CN209354204U

CN209354204U - Steam Turbine's Main Vaper Valve oil motor movement test device

Info

Publication number: CN209354204U
Application number: CN201822271560.7U
Authority: CN
Inventors: 王曦
Original assignee: Individual
Current assignee: Ma Xiaomei
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2019-09-06
Anticipated expiration: 2028-12-29

Abstract

The utility model discloses a kind of Steam Turbine's Main Vaper Valve oil motor movement test devices, belong to steam turbine technology field, the oil motor includes shell and the piston that sliding is disposed in the housing, a chamber is formed between the piston and the shell, b chamber is additionally provided on the shell, the movement test device includes the bushing being installed on the shell, the bushing is equipped with radial passage, the shell is equipped with the channel c for being connected to the radial passage and a chamber, slide valve is slidably fitted in the bushing, one end of the slide valve is fixedly installed with button, the other end is equipped with limit element, axially extending cavity is equipped with close to one end of the limit element on the slide valve, the cavity corresponds to the b chamber setting, the radial hole for being connected to the cavity is additionally provided on the slide valve, between the button and the bushing Equipped with elastic element.The utility model is not only simple in structure, reliable performance, easy to operate, and low cost.

Description

Steam Turbine's Main Vaper Valve oil motor movement test device

Technical field

The utility model belongs to steam turbine technology field more particularly to a kind of Steam Turbine's Main Vaper Valve oil motor movement test dress It sets.

Background technique

Steam turbine is the rotary power machinery that the energy of steam is converted to mechanical work, and the steam from boiler enters vapour After turbine, successively the nozzle and movable vane Jing Guo a series of loop configurations, convert turbine rotor rotation for the thermal energy of steam Mechanical energy.

Stop valve is the valve for making main steam enter steam turbine and energy quick closedown, the guarantor as steam turbine operation when critical Mechanism is protected, its tightness and flexibility directly affect the safe operation of steam turbine generator.Steam turbine generally requires year to run Time 8000 hours or more, stop valve was in normally open when Steam Turbine is run, and the function of stop valve requires stop valve again Unit need to close in time in 0.5-0.7 seconds when tripping grinder, cutting enter steam turbine steam passage be therefore Guarantee that the case where bite does not occur in the oil motor of stop valve, having on stop valve oil motor can activity in Steam Turbine operation The device of stop valve oil motor, i.e. movement test device.

Currently, the movement test apparatus structure of existing Steam Turbine's Main Vaper Valve oil motor is complicated, and it is at high cost, to actual use It makes troubles.

Utility model content

The technical problem to be solved by the utility model is to provide a kind of Steam Turbine's Main Vaper Valve oil motor movement test dresses It sets, is not only simple in structure, reliable performance is easy to operate, and low cost.

In order to solve the above technical problems, the technical solution of the utility model is: Steam Turbine's Main Vaper Valve oil motor movement test Device, the oil motor include shell and the piston that sliding is disposed in the housing, and form a between the piston and the shell Chamber is additionally provided with b chamber on the shell, and the movement test device includes the bushing being installed on the shell, the lining It puts on and is equipped with radial passage, the shell is equipped with the channel c for being connected to the radial passage and a chamber, in the bushing It is slidably fitted with slide valve, one end of the slide valve is fixedly installed with button, and the other end is equipped with limit element, close on the slide valve One end of the limit element is equipped with axially extending cavity, and the cavity corresponds to the b chamber setting, also sets on the slide valve There is the radial hole for being connected to the cavity, elastic element is equipped between the button and the bushing；

After pressing the button, the radial hole can be connected to the radial passage and the channel c, to make described A chamber and the b chamber.

As an improvement the elastic element includes the spring being sleeved on the outside of the slide valve, one end of the spring It is resisted against on the button, the other end is resisted against on the bushing.

As a further improvement, the bushing is equipped with stepped hole, the stepped hole include interconnected macropore and Aperture, the slide valve are matched with the aperture, and one end of the spring is resisted against the bottom of the macropore；It is set on the button There is annular groove, the other end of the spring is arranged in the annular groove.

As a further improvement, the limit element includes the first radial flange on the slide valve, works as release After the button, under the action of the spring, first radial flange can be resisted against on the bushing.

As an improvement the bush threads are connected on the shell, the bushing is equipped with the second radial flange, The shape of second radial flange is hexagon, and second radial flange is against on the housing.

As an improvement the slide valve and the button are threaded togather.

After above-mentioned technical proposal, the beneficial effects of the utility model are: since Steam Turbine's Main Vaper Valve oil motor is living Dynamic test device devises bushing, slide valve, button, elastic element and limit element, and the oil motor includes shell, piston and a Chamber is additionally provided with b chamber and the channel c on the shell, thus Steam Turbine is at runtime, and pressure oil, which enters in a chamber, to be pushed Piston motion opens stop valve, and slide valve blocks the channel c and radial passage, when needs activity stop valve oil motor, presses Button, slide valve can move down together with button, and radial hole is connected to radial passage and the channel c, thus make a chamber and b chamber, The indoor oil of oil motor a chamber can enter in the cavity in slide valve through the channel c, radial passage and radial hole in this way, subsequently into b chamber Room, at this point, oil pressure in a chamber can be reduced because of draining, piston reverses direction movement, up to the channel c is blocked, no longer draining； After the completion of movement test, release button is resetted by elastic element, and subsequent pressure oil goes successively to a chamber, pushes piston Movement, opens stop valve.Steam Turbine's Main Vaper Valve oil motor movement test device provided by the utility model, not only structure letter Single, reliable performance is easy to operate, and low cost.

Since the bush threads are connected on the shell, the bushing be equipped with the second radial flange, described second The shape of radial flange is hexagon, and second radial flange can be adopted against on the housing, thus when installing bushing It is directly tightened with spanner, can effectively reduce the set-up time, and be not easy to leave installation trace.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of Steam Turbine's Main Vaper Valve oil motor；

Fig. 2 is the structural schematic diagram of Steam Turbine's Main Vaper Valve oil motor movement test device provided by the utility model；

Fig. 3 be in Fig. 2 A to structural schematic diagram；

Fig. 4 is partial enlargement diagram at B in Fig. 2；

In figure: 1- shell, 2- piston, 3-a chamber, 4-b chamber, 5- disk spring, 6- bushing, the radial passage 61-, 62- Second radial flange, the channel 7-c, 8- slide valve, 81- cavity, 82- radial hole, the first radial flange of 83-, 9- button, 91- annular Groove, 10- spring.

Specific embodiment

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain The utility model is not used to limit the utility model.

As shown in Figure 1, Figure 2 and Fig. 4 is jointly shown, a kind of Steam Turbine's Main Vaper Valve oil motor movement test device, the oil motor packet The piston 2 of shell 1 and sliding in shell 1 is included, a chamber 3 is formed between piston 2 and shell 1, is additionally provided with b chamber on shell 1 4.As shown in Figure 1, being equipped with disk spring 5 in another chamber formed between piston 2 and shell 1.

The movement test device includes the bushing 6 being installed on shell 1, and bushing 6 is equipped with radial passage 61, on shell 1 Equipped with the channel c 7 for being connected to radial passage 61 and a chamber 3, slide valve 8 is slidably fitted in bushing 6, one end of slide valve 8 is fixedly mounted There is button 9, in the present embodiment, slide valve 8 and button 9 are threaded togather, and 8 other end of slide valve is equipped with limit element, slide valve 8 Upper one end close to limit element is equipped with axially extending cavity 81, and the corresponding b chamber 4 of cavity 81 is arranged, the company of being additionally provided on slide valve 8 The radial hole 82 of logical cavity 81, is equipped with elastic element between button 9 and bushing 6；Behind push button 9, radial hole 82 can be with diameter It is connected to channel 61 with the channel c 7, so that a chamber 3 be made to be connected to b chamber 4.

In the present embodiment, above-mentioned elastic element includes the spring 10 for being sleeved on the outside of slide valve 8, one end of spring 10 against On button 9, the other end is resisted against on bushing 6.Certainly, elastic element can also select disk spring or those skilled in the art The other way that member can be realized, details are not described herein.

Preferably, bushing 6 is equipped with stepped hole (not marking in figure), and stepped hole includes interconnected macropore and aperture, Slide valve is matched with aperture, and one end of spring 10 is resisted against the bottom of macropore；Button 9 is equipped with annular groove 91, spring 10 The other end is arranged in annular groove 91.

In the present embodiment, above-mentioned limit element includes the first radial flange 83 on slide valve 8, when release button 9 Afterwards, under the action of spring 10, the first radial flange 83 can be resisted against on bushing 6.Certainly, limit element can also be selected in cunning The other way etc. that the end setting nut of valve 8 or those skilled in the art can be realized, details are not described herein.

In the present embodiment, bushing 6 is threadedly connected on shell 1, and bushing 6 is equipped with the second radial flange 62, such as Fig. 3 institute Show, the shape of the second radial flange 62 is hexagon, and the second radial flange 62 is resisted against on shell 1.In this way in installation bushing 6 When, spanner can be used and directly tighten, can effectively reduce the set-up time, and be not easy to leave installation trace.

Its working principles are as follows:

At runtime, pressure oil enters in a chamber 3 pushes piston 2 to move to Steam Turbine, and disk spring 5 is jacked up, makes to lead Steam valve is opened, and slide valve 8 blocks the channel c 7 and radial passage 61, sliding by lower button 9 when needs activity stop valve oil motor Valve 8 can move down together with button 9, and radial hole 82 is connected to radial passage 61 and the channel c 7, so that a chamber 3 and b chamber 4 be made to connect Logical, the oil in such oil motor a chamber 3 can enter the cavity 81 in slide valve 8 through the channel c 7, radial passage 61 and radial hole 82 In, subsequently into b chamber 4, at this point, the oil pressure in a chamber 3 can be reduced because of draining, it is living under the action of disk spring 5 2 counter motions are filled in, until the channel c 7 is blocked, no longer draining；After the completion of movement test, release button 9 is answered by spring 10 Position, subsequent pressure oil go successively to a chamber 3, push piston 2 to move, open stop valve.

Steam Turbine's Main Vaper Valve oil motor movement test device provided by the utility model, is not only simple in structure, reliable performance, It is easy to operate, and low cost.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims

1. Steam Turbine's Main Vaper Valve oil motor movement test device, the oil motor includes that shell and sliding are disposed in the housing Piston forms a chamber, which is characterized in that b chamber, the work are additionally provided on the shell between the piston and the shell Dynamic test device includes the bushing being installed on the shell, and the bushing is equipped with radial passage, and the shell, which is equipped with, to be connected Lead to the channel c of the radial passage and a chamber, slide valve is slidably fitted in the bushing, one end of the slide valve is fixed Button is installed, the other end is equipped with limit element, is equipped on the slide valve close to one end of the limit element axially extending Cavity, the cavity correspond to the b chamber setting, are additionally provided with the radial hole for being connected to the cavity, the button on the slide valve Elastic element is equipped between the bushing；

After pressing the button, the radial hole can be connected to the radial passage and the channel c, to make a chamber Room and the b chamber.

2. Steam Turbine's Main Vaper Valve oil motor movement test device according to claim 1, which is characterized in that the elasticity member Part includes the spring being sleeved on the outside of the slide valve, and one end of the spring is resisted against on the button, and the other end is resisted against institute It states on bushing.

3. Steam Turbine's Main Vaper Valve oil motor movement test device according to claim 2, which is characterized in that on the bushing Equipped with stepped hole, the stepped hole includes interconnected macropore and aperture, and the slide valve is matched with the aperture, the bullet One end of spring is resisted against the bottom of the macropore；The button is equipped with annular groove, and the other end of the spring is arranged in institute It states in annular groove.

4. Steam Turbine's Main Vaper Valve oil motor movement test device according to claim 2, which is characterized in that the limit member Part includes the first radial flange on the slide valve, after unclamping the button, under the action of the spring, and described the One radial flange can be resisted against on the bushing.

5. Steam Turbine's Main Vaper Valve oil motor movement test device according to claim 1, which is characterized in that the bushing spiral shell Line is connected on the shell, and the bushing is equipped with the second radial flange, and the shape of second radial flange is hexagon, Second radial flange is against on the housing.

6. Steam Turbine's Main Vaper Valve oil motor movement test device according to claim 1, which is characterized in that the slide valve and The button is threaded togather.