Manual stop valve for spaceflight

Abstract

The utility model relates to the technical field of control valves, in particular to a spaceflight manual stop valve which comprises a valve body, the bottom end of the valve body is connected with a first connecting port in a penetrating mode, the outer wall of the valve body is connected with a second connecting port in a penetrating mode, a blocking groove is formed in the valve body, and an unloading groove is formed in the top end of the blocking groove. And the inner wall of the unloading groove is slidably connected with a sealing part, a first ball valve is arranged in the inner wall of the second connecting port, and a second ball valve is arranged in the inner wall of the first connecting port. According to the utility model, through the mutual combination of the first rotating handle, the second rotating handle, the first ball valve and the second ball valve, no matter which connecting port is used, the other connecting port can be closed, so that the stop valve forms a relatively closed space, and therefore, high-pressure gas cannot be wasted due to reverse flow, and the service life of the high-pressure gas is prolonged. The high-pressure bearing effect of the stop valve is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of control valves, in particular to a manual stop valve for aerospace use. Background Art

[0002] In the aerospace field, the design of various parts inside aerospace equipment needs to meet strict size and weight requirements, and there are corresponding requirements for service life. The weight of the parts used in aerospace equipment directly affects the operation of aerospace equipment. Some aerospace equipment will use manual stop valves, one end of which is connected to the high-pressure pipeline, and the other end is connected to the pipeline that needs to provide high pressure. Turn the manual adjustment screw (transmission pair), the manual adjustment screw drives the sliding rod to move, and the high-pressure pipeline interface is closed through the sliding rod. The same manual stop valve can also be used in the civilian field.

[0003] A manual stop valve for aerospace use with application number CN202122705914.6 comprises a valve body and a sliding rod; a sliding cavity for sliding movement of the sliding rod is provided inside the valve body; a first connecting port connected to one end of the sliding cavity is provided on the valve body; a second connecting port connected to the side of the sliding cavity is provided on the valve body; the sliding rod can close the first connecting port; a transmission pair for driving the sliding rod to slide is arranged in the valve body; a part of the sliding cavity close to the first connecting port is expanded to form a unloading groove, and a part of the sliding rod close to the first connecting port is expanded to abut against the inner wall of the unloading groove; the space enclosed by the unloading groove and the sliding rod is the unloading cavity; the sliding rod is provided with an unloading channel, and the unloading channel connects the first connecting port with the unloading cavity.

[0004] The above patent document has the advantages of being able to be used normally in high-pressure or ultra-high-pressure environments without increasing the volume, and improving the service life of the stop valve and the sealing effect of the first connection port. However, when the sealing portion is connected to the bottom end of the blocking groove, the effect of the above document can be achieved. When the sealing portion moves upward, the first connection port and the second connection port will be connected. The second connection port is not provided with a sealing structure, and the high-pressure gas will generate a backflow through the second connection port, causing a waste of high-pressure gas and reducing the high-pressure bearing effect of the stop valve. Utility Model Content

[0005] The utility model aims to solve the problem that the existing second connecting port is not provided with a sealing structure, high-pressure gas will generate backflow through the second connecting port, resulting in waste of high-pressure gas and reduced high-pressure bearing capacity, and proposes a manual stop valve for aerospace use.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A manual stop valve for aerospace use comprises a valve body, wherein the bottom end of the valve body is through-connected with a first connection port, the outer wall of the valve body is through-connected with a second connection port, a blocking groove is arranged inside the valve body, a unloading groove is opened at the top of the blocking groove, a sealing portion is slidably connected to the inner wall of the unloading groove, a first ball valve is arranged in the inner wall of the second connection port, and a second ball valve is opened in the inner wall of the first connection port.

[0008] Preferably, a valve groove is provided at the bottom end of the inner wall of the blocking groove, a blocking portion is fixedly connected to the bottom end of the sealing portion, and a movable valve sealing ring is fixedly connected to the bottom end of the blocking portion.

[0009] Preferably, the valve groove and the movable valve sealing ring are both circular in shape, the positions of the valve groove and the movable valve sealing ring are adapted to each other, and the cross-sectional area of ​​the blocking portion is larger than the cross-sectional area of ​​the unloading groove.

[0010] Preferably, a main unloading channel is opened at the middle end of the sealing part, a sliding rod is fixedly connected to the top end of the sealing part, a through hole is opened on the outer wall of the sliding rod, and a secondary channel is opened on the inner wall of the valve body close to the second connecting port.

[0011] Preferably, a first turning handle is rotatably connected to the outer wall of the first connecting port, and the first turning handle is fixedly connected to the second ball valve.

[0012] Preferably, a second handle is rotatably connected to the outer wall of the second connecting port, and the second handle is fixedly connected to the second ball valve.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. When the utility model is in use, the first turning handle, the second turning handle, the first ball valve and the second ball valve can be combined with each other so that no matter which connection port is in use, the other connection port can be closed, so that the stop valve forms a relatively closed space, so that the high-pressure gas will not flow back, and the high-pressure gas will not be wasted, and the high-pressure bearing effect of the stop valve is greatly improved.

[0015] 2. When the utility model is in use, through the mutual cooperation among the valve groove, the active valve sealing ring, the secondary channel and the unloading main channel, according to different usage conditions, when used at the first connection port, the valve groove and the active valve sealing ring can make the sealing effect of the stop valve better, and when used at the second connection port, the coordinated use between the secondary channel and the second ball valve can make the second connection port run smoothly without discharging gas from the outlet of the first connection port. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a manual stop valve for aerospace use proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of a half-section three-dimensional structure of a manual stop valve for aerospace use proposed by the utility model;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the second connection port of a manual stop valve for aerospace use proposed by the utility model;

[0019] Figure 4 The utility model is a schematic diagram of the three-dimensional structure of the first connecting port of a manual stop valve for aerospace use.

[0020] In the figure: 1 valve body, 2 first connection port, 3 second connection port, 4 blocking groove, 5 unloading groove, 6 sealing part, 7 first ball valve, 8 second ball valve, 9 valve groove, 10 blocking part, 11 live valve sealing ring, 12 unloading main channel, 13 through hole, 14 secondary channel, 15 first turning handle, 16 second turning handle, 17 sliding rod. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] Reference Figure 1-Figure 4 A manual stop valve for aerospace use comprises a valve body 1, the bottom end of the valve body 1 is through-connected with a first connection port 2, the outer wall of the valve body 1 is through-connected with a second connection port 3, a blocking groove 4 is arranged inside the valve body 1, a unloading groove 5 is opened at the top of the blocking groove 4, a sealing portion 6 is slidably connected to the inner wall of the unloading groove 5, a first ball valve 7 is arranged in the inner wall of the second connection port 3, and a second ball valve 8 is opened in the inner wall of the first connection port 2.

[0023] It should be noted that the specific models and specifications of the first ball valve 7 and the second ball valve 8 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the field, so it is not repeated here.

[0024] Furthermore, a valve groove 9 is formed at the bottom end of the inner wall of the blocking groove 4 , a blocking portion 10 is fixedly connected to the bottom end of the sealing portion 6 , and a movable valve sealing ring 11 is fixedly connected to the bottom end of the blocking portion 10 .

[0025] The material of the active valve sealing ring 11 is a rubber material with a relatively high density, and a similar rubber pad is arranged on the inner wall of the valve groove 9, so that the active valve sealing ring 11 and the valve groove 9 are more tightly fitted and connected.

[0026] Furthermore, the valve groove 9 and the movable valve sealing ring 11 are both circular in shape, the positions of the valve groove 9 and the movable valve sealing ring 11 are adapted to each other, and the cross-sectional area of ​​the blocking portion 10 is larger than the cross-sectional area of ​​the unloading groove 5 .

[0027] The diameter of the blocking portion 10 is larger than the diameter of the unloading groove 5 , so that the sealing portion 6 will not be dislocated when it is pushed to the top by the high-pressure gas below.

[0028] Furthermore, a main unloading channel 12 is opened at the middle end of the sealing part 6, a sliding rod 17 is fixedly connected to the top end of the sealing part 6, a through hole 13 is opened on the outer wall of the sliding rod 17, and a secondary channel 14 is opened on the inner wall of the valve body 1 near the second connecting port 3.

[0029] A sealing gasket is disposed on the top of the inner wall of the secondary channel 14 , so that when the blocking portion 10 below the sealing portion 6 moves to the top of the blocking groove 4 , the secondary channel 14 can be closed.

[0030] Furthermore, a first turning handle 15 is rotatably connected to the outer wall of the first connecting port 2 , and the first turning handle 15 is fixedly connected to the second ball valve 8 .

[0031] The rotating shaft of the first turning handle 15 passes through the outer wall of the second connecting port 3 and is fixedly connected to the top end of the second ball valve 8 .

[0032] Furthermore, a second turning handle 16 is rotatably connected to the outer wall of the second connecting port 3 , and the second turning handle 16 is fixedly connected to the second ball valve 7 .

[0033] The rotating shaft of the second turning handle 16 passes through the outer wall of the first connecting port 2 and is fixedly connected to the top end of the second ball valve 7 .

[0034] Working principle: According to different connection conditions, when the first connection port 2 is connected to high-pressure gas, the first ball valve 8 is opened by the first turning handle 15, the second connection port 3 is closed, and then the sealing part 6 and the blocking part 10 are pressed down so that the blocking part 10 is against the bottom end of the blocking groove 4. At this time, the active valve sealing ring 11 is connected to the valve groove 9, and the high-pressure gas passes through the unloading main channel 12 and the through hole 13.

[0035] When the second connecting port 3 is connected to the high-pressure gas, the second ball valve 7 is opened by the second turning handle 16, and the first ball valve 8 is closed at the same time, and the high-pressure gas can be blown directly into the inside of the stop valve through the secondary channel 14; finally, when the first connecting port 2 and the second connecting port 3 are all opened at the same time, the sealing part 6 and the blocking part 10 rise to the top under the influence of the high-pressure gas. At this time, the secondary channel 14 is blocked, and the high-pressure gas discharged from the two connecting ports is only discharged through the unloading main channel 12, so that the high-pressure gas will not flow back, so that the high-pressure gas will no longer be wasted, and the high-pressure bearing effect of the stop valve is greatly improved.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A manual stop valve for aerospace use, comprising a valve body (1), characterized in that: The bottom end of the valve body (1) is connected to a first connection port (2), the outer wall of the valve body (1) is connected to a second connection port (3), a blocking groove (4) is provided inside the valve body (1), a relief groove (5) is provided at the top of the blocking groove (4), a sealing portion (6) is slidably connected to the inner wall of the relief groove (5), a first ball valve (7) is provided in the inner wall of the second connection port (3), and a second ball valve (8) is provided in the inner wall of the first connection port (2).

2. A manual stop valve for aerospace use according to claim 1, characterized in that: The bottom end of the inner wall of the blocking groove (4) is provided with a valve groove (9), the bottom end of the sealing portion (6) is fixedly connected to a blocking portion (10), and the bottom end of the blocking portion (10) is fixedly connected to a movable valve sealing ring (11).

3. A manual stop valve for aerospace use according to claim 2, characterized in that: The valve groove (9) and the active valve sealing ring (11) are both circular in shape, the positions of the valve groove (9) and the active valve sealing ring (11) are matched, and the cross-sectional area of ​​the blocking portion (10) is larger than the cross-sectional area of ​​the unloading groove (5).

4. The manual stop valve for aerospace use according to claim 1, characterized in that: A main unloading channel (12) is provided at the middle end of the sealing portion (6), a sliding rod (17) is fixedly connected to the top end of the sealing portion (6), a through hole (13) is provided on the outer wall of the sliding rod (17), and a secondary channel (14) is provided on the inner wall of the valve body (1) on the side close to the second connection port (3).

5. The manual stop valve for aerospace use according to claim 1, characterized in that: A first turning handle (15) is rotatably connected to the outer wall of the first connecting port (2), and the first turning handle (15) is fixedly connected to the second ball valve (8).

6. The manual stop valve for aerospace use according to claim 1, characterized in that: A second turning handle (16) is rotatably connected to the outer wall of the second connecting port (3), and the second turning handle (16) is fixedly connected to the first ball valve (7).

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