CN213655814U

CN213655814U - Safe and reliable's gaseous auto-change over device

Info

Publication number: CN213655814U
Application number: CN202022438769.5U
Authority: CN
Inventors: 茅爱军; 王涛
Original assignee: Jiangsu Shagang Group Co Ltd; Zhangjiagang Hongchang Steel Plate Co Ltd
Current assignee: Jiangsu Shagang Group Co Ltd; Zhangjiagang Hongchang Steel Plate Co Ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-07-09
Anticipated expiration: 2030-10-27

Abstract

The utility model discloses a safe and reliable's gaseous auto-change over device relates to gaseous switching technical field, the utility model discloses a main valve body, right valve body, left valve body and inferior valve body, the top of the main valve body is run through and is had first air inlet and second air inlet, and one side of right valve body and one side of inferior valve body are connected with first cavity, and the inside of first cavity is provided with first case, and one side of left valve body and the opposite side of inferior valve body are connected with the second cavity. The utility model discloses a set up gaseous detector, the gas outlet, the solenoid valve, the gas transmission mouth, the atmospheric pressure detector, electric putter and valve gap, when needs air pressure to carry to the cavity is inside, through the atmospheric pressure of atmospheric pressure detector detection air, thereby judge its function that can push the case, if the detected value is unqualified, promote the valve core function through electric putter, thereby it is little to have avoided air pressure, can't make the case move, and can't in time to gas outlet and close, lead to the spacing signal trouble of case.

Description

Safe and reliable's gaseous auto-change over device

Technical Field

The utility model relates to a gaseous technical field that switches specifically is a safe and reliable's gaseous auto-change over device.

Background

The switching valve (forced valve) is a pneumatic switch valve installed at the hot end of the switching heat exchanger (or cold accumulator), the valve plate is opened and closed by utilizing the principle of a connecting rod structure, and the switch of the switching valve is controlled by compressing air through a signal from an electromagnetic valve. According to different functions in the process, an air and waste nitrogen switching valve, a pure nitrogen suppression valve, a waste nitrogen three-way valve and the like are provided. The structure type is divided into a vertical type and a horizontal type. The vertical switching valve can be divided into an air-open type and an air-closed type. The air-open type means that when the compressed air is cut off by signal, the valve clack can be automatically opened by means of self-gravity; otherwise, the gas-closed type is adopted. The selection of the gas opening and the gas closing is determined by the safety of the device. The nitrogen switching valve is opened by air, and the air switching valve is closed by air.

The existing gas switching device has low gas tightness, easily causes gas to leak in the replacement process, and causes work to fail, which is not convenient for the continuation of follow-up work, thereby reducing the work efficiency of workers and causing enterprises to need to overhaul equipment, thereby increasing the production cost of enterprises, besides, in the gas replacement process, the pressure of air causes the valve core to move, and when the air pressure is small, the valve core can not move, and the gas outlet can not be closed in time, thereby causing the fault of the limit signal of the valve core, thereby causing the error of instructions, and leading to the mixing of two gases, thus not only increasing the maintenance operation difficulty of the workers, but also increasing the labor intensity of the workers, thereby being not convenient for putting into practical use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the problems that the gas switching device is low in gas tightness and cannot provide accurate limiting signals for a valve core, the gas switching device is safe and reliable.

In order to achieve the above object, the utility model provides a following technical scheme: a safe and reliable gas switching device comprises a main valve body, a right valve body, a left valve body and a secondary valve body, wherein a first gas inlet and a second gas inlet penetrate through the top of the main valve body, a first cavity is connected with one side of the right valve body and one side of the secondary valve body, a first valve core is arranged in the first cavity, a second cavity is connected with one side of the left valve body and the other side of the secondary valve body, a second valve core is arranged in the second cavity, gas transmission ports penetrate through the bottoms of the first cavity and the second cavity, gas pressure detectors are arranged on one sides of the two gas transmission ports, first sealing rings are arranged on the tops of the first valve core and the second valve core, a gas detector is arranged on one side of the top of the secondary valve body, second sealing rings are arranged above the two sides of the secondary valve body, and a gas outlet penetrates through the middle of the bottom of the secondary valve body, the solenoid valve is installed to one side of gas outlet, the bottom of left valve body, right valve body and time valve body all is provided with the valve gap, electric putter is installed to the bottom of valve gap, electric putter's both sides all are provided with the third sealing washer.

Preferably, electric putter is provided with a plurality ofly, and is a plurality of electric putter's one end is run through to the top of valve gap, and is a plurality of electric putter equidistance distributes, the valve gap is fixed with left valve body, right valve body and inferior valve body respectively through the mode that powerful gluing bonded.

Preferably, the diameters of the first valve core and the second valve core are larger than the diameters of the first air inlet and the second air inlet, two sides of the first valve core and two sides of the second valve core are attached to the inner walls of the first cavity and the second cavity, and the first valve core and the second valve core are in an inverted T shape.

Preferably, the two second sealing rings are symmetrically arranged along the central line of the longitudinal axis of the secondary valve body, and the second sealing rings are made of rubber materials.

Preferably, the first air inlet and the second air inlet are uniform in shape, and the first air inlet and the second air inlet are not communicated with each other.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model is provided with a main valve body, a first air inlet, a second air inlet, a right valve body, a left valve body, a secondary valve body, a first valve core, a first sealing ring, a second sealing ring, an air outlet, an air transmission port, a third sealing ring, a valve cover, a first cavity, a second valve core and a second cavity, when gas replacement is needed, air is conveyed to the first cavity from the air transmission port at one side by air pressure, so that the first valve core vertically and horizontally moves, the first air inlet is blocked by the first sealing ring, meanwhile, the second air can be discharged from the second air inlet through the air outlet of the secondary valve body, on the contrary, when the air is conveyed to the second cavity by air pressure, so that the second valve core vertically and horizontally moves, the second air inlet is blocked by the first sealing ring, therefore, the first air can be discharged from the air outlet, when the air inlet can be blocked by the arranged first sealing ring, air leakage is prevented, and then discharged air is prevented from being discharged through the first cavity or the second cavity by the second sealing ring and the third sealing ring to cause air mixing, so that the air tightness of the whole valve body is improved, and air leakage in the replacement process is prevented;

2. the utility model is provided with a gas detector, a gas outlet, a solenoid valve, a gas transmission port, a gas pressure detector, an electric push rod and a valve cover, when air pressure is needed to be conveyed into the cavity, the air pressure of the air is detected by the air pressure detector, thereby judging whether the valve core can be pushed to operate or not, if the detection value is unqualified, the valve core is pushed to operate by the electric push rod, thereby avoiding the fault of the valve core limit signal caused by the failure of the valve core limit signal due to the failure of the valve core to timely close and open the gas outlet caused by the failure of the valve core to move due to the small air pressure, meanwhile, a gas detector is used for detecting whether the two gases are mixed or not, if the two gases are not qualified, the gas outlet is closed through an electromagnetic valve to remind a worker to carry out maintenance, therefore, the gas discharge is strictly controlled, the actual operation quality of subsequent work is improved, the accuracy is high, and the method is convenient to put into actual production and use.

Drawings

Fig. 1 is a schematic structural view of a first air inlet of the present invention in an open/close state;

FIG. 2 is a schematic structural view of a second air inlet of the present invention in an open/close state;

FIG. 3 is an enlarged schematic view of the structure at the position A of the present invention;

fig. 4 is an enlarged schematic view of the position B of the present invention.

In the figure: 1. a main valve body; 2. a first air inlet; 3. a second air inlet; 4. a right valve body; 5. a left valve body; 6. a sub-valve body; 7. a first valve spool; 8. a first seal ring; 9. a second seal ring; 10. a gas detector; 11. an air outlet; 12. an electromagnetic valve; 13. a gas transmission port; 14. an air pressure detector; 15. an electric push rod; 16. a third seal ring; 17. a valve cover; 18. a first cavity; 19. a second valve core; 20. a second cavity.

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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "disposed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The following describes an embodiment of the present invention according to its overall structure.

Referring to fig. 1-4, a safe and reliable gas switching device includes a main valve body 1, a first gas inlet 2, a second gas inlet 3, a right valve body 4, a left valve body 5, a sub valve body 6, a first valve core 7, a first seal ring 8, a second seal ring 9, a gas detector 10, a gas outlet 11, a solenoid valve 12, a gas transmission port 13, a gas pressure detector 14, an electric push rod 15, a third seal ring 16, a valve cover 17, a first cavity 18, a second valve core 19 and a second cavity 20, wherein the first gas inlet 2 and the second gas inlet 3 penetrate through the top of the main valve body 1, the first cavity 18 is connected to one side of the right valve body 4 and one side of the sub valve body 6, the first valve core 7 is arranged inside the first cavity 18, the second cavity 20 is connected to one side of the left valve body 5 and the other side of the sub valve body 6, the second valve core 19 is arranged inside the second cavity 20, the gas transmission port 13 penetrates through the bottoms of the first cavity 18 and the second cavity 20, air pressure detector 14 is all installed to one side of two gas transmission mouth 13, the top of first case 7 and second case 19 all is provided with first sealing washer 8, gaseous detector 10 is installed to top one side of inferior valve body 6, the both sides top of inferior valve body 6 all is provided with second sealing washer 9, it has gas outlet 11 to run through in the middle of inferior valve body 6's the bottom, solenoid valve 12 is installed to one side of gas outlet 11, left valve body 5, right valve body 4 and inferior valve body 6's bottom all is provided with valve gap 17, electric putter 15 is installed to valve gap 17's bottom, electric putter 15's both sides all are provided with third sealing washer 16.

Please refer to fig. 1-4, the electric push rods 15 are provided with a plurality of electric push rods 15, one end of each electric push rod 15 penetrates through the top of the valve cover 17, the electric push rods 15 are distributed at equal intervals, the valve cover 17 is fixed with the left valve body 5, the right valve body 4 and the sub valve body 6 respectively in a manner of bonding with a strong glue, so that the problem that the valve core cannot move due to small air pressure is avoided, the diameters of the first valve core 7 and the second valve core 19 are larger than the diameters of the first air inlet 2 and the second air inlet 3, two sides of the first valve core 7 and the second valve core 19 are respectively attached to the inner walls of the first cavity 18 and the second cavity 20, and the first valve core 7 and the second valve core 19 are in an inverted T shape, so as to facilitate the integral.

Please refer to fig. 1, 2 and 4, the two second sealing rings 9 are symmetrically arranged along the central line of the longitudinal axis of the secondary valve body 6, and the second sealing rings 9 are made of rubber material to prevent the gas from leaking during the replacement process, the first gas inlet 2 and the second gas inlet 3 have the same shape, and the first gas inlet 2 and the second gas inlet 3 are not communicated with each other, so as to facilitate the replacement of the gas and prevent the gas from mixing.

The working principle is as follows: firstly, when gas replacement is needed, air is conveyed to the first cavity 18 from the air conveying port 13 on one side by air pressure, so that the first valve core 7 vertically and horizontally moves, the first air outlet of the first air inlet 2 is blocked by the first sealing ring 8, meanwhile, the second air can be discharged from the second air inlet 3 through the air outlet 11 of the secondary valve body 6 by the second air, conversely, when the air is conveyed to the second cavity 20, the second valve core 19 vertically and horizontally moves, the second air outlet of the second air inlet 3 is blocked by the first sealing ring 8, so that the first air can be discharged from the air outlet 11, the air inlet can be blocked by the first sealing ring 8, air leakage is prevented, and secondly, the discharged air is prevented from the first cavity 18 or the second cavity 20 by the second sealing ring 9 and the third sealing ring 16, cause gaseous mixture, when needs air pressure to carry to the cavity inside, the atmospheric pressure through 14 detection air of atmospheric pressure detector, thereby judge its function that can push the case, if the detected value is unqualified, promote the valve core function through electric putter 15, thereby it is little to have avoided air pressure, can't make the case move, and can't in time to gas outlet and close, lead to the spacing signal trouble of case, whether there is the circumstances of mixing simultaneously through gas detection appearance 10 detection two kinds of gases, if unqualified, close gas outlet 11 through solenoid valve 12, remind the staff to overhaul.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a safe and reliable's gaseous auto-change over device, includes main valve body (1), right valve body (4), left valve body (5) and time valve body (6), its characterized in that: the gas detection valve is characterized in that a first gas inlet (2) and a second gas inlet (3) are respectively penetrated through the top of the main valve body (1), a first cavity (18) is connected with one side of the right valve body (4) and one side of the secondary valve body (6), a first valve core (7) is arranged in the first cavity (18), a second cavity (20) is connected with one side of the left valve body (5) and the other side of the secondary valve body (6), a second valve core (19) is arranged in the second cavity (20), gas transmission ports (13) are respectively penetrated through the bottoms of the first cavity (18) and the second cavity (20), a gas pressure detector (14) is respectively installed on one side of each gas transmission port (13), a first sealing ring (8) is respectively arranged on the tops of the first valve core (7) and the second valve core (19), and a gas detector (10) is installed on one side of the top of the secondary valve body (6), the utility model discloses a valve, including inferior valve body (6), valve cover (17), solenoid valve (12) are installed to the bottom of inferior valve body (6), the both sides top of inferior valve body (6) all is provided with second sealing washer (9), run through in the middle of the bottom of inferior valve body (6) has gas outlet (11), solenoid valve (12) are installed to one side of gas outlet (11), the bottom of left side valve body (5), right valve body (4) and inferior valve body (6) all is provided with valve cover (17), electric putter (15) are installed to the bottom of valve cover (17), the both sides of electric putter (15.

2. A safe and reliable gas switching apparatus as defined in claim 1, wherein: electric putter (15) are provided with a plurality ofly, and are a plurality of the top of valve gap (17) is run through to electric putter's (15) one end, and is a plurality of electric putter (15) equidistance distributes, valve gap (17) are fixed with left valve body (5), right valve body (4) and time valve body (6) respectively through the mode that the powerful gluing is binded.

3. A safe and reliable gas switching apparatus as defined in claim 1, wherein: the diameters of the first valve core (7) and the second valve core (19) are larger than the diameters of the first air inlet (2) and the second air inlet (3), two sides of the first valve core (7) and the second valve core (19) are attached to the inner walls of the first cavity (18) and the second cavity (20), and the first valve core (7) and the second valve core (19) are in an inverted T shape.

4. A safe and reliable gas switching apparatus as defined in claim 1, wherein: two second sealing rings (9) are symmetrically arranged along the central line of the longitudinal axis of the secondary valve body (6), and the second sealing rings (9) are made of rubber materials.

5. A safe and reliable gas switching apparatus as defined in claim 1, wherein: the first air inlet (2) and the second air inlet (3) are consistent in shape, and the first air inlet (2) and the second air inlet (3) are not communicated with each other.