 907 penetrates through the inside of.

In this embodiment, the first air stop valve 906 is first opened, the second air stop valve 908 is closed, helium in the helium tank 901 is introduced into the hollow shell 4 through the first air pipe 905, after a period of time, whether the helium alarm 14 gives an alarm or not is checked, if the helium alarm is given, air leakage occurs at the joint of the turbine main body 3 and the vacuum box 1, if the helium leakage does not occur, the first air stop valve 906 is closed, the second air stop valve 908 is opened, helium is transmitted into the fixed cover 10 through the second air pipe 907, and the subsequent operations are as above.

Specifically, one side of the vacuum box 1 is fixedly connected with a vacuum pump 11, and the air exhaust end of the vacuum pump 11 penetrates through the fixing cover 10 and is fixedly connected with the vacuum box 1.

In this embodiment, the air exhaust end of the vacuum pump 11 penetrates through the fixing cover 10 and is fixedly connected with the vacuum box 1, so that helium can better enter the vacuum box 1 through the air leakage port.

Specifically, the lower end of the working table 12 is fixedly connected with a connecting leg 16, and a spring seat 17 is located at the lower end of the connecting leg 16.

In this embodiment, the connecting legs 16 are matched with the spring seats 17, so that the whole detection device can be better damped by the workbench 12, and the looseness of the joint caused by vibration is prevented.

Specifically, one side of the vacuum box 1 is fixedly connected with a data transmitter 13, and the other side of the vacuum box 1 is fixedly connected with a helium alarm 14 and a pressure sensor 15.

In this embodiment, the helium alarm 14 can effectively detect whether the helium gas enters the vacuum chamber 1 through the air leakage at the joint, and the pressure sensor 15 can better transmit the data to the data transmitter 13 and finally to the computer.

Specifically, the transmission end of the data transmitter 13 is electrically connected to the computer end, and the pressure sensor 15 is electrically connected to the data transmitter 13.

In this embodiment, the computer side can better receive the receipt and analyze the data.

The utility model discloses a theory of operation and use flow: first pass hollow shell 4 with steam turbine main part 3 and be connected with vacuum box 1, wherein the junction is equipped with sealing washer 2, open cylinder 8 afterwards, make cylinder 8 drive rotary rod 7 rotation downwards, thereby with the downward extrusion that fixed block 5 is tight, make steam turbine main part 3 more inseparable with vacuum box 1's connection, avoid becoming flexible and lead to gas leakage phenomenon, then open vacuum pump 11, make vacuum pump 11 take out the air in vacuum box 1, after vacuum box 1 reaches vacuum state, can transmit the data of vacuum state change in vacuum box 1 in ten minutes to the computer end through data transmission ware 13, if it is not enough to measure the leakproofness during this period, we can get rid of the outer reason in advance, the step is as follows: firstly, the first air stop valve 906 is in an open state, the second air stop valve 908 is closed, helium in the helium tank 901 is led into the hollow shell 4 through the first air pipe 905, whether the helium alarm 14 gives an alarm or not is checked after a period of time, if the helium alarm gives an alarm, air leakage is generated at the joint of the steam turbine main body 3 and the vacuum box 1, if the helium leakage does not give an alarm, the first air stop valve 906 is closed, the second air stop valve 908 is opened, the helium is transmitted into the fixed cover 10 through the second air pipe 907, and the subsequent work is the same as the above.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a steam turbine vacuum tightness test detection device, includes vacuum box (1), steam turbine main part (3) have been placed on the top of vacuum box (1), the junction fixedly connected with sealing washer (2) of vacuum box (1) and steam turbine main part (3), the surface cover of steam turbine main part (3) is equipped with hollow shell (4), its characterized in that: the both sides fixedly connected with fixed block (5) of steam turbine main part (3), the upper end fixedly connected with connecting rod (6) of vacuum box (1), connecting rod (6) are rotated through the pivot and are connected with rotary rod (7), the lower extreme sliding connection of rotary rod (7) has cylinder (8), the one end of cylinder (8) and the upper end fixed connection of vacuum box (1), one side fixedly connected with leakage-discharging equipment (9) of vacuum box (1).

2. The steam turbine vacuum tightness test detection device according to claim 1, characterized in that: the leakage-discharging device (9) comprises a helium tank (901), the helium tank (901) is fixedly connected with one side of the vacuum box (1), a first gas outlet (902) is arranged on one side of the helium tank (901), a second gas outlet (903) is arranged at the lower end of the helium tank (901), the insides of the first air outlet (902) and the second air outlet (903) are fixedly connected with an exhaust fan (904), one end of the first air outlet (902) is fixedly connected with a first vent pipe (905), the outer surface of the first vent pipe (905) is fixedly connected with a first air stop valve (906), one end of the second air outlet (903) is fixedly connected with a second vent pipe (907), the outer surface of the second vent pipe (907) is fixedly connected with a second air stop valve (908), one side of the vacuum box (1) is fixedly connected with a fixed cover (10), and one end of the second vent pipe (907) penetrates through the fixed cover (10).

3. The steam turbine vacuum tightness test detection device according to claim 1, characterized in that: one side fixedly connected with vacuum pump (11) of vacuum chamber (1), the end of bleeding of vacuum pump (11) runs through fixed cover (10) and with vacuum chamber (1) fixed connection.

4. The steam turbine vacuum tightness test detection device according to claim 1, characterized in that: the vacuum box is characterized in that a workbench (12) is fixedly connected to the lower ends of the vacuum box (1) and the vacuum pump (11), a connecting leg (16) is fixedly connected to the lower end of the workbench (12), and a spring seat (17) is located at the lower end of the connecting leg (16).

5. The steam turbine vacuum tightness test detection device according to claim 1, characterized in that: one side fixedly connected with data transmission ware (13) of vacuum chamber (1), the opposite side fixedly connected with helium alarm (14) and pressure sensor (15) of vacuum chamber (1).

6. The steam turbine vacuum tightness test detection device according to claim 5, characterized in that: the transmission end of the data transmitter (13) is electrically connected with the computer end, and the pressure sensor (15) is electrically connected with the data transmitter (13).