阅读说明：本技术 一种新型波纹管连接装置 (Novel corrugated pipe connecting device ) 是由 严珊珊 严涛 李伟 史可任 季会剑 童海东 朱转 唐玉松 于 2021-08-03 设计创作，主要内容包括：本发明公开了一种新型波纹管连接装置,包括：波纹管、第一托盘组件和第二托盘组件,所述波纹管的一端密封设有第一托盘组件,且其另一端密封设有第二托盘组件,所述波纹管套设在阀杆的外侧,所述阀杆穿过阀盖组件并插入至阀体内设置,所述阀盖组件和阀体之间通过连接体连接,所述第一托盘组件密封设置于阀盖组件与连接体之间,所述第二托盘组件密封设置在位于所述阀体内的阀杆侧壁上。在阀杆外面通过第一托盘组件和第二托盘组件密封设置波纹管,可以将阀杆真空包含在里面,避免与介质直接接触,增强阀杆的使用寿命,另外与填料起到双重密封作用,降低阀杆泄漏的几率,减少维护,并且在保证密封性能稳定的同时,可降低阀杆填料老化的速度。(The invention discloses a novel corrugated pipe connecting device, which comprises: bellows, first tray subassembly and second tray subassembly, the sealed first tray subassembly that is equipped with of one end of bellows, and its other end is sealed to be equipped with second tray subassembly, the bellows cover is established in the outside of valve rod, the valve rod passes the valve gap subassembly and inserts to the valve body in and set up, connect through the connector between valve gap subassembly and the valve body, first tray subassembly is sealed to be set up between valve gap subassembly and connector, the sealed setting of second tray subassembly is lieing in on the valve rod lateral wall in the valve body. Set up the bellows through first tray subassembly and second tray subassembly seal outside the valve rod, can contain the valve rod vacuum inside, avoid with medium direct contact, the life of reinforcing valve rod plays double seal effect with packing in addition, reduces the probability that the valve rod leaked, reduces the maintenance to when guaranteeing sealing performance stability, can reduce the ageing speed of valve rod packing.)

1. A novel corrugated pipe connecting device is characterized by comprising: bellows (4), first tray subassembly (9) and second tray subassembly (10), the sealed first tray subassembly (9) that is equipped with of one end of bellows (4), and its other end is sealed to be equipped with second tray subassembly (10), the outside at valve rod (8) is established in bellows (4) cover, valve rod (8) pass valve gap subassembly (11) and insert and set up to valve body (1), connect through connector (2) between valve gap subassembly (11) and valve body (1), first tray subassembly (9) are sealed to be set up between valve gap subassembly (11) and connector (2), second tray subassembly (10) are sealed to be set up and are being located on valve rod (8) lateral wall in valve body (1).

2. A novel corrugated pipe connecting device as claimed in claim 1, wherein a groove body corresponding to the first tray assembly (9) is formed in each of the bottom surface of the valve cover assembly (11) and the top surface of the connecting body (2), a first gasket (5) is arranged in each groove body, and the first tray assembly (9) is hermetically connected with the valve cover assembly (11) and the connecting body (2) through the first gasket (5).

3. A new type of bellows connection device according to claim 1, characterized in that the bottom surface of the connection body (2) is sealingly connected to the top surface of the valve body (1) by means of a second gasket (3).

4. A novel corrugated pipe connecting device according to claim 1, wherein the valve cover assembly (11) and the connecting body (2) and the valve body (1) are fixed through a middle stud bolt (6) and a middle nut (7).

5. A new bellows connection device according to claim 1, characterized in that the first tray assembly (9) is connected to the bellows (4) by electric welding.

6. A new bellows connection device according to claim 1, characterized in that said first tray assembly (9) comprises: the device comprises a first tray (910) and a sealing detection mechanism (920), wherein a through hole (911) is formed in the side wall of the first tray (910), and the sealing detection mechanism (920) is arranged in the middle of the through hole (911);

the seal detection mechanism (920) includes: first round hole (921), one side of keeping away from first tray (910) axis in first round hole (921) communicates in proper order and is equipped with dysmorphism hole (922) and second round hole (923), the one end that dysmorphism hole (922) is close to first round hole (921) is equipped with first inclined plane, and its other end is equipped with first arcwall face, be equipped with first push pedal (924) in dysmorphism hole (922), one side that first push pedal (924) kept away from first tray (910) axis has connected gradually spliced pole (925), second push pedal (926), activity post (92924), one side periphery that first push pedal (924) is close to first round hole (921) is equipped with second inclined plane (928) that corresponds with the first inclined plane of dysmorphism hole (922), one side periphery that second push pedal (926) is close to second round hole (923) is equipped with second arcwall face (929) that corresponds with the first curved plane of dysmorphism hole (922), second round hole (923) internal fixation is equipped with limiting plate (9210), activity post (927) are kept away from the one end of second push pedal (926) is passed limiting plate (9210) set up, limiting plate (9210) with be connected with first spring (9211) between second push pedal (926), first spring (9211) cover is established the outside of activity post (927), be equipped with in second round hole (923) with activity post (927) complex trigger device (930).

7. The novel corrugated pipe connecting device as claimed in claim 6, wherein when the movable post (927) is forced to move to a side away from the first circular hole (921), the triggering device (930) will alarm after detecting the movement of the movable post (927), meanwhile, the second arc-shaped surface (929) of the second push plate (926) is tightly attached and sealed with the first arc-shaped surface of the special-shaped hole (922), and the second push plate (926) is made of elastic material.

8. A new bellows connection device according to claim 1, wherein the second tray assembly (10) comprises: the valve rod (8) penetrates through the center of the second tray (1010) and is in sealing connection with the second tray (1010), the sealing disc (1020) is movably sleeved on the outer side of the corrugated pipe (4), and the sealing disc (1020) is in threaded connection with the second tray (1010);

the top surface of second tray (1010) is equipped with ring channel (1011), be equipped with first sealing mechanism (12) in ring channel (1011), first sealing mechanism (12) with form first slot (1012) that is used for grafting bellows (4) between the medial surface of ring channel (1011), first sealing mechanism (12) with form first locking groove (1013) between the lateral surface of ring channel (1011), the bottom surface of sealed dish (1020) be equipped with second slot (1021) that first sealing mechanism (12) correspond, one side of second slot (1021) is equipped with second locking groove (1022), be equipped with second sealing mechanism (13) in second locking groove (1022), the bottom surface of sealed dish (1020) is equipped with the external screw thread, the lateral surface of first locking groove (1013) be equipped with the internal thread that the external screw thread of sealed dish (1020) corresponds, the bottom end of the sealing disc (1020) is inserted into the first locking groove (1013) and matched with the first sealing mechanism (12), the first sealing mechanism (12) is connected with the corrugated pipe (4) inserted into the first insertion groove (1012) in a sealing manner, the first sealing mechanism (12) is inserted into the second insertion groove (1021), the top end of the first sealing mechanism (12) is matched with the second sealing mechanism (13) in the second locking groove (1022), and the second sealing mechanism (13) is connected with the corrugated pipe (4) inserted into the first insertion groove (1012) in a sealing manner.

9. A new type of bellows connection device according to claim 8, characterized in that said first sealing means (12) comprise: the corrugated pipe sealing device comprises a first annular frame (121), a third gasket (122) and an annular clamping block (123) are arranged on the top surface of the first annular frame (121), an inserting block (124) is arranged on the top surface of the annular clamping block (123), a vertically arranged annular baffle plate (125) is arranged inside the first annular frame (121), a plurality of first sealing push plates (126) are arranged on one side, close to a first inserting groove (1012), of the annular baffle plate (125), the first sealing push plates (126) form a circular ring shape, a first sealing ring (127) is connected to one side, close to the first inserting groove (1012), of each first sealing push plate (126), the first sealing ring (127) is abutted to the outer surface of the corrugated pipe (4), a first pressing block (128) is arranged on one side, far away from the first sealing ring (127), of each first pressing block (128) penetrates through the annular baffle plate (125), one side of the first pressing block (128), which is close to the third gasket (122), is provided with an inclined surface, the other side of the first pressing block extends to be provided with a pressing plate, a first telescopic rod is connected between the pressing plate and the annular baffle plate (125), a second spring (129) is sleeved outside the first telescopic rod, a second telescopic rod is arranged on one side, which is far away from the first sealing push plate (126), of the annular baffle plate (125), the second telescopic rod is fixed in the first annular frame (121), a third spring (1210) is sleeved outside the second telescopic rod, a second pressing block (1211) is arranged at one end of the second telescopic rod, a push rod (1212) is arranged on one side of the second pressing block (1211), one end of the push rod (1212) extends out of the first annular frame (121) into the first locking groove (1013), and a third pressing block (1213) is arranged at the end part of the push rod extending out of the first annular frame (121), the third pressing block (1213) is matched with the bottom end of the sealing disc (1020);

the second sealing mechanism (13) includes: a second annular frame (131), a plurality of second sealing push plates (132) are arranged in the second annular frame (131), the plurality of second sealing push plates (132) form a circular ring shape, one side, close to the valve rod (8), of the plurality of second sealing push plates (132) is connected with a second sealing ring (133), the second sealing ring (133) abuts against the outer surface of the corrugated pipe (4), one side, far away from the valve rod (8), of each second sealing push plate (132) is provided with a fourth pressing block (134), one end of each fourth pressing block (134) extends out of the second annular frame (131) to the second locking groove (1022), a fourth spring (135) is sleeved on the outer side of each fourth pressing block (134), and the fourth spring (135) is connected between the second sealing push plates (132) and the second annular frame (131); the top surface of the second locking groove (1022) is provided with a clamping groove (1023) corresponding to the inserting block (124), and the fourth pressing block (134) is matched with the annular clamping block (123).

10. A novel bellows connection device according to claim 8, wherein the end of the bellows (4) connected to the second tray assembly (10) is smooth and cylindrical, and the second tray (1010) is welded or rotary sealed to the valve stem (8).

Technical Field

The invention relates to the technical field of stop valves, in particular to a novel corrugated pipe connecting device.

Background

At present, most of stop valves are sealed by the filler arranged between a valve rod and a valve cover component to realize the rotation of the valve rod, and the seals at the valve rod and the filler are quick in aging and easy to leak, so that the stop valves are ineffective and are maintained and replaced more frequently. Therefore, there is a need for a new type of bellows connection device that at least partially solves the problems of the prior art.

Disclosure of Invention

In this summary, concepts in a simplified form are introduced that are further described in the detailed description. This summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

To at least partially solve the above problems, the present invention provides a novel bellows connection device, comprising: bellows, first tray subassembly and second tray subassembly, the sealed first tray subassembly that is equipped with of one end of bellows, and its other end is sealed to be equipped with second tray subassembly, the bellows cover is established in the outside of valve rod, the valve rod passes the valve gap subassembly and inserts to the valve body in and set up, connect through the connector between valve gap subassembly and the valve body, first tray subassembly is sealed to be set up between valve gap subassembly and connector, the sealed setting of second tray subassembly is lieing in on the valve rod lateral wall in the valve body.

Preferably, the bottom surface of the valve cover assembly and the top surface of the connecting body are both provided with groove bodies corresponding to the first tray assembly, first gaskets are arranged in the groove bodies, and the first tray assembly is in sealing connection with the valve cover assembly and the connecting body through the first gaskets.

Preferably, the bottom surface of the connecting body is connected with the top surface of the valve body in a sealing mode through a second gasket.

Preferably, the valve cover assembly and the connecting body, and the connecting body and the valve body are fixed through a middle stud and a middle nut.

Preferably, the first tray assembly is connected to the bellows by electric welding.

Preferably, the first tray assembly includes: the device comprises a first tray and a sealing detection mechanism, wherein a through hole is formed in the side wall of the first tray, and the sealing detection mechanism is arranged in the middle of the through hole;

the seal detection mechanism includes: a first round hole, wherein one side of the first round hole, which is far away from the axis of the first tray, is sequentially communicated with a special-shaped hole and a second round hole, one end of the special-shaped hole, which is close to the first round hole, is provided with a first inclined plane, the other end of the special-shaped hole is provided with a first arc-shaped surface, a first push plate is arranged in the special-shaped hole, one side of the first push plate, which is far away from the axis of the first tray, is sequentially connected with a connecting column, a second push plate and a movable column, one side periphery of the first push plate, which is close to the first round hole, is provided with a second inclined plane corresponding to the first inclined plane of the special-shaped hole, one side periphery of the second push plate, which is close to the second round hole, is provided with a second arc-shaped surface corresponding to the first arc-shaped surface of the special-shaped hole, a limiting plate is fixedly arranged in the second round hole, one end of the movable column, which is far away from the second push plate, passes through the limiting plate, and a first spring is connected between the limiting plate and the second push plate, the first spring sleeve is arranged on the outer side of the movable column, and a trigger device matched with the movable column is arranged in the second round hole.

Preferably, when the movable column is stressed to move towards one side far away from the first round hole, the triggering device detects that the movable column can alarm after moving, meanwhile, the second arc-shaped surface of the second push plate is tightly attached to and sealed with the first arc-shaped surface of the special-shaped hole, and the second push plate is made of an elastic material.

Preferably, the second tray assembly includes: the valve rod penetrates through the center of the second tray and is in sealing connection with the second tray, the sealing disc is movably sleeved on the outer side of the corrugated pipe, and the sealing disc is in threaded connection with the second tray;

the top surface of second tray is equipped with the ring channel, be equipped with first sealing mechanism in the ring channel, first sealing mechanism with form the first slot that is used for grafting bellows between the medial surface of ring channel, first sealing mechanism with form first locking groove between the lateral surface of ring channel, the bottom surface of sealed dish is equipped with the second slot that first sealing mechanism corresponds, one side of second slot is equipped with second locking groove, be equipped with second sealing mechanism in the second locking groove, the bottom surface of sealed dish is equipped with the external screw thread, the lateral surface of first locking groove be equipped with the internal thread that corresponds with the external screw thread of sealed dish, the bottom of sealed dish insert to in the first locking groove and with first sealing mechanism cooperation, and make first sealing mechanism with insert to bellows sealing connection in the first slot, the first sealing mechanism is inserted into the second slot, the top end of the first sealing mechanism is matched with the second sealing mechanism in the second locking slot, and the second sealing mechanism is in sealing connection with the corrugated pipe inserted into the first slot.

Preferably, the first sealing mechanism includes: the corrugated pipe sealing device comprises a first annular frame, wherein a third gasket and an annular clamping block are arranged on the top surface of the first annular frame, an inserting block is arranged on the top surface of the annular clamping block, an annular baffle plate which is vertically arranged is arranged inside the first annular frame, a plurality of first sealing push plates are arranged on one side, close to a first slot, of the annular baffle plate, the first sealing push plates form a circular ring shape, a first sealing ring is connected to one side, close to the first slot, of the first sealing push plates, the first sealing ring is abutted to the outer surface of the corrugated pipe, a first pressing block is arranged on one side, far away from the first sealing ring, of each first sealing push plate, one end of each first pressing block penetrates through the annular baffle plate, an inclined surface is arranged on one side, close to the third gasket, of each first pressing block is provided with a pressing plate in an extending manner, and a first telescopic rod is connected between each pressing plate and the annular baffle plate, a second spring is sleeved outside the first telescopic rod, a second telescopic rod is arranged on one side, away from the first sealing push plate, of the annular baffle plate, the second telescopic rod is fixed in the first annular frame, a third spring is sleeved outside the second telescopic rod, a second pressing block is arranged at one end of the second telescopic rod, a push rod is arranged on one side of the second pressing block, one end of the push rod extends out of the first annular frame into the first locking groove, a third pressing block is arranged at the end, extending out of the first annular frame, of the push rod, and the third pressing block is matched with the bottom end of the sealing disc;

the second sealing mechanism includes: a plurality of second sealing push plates are arranged in the second annular frame, the plurality of second sealing push plates form an annular shape, one side, close to the valve rod, of the plurality of second sealing push plates is connected with a second sealing ring, the second sealing ring is abutted against the outer surface of the corrugated pipe, one side, far away from the valve rod, of each second sealing push plate is provided with a fourth pressing block, one end of each fourth pressing block extends into the second locking groove from the second annular frame, a fourth spring is sleeved on the outer side of each fourth pressing block, and the fourth spring is connected between the second sealing push plates and the second annular frame; the top surface of the second locking groove is provided with a clamping groove corresponding to the inserting block, and the fourth pressing block is matched with the annular clamping block.

Preferably, the end of the bellows connected to the second tray assembly is a smooth cylindrical shape, and the second tray is welded or rotary-sealed to the valve stem.

Compared with the prior art, the invention at least comprises the following beneficial effects:

according to the novel corrugated pipe connecting device, the corrugated pipe is arranged outside the valve rod in a sealing mode through the first tray assembly and the second tray assembly through the corrugated pipe sealing design, the valve rod can be contained in the corrugated pipe in a vacuum mode, direct contact with a medium is avoided, the service life of the valve rod is prolonged, the novel corrugated pipe connecting device and the filler play a double sealing role, the probability of valve rod leakage is reduced, maintenance is reduced, the sealing performance is guaranteed to be stable, meanwhile, the aging speed of the filler of the valve rod is reduced, the safety of production equipment is improved, the maintenance cost is reduced, frequent maintenance is not needed, and a clean and safe working environment is provided.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic sectional view of a novel bellows connecting device connected to a stop valve according to the present invention.

Fig. 2 is a schematic structural diagram of a bellows in the novel bellows connecting device according to the present invention.

Fig. 3 is a schematic cross-sectional view of a first tray assembly in the novel corrugated pipe connection device according to the present invention.

Fig. 4 is a schematic structural diagram of a sealing detection mechanism in the novel corrugated pipe connection device according to the present invention.

Fig. 5 is a schematic structural diagram of a second tray assembly in the novel corrugated pipe connection device according to the present invention.

Fig. 6 is a schematic cross-sectional view of a second tray in the novel corrugated pipe connection device according to the present invention.

Fig. 7 is a partially enlarged schematic structural view of a novel corrugated pipe connection device in fig. 5.

Fig. 8 is a schematic view of a connection structure of a first seal push plate and a first seal ring in the novel corrugated pipe connection device according to the present invention.

1 is a valve body, 2 is a connector, 3 is a second gasket, 4 is a corrugated pipe, 5 is a first gasket, 6 is a middle stud, 7 is a middle nut, 8 is a valve rod, 9 is a first tray component, 910 is a first tray, 911 is a through hole, 920 is a sealing detection mechanism, 921 is a first round hole, 922 is a special-shaped hole, 923 is a second round hole, 924 is a first push plate, 925 is a connecting column, 926 is a second push plate, 927 is a movable column, 928 is a second inclined plane, 929 is a second arc-shaped surface, 9210 is a limiting plate, 9211 is a first spring, 930 is a trigger device, 10 is a second tray component, 1010 is a second tray, 1011 is an annular groove, 1013 is a first slot, 1013 is a first locking groove, 1020 is a sealing disc, 1021 is a second slot, 1022 is a second locking groove, 1023 is a clamping groove, 11 is a valve cover component, 12 is a first sealing mechanism, 121 is a first annular frame, 122 is a third gasket, 123 is an annular clamping block, 123 is an annular frame, 124 is an insertion block, 125 is an annular stop block, 126 is a first sealing push plate, 127 is a first sealing ring, 128 is a first pressing block, 129 is a second spring, 1210 is a third spring, 1211 is a second pressing block, 1212 is a push rod, 1213 is a third pressing block, 13 is a second sealing mechanism, 131 is a second annular frame, 132 is a second sealing push plate, 133 is a second sealing ring, 134 is a fourth pressing block, and 135 is a fourth spring.

Detailed Description

The present invention is further described in detail below with reference to the drawings and examples so that those skilled in the art can practice the invention with reference to the description.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

As shown in fig. 1 to 8, the present invention provides a novel corrugated pipe connection device, including: bellows 4, first tray subassembly 9 and second tray subassembly 10, the sealed first tray subassembly 9 that is equipped with of one end of bellows 4, and its other end is sealed to be equipped with second tray subassembly 10, the outside at valve rod 8 is established to bellows 4 cover, valve rod 8 passes valve gap subassembly 11 and inserts to setting up in valve body 1, connect through connector 2 between valve gap subassembly 11 and the valve body 1, first tray subassembly 9 is sealed to be set up between valve gap subassembly 11 and connector 2, the sealed setting of second tray subassembly 10 is being located on the 8 lateral walls of valve rod in the valve body 1.

The working principle of the technical scheme is as follows: the both ends of bellows 4 are sealing connection respectively have first tray subassembly 9 and second tray subassembly 10, and first tray subassembly 9 passes through valve gap subassembly 11 and connector 2 sealing connection, and second tray subassembly 10 is sealed to be set up in the outside of valve rod 8, consequently is located the inboard valve rod 8 of bellows 4 and is in vacuum state, can not direct and medium contact, keeps apart valve rod 8 and medium through bellows 4.

The beneficial effects of the above technical scheme are that: through the design of above-mentioned structure, utilize bellows 4 sealed design, it sets up bellows 4 to seal through first tray subassembly 9 and second tray subassembly 10 in the valve rod 8 outside, can contain valve rod 8 vacuum inside, avoid with medium direct contact, strengthen valve rod 8's life, play double sealing effect with the filler in addition, reduce the probability that valve rod 8 leaked, reduce the maintenance, and when guaranteeing sealing performance stability, can reduce the ageing speed of valve rod 8 filler, increase production facility security, maintenance cost has been reduced, need not frequent maintenance, clean safe operational environment is provided.

In one embodiment, the bottom surface of the valve cover assembly 11 and the top surface of the connecting body 2 are both provided with a groove body corresponding to the first tray assembly 9, a first gasket 5 is arranged in the groove body, and the first tray assembly 9 is hermetically connected with the valve cover assembly 11 and the connecting body 2 through the first gasket 5.

The working principle and the beneficial effects of the technical scheme are as follows: through the first gasket 5 that sets up, can make first tray subassembly 9 sealing connection between valve gap subassembly 11 and connector 2, guaranteed the sealing performance that first tray subassembly 9 is connected, and then guaranteed that the medium can not leak to bellows 4 in, reduce the chance of valve rod 8 and medium contact.

In one embodiment, the bottom surface of the connecting body 2 is sealingly connected to the top surface of the valve body 1 by a second gasket 3.

The working principle and the beneficial effects of the technical scheme are as follows: through the setting of second gasket 3, the sealing performance of being connected between multiplicable connector 2 and the valve body 1, and then guarantee the normal work of stop valve.

In one embodiment, the bonnet assembly 11 and the connecting body 2 and the valve body 1 are fixed through a middle stud 6 and a middle nut 7.

The working principle and the beneficial effects of the technical scheme are as follows: through the cooperation of well stud 6 and well cap nut 7, make between valve gap subassembly 11 and the connector 2, be connected between connector 2 and the valve body 1 inseparabler, cooperate first gasket 5 and second gasket 3, realize better sealed effect.

In one embodiment, the first tray assembly 9 is connected to the bellows 4 by electric welding.

The working principle and the beneficial effects of the technical scheme are as follows: the first tray assembly 9 can be connected with the corrugated pipe 4 in a welding mode to realize sealing of the two, and a medium is prevented from entering the corrugated pipe 4.

In one embodiment, the first tray assembly 9 comprises: the device comprises a first tray 910 and a sealing detection mechanism 920, wherein a through hole 911 is arranged on the side wall of the first tray 910, and the sealing detection mechanism 920 is arranged in the middle of the through hole 911;

the seal detection mechanism 920 includes: the first round hole 921, one side of the first round hole 921, which is far away from the axis of the first tray 910, is sequentially communicated with a special-shaped hole 922 and a second round hole 923, one end of the special-shaped hole 922, which is close to the first round hole 921, is provided with a first inclined plane, the other end of the special-shaped hole is provided with a first push plate 924, one side of the first push plate 924, which is far away from the axis of the first tray 910, is sequentially connected with a connecting column 925, a second push plate 926 and a movable column 927, one side periphery of the first push plate 924, which is close to the first round hole 921, is provided with a second inclined plane 928 corresponding to the first inclined plane of the special-shaped hole 922, one side periphery of the second push plate 926, which is close to the second round hole 923, is provided with a second arc 929 corresponding to the first arc of the special-shaped hole 922, a limiting plate 9210 is fixedly arranged in the second round hole 923, one end of the movable column 927, which is far away from the second push plate 926, passes through the limiting plate 9210, a first spring 9211 is connected between the limiting plate 9210 and the second push plate 926, the first spring 9211 is sleeved on the outer side of the movable column 927, and a triggering device 930 matched with the movable column 927 is arranged in the second round hole 923;

when the movable post 927 is forced to move to a side far away from the first circular hole 921, the triggering device 930 will alarm after detecting the movement of the movable post 927, and meanwhile, the second arc-shaped surface 929 of the second push plate 926 is tightly attached to and sealed with the first arc-shaped surface of the special-shaped hole 922, and the second push plate 926 is made of an elastic material;

the triggering device 930 comprises a rubber block, a pressure sensor arranged in the rubber block and a wireless transmission module connected with the pressure sensor, the wireless transmission module is in communication connection with the control terminal, and the method for detecting the movement of the movable column 927 by the triggering device 930 is as follows:

step 1, when the movable column 927 moves the compression trigger 930, the pressure sensor outputs a first pressure value to the control terminal, and monitors the time for maintaining the first pressure value;

step 2, if the time for maintaining the first pressure value is within a first time threshold, it is determined that the corrugated pipe 4 leaks, the sealing state between the packing in the valve cover assembly 11 and the valve rod 8 is normal, and the control terminal sends out a first alarm;

if the time for maintaining the first pressure value is less than the first time threshold value, the pressure sensor outputs a second pressure value which is less than the first pressure value, if the time for maintaining the second pressure value is within the second time threshold value, it is determined that the filler in the corrugated pipe 4 and the filler in the valve cover assembly 11 are leaked at the same time, and the control terminal sends out a second alarm to remind that the stop valve needs to be maintained or replaced;

the control terminal further comprises a pressure calibration module, wherein the pressure calibration module is used for calibrating the pressure value measured by the pressure sensor, and the calibration method comprises the following steps:

step A1, calculating a pressure deviation value:

Q_i+1＝Q_i*(1-ε)+ε*F_i

wherein Q is_i+1Is the latest pressure deviation value, i.e. the pressure deviation value updated after the ith pressure measurement, Q_iIs the deviation value of the ith pressure measurement, epsilon is the filter coefficient of a filter in the pressure calibration module, F_iIs the pressure value of the ith measurement;

step A2, calculating the actual pressure value of the movable column 927 compression pressure sensor measured by the pressure sensor as F based on the latest pressure deviation value_True：

F_True＝F_i+1-Q_i+1

Wherein, F_i+1Is the pressure value measured by the pressure sensor at the i +1 th time.

The working principle of the technical scheme is as follows: the sealing detection mechanism 920 is embedded inside the first tray 910 and is disposed at the center of the through hole 911 formed in the side wall of the first tray 910, when the corrugated tube 4 and the valve rod 8 are no longer in a vacuum state, that is, when a medium enters between the corrugated tube 4 and the valve rod 8, the medium can increase the air pressure between the corrugated tube 4 and the valve rod 8 and is greater than the external atmospheric pressure, so that the gas can enter the first circular hole 921 from the through hole 911 and acts on the first push plate 924, and after the first push plate 924 is stressed, the connecting column 925, the second push plate 926 and the movable column 927 are driven to move to one side far away from the axis of the first tray 910, the first spring 9211 is compressed, and the second push plate 926 can abut against the end seal of the special-shaped hole 922 by continuing to move, that the first arc-shaped surface and the second arc-shaped surface 929 interact to realize sealing, the gas cannot continue to flow out from the other side of the through hole 911, and after the movable column 927 moves, the trigger 930 will detect the movement of the movable column 927, and the trigger 930 will send out an alarm to prompt people that the corrugated pipe 4 is abnormal, that is, the corrugated pipe 4 loses the sealing and isolating medium functions; the specific triggering device 930 may be a pressure sensor, which is disposed in the second round hole 923, and when the movable column 927 moves, the pressure sensor is pressurized, so that the triggering device 930 is activated and gives an alarm;

when the movable column 927 compresses the rubber block, if the rubber block does not completely rebound after deformation, a pressure value is generated on the pressure sensor, calibration needs to be performed on a detection zero point of the pressure sensor to prevent the pressure sensor from transmitting the pressure value to the control terminal by mistake, and the movable column 927 applies pressure to the pressure sensor every time, which is equivalent to continuously applying pulse type pressure to the pressure sensor, so that the pressure sensor transmits the pulse type pressure value, and therefore, the pressure value detected by the trigger device 930 can be calibrated by using a filter function, for example, when the detected pressure value is equal to a pressure deviation value, namely, a filter coefficient epsilon is 1, the pressure value applied to the pressure sensor by the movable column 927 detected by the pressure sensor is 0, namely, the movable column 927 is not in contact with the trigger device 930, and therefore, an alarm cannot be triggered.

The beneficial effects of the above technical scheme are that: through the design of the structure, the sealing working state of the corrugated pipe 4 can be detected in real time through the sealing detection mechanism 920, and gives an alarm, when the device is in an initial state, the first push plate 924 is abutted with one end of the special-shaped hole 922, and the first push plate 924 cannot be pulled out of the shaped hole 922 through the action of the first and second inclined surfaces 928, and the air pressure of the through holes 911 on both sides of the sealing detection mechanism 920 is equal, only when the air pressure in the bellows 4 and the valve rod 8 is increased, the first push plate 924 is forced to push the second push plate 926, although the corrugated pipe 4 leaks, the second push plate 926 can seal the special-shaped hole 922 under the action of force, the arrangement of the first arc-shaped surface 929 and the second arc-shaped surface 929 can resist larger pressure, better sealing is realized, a medium cannot leak out of the through hole 911, and meanwhile, the function of sealing detection can be realized, so that two purposes are achieved; the second push plate 926 is made of rubber material, so that the second push plate can have smaller elastic deformation, and the sealing effect is better; through the arranged pressure sensor, the movement of the movable column 927 can be detected, so that people can know the sealing working condition of the corrugated pipe 4, the sealing of the corrugated pipe 4 is monitored in real time, and the use convenience of the stop valve is improved;

by adopting the method to calibrate the pressure value detected by the pressure sensor, the detected pressure value can be more accurate, the condition of transmitting pressure to the control terminal by mistake is prevented, and the condition of false alarm is prevented.

In one embodiment, the second tray assembly 10 includes: the valve rod 8 penetrates through the center of the second tray 1010 and is in sealing connection with the second tray 1010, the sealing disc 1020 is movably sleeved on the outer side of the corrugated pipe 4, and the sealing disc 1020 is in threaded connection with the second tray 1010;

the top surface of second tray 1010 is equipped with ring channel 1011, be equipped with first sealing mechanism 12 in the ring channel 1011, first sealing mechanism 12 with form the first slot 1012 that is used for grafting bellows 4 between the medial surface of ring channel 1011, first sealing mechanism 12 with form first locking groove 1013 between the lateral surface of ring channel 1011, the bottom surface of sealed dish 1020 be equipped with second slot 1021 that first sealing mechanism 12 corresponds, one side of second slot 1021 is equipped with second locking groove 1022, be equipped with second sealing mechanism 13 in the second locking groove 1022, the bottom surface of sealed dish 1020 is equipped with the external screw thread, the lateral surface of first locking groove 1013 be equipped with the internal thread that the external screw thread of sealed dish 1020 corresponds, the bottom of sealed dish 1020 insert to in the first locking groove 1013 and with first sealing mechanism 12 cooperates, and the first sealing mechanism 12 is hermetically connected with the corrugated pipe 4 inserted into the first insertion groove 1012, the first sealing mechanism 12 is inserted into the second insertion groove 1021, the top end of the first sealing mechanism 12 is matched with the second sealing mechanism 13 in the second locking groove 1022, and the second sealing mechanism 13 is hermetically connected with the corrugated pipe 4 inserted into the first insertion groove 1012.

The working principle of the technical scheme is as follows: when the bottom end of the corrugated pipe 4 is installed, the sealing disc 1020 is sleeved outside the bottom end of the corrugated pipe 4, then the bottom end of the corrugated pipe 4 is inserted into the first insertion groove 1012, after the bottom end of the corrugated pipe is inserted to the bottom, the bottom end of the sealing disc 1020 is screwed into the first locking groove 1013, at the moment, the bottom end of the sealing disc 1020 is matched with the first sealing mechanism 12, meanwhile, the top end of the first sealing mechanism 12 is inserted into the second locking groove 1022 to be matched with the second sealing mechanism 13, so that the side faces of the first sealing mechanism 12 and the second sealing mechanism 13 act on the outer side wall of the corrugated pipe 4 at the same time, further, under the action force, the inner side wall of the corrugated pipe 4 is tightly attached to the outer side wall of the first insertion groove 1012, the outer side wall of the corrugated pipe 4 is connected with the first sealing mechanism 12 and the second sealing mechanism 13 in a sealing mode, and the bottom end of the corrugated pipe 4 is installed in a sealing mode.

The beneficial effects of the above technical scheme are that: through the design of above-mentioned structure, through the cooperation of first sealing mechanism 12 and second sealing mechanism 13, make the bottom of bellows 4 and valve rod 8 realize sealed dismantlement and be connected, be convenient for to the change of bellows 4 to when changing, sealed dish 1020 and first tray 910 and the subassembly on it all need not change repeatedly usable, resources are saved.

In one embodiment, the first sealing mechanism 12 includes: a third gasket 122 and an annular clamping block 123 are arranged on the top surface of the first annular frame 121, an insertion block 124 is arranged on the top surface of the annular clamping block 123, an annular baffle 125 which is vertically arranged is arranged inside the first annular frame 121, a plurality of first sealing push plates 126 are arranged on one side of the annular baffle 125 close to the first insertion groove 1012, the plurality of first sealing push plates 126 form a circular ring shape, a first sealing ring 127 is connected to one side of the plurality of first sealing push plates 126 close to the first insertion groove 1012, the first sealing ring 127 is abutted to the outer surface of the corrugated pipe 4, a first pressing block 128 is arranged on one side of each first sealing push plate 126 far from the first sealing ring 127, one end of the first pressing block 128 penetrates through the annular baffle 125, an inclined surface is arranged on one side of the first pressing block 128 close to the third gasket 122, and a pressing plate extends from the other side of the first pressing block 128, a first telescopic rod is connected between the pressing plate and the annular baffle 125, a second spring 129 is sleeved outside the first telescopic rod, a second telescopic rod is arranged on one side, away from the first sealing push plate 126, of the annular baffle 125, the second telescopic rod is fixed in the first annular frame 121, a third spring 1210 is sleeved outside the second telescopic rod, a second pressing block 1211 is arranged at one end of the second telescopic rod, a push rod 1212 is arranged on one side of the second pressing block 1211, one end of the push rod 1212 extends out of the first annular frame 121 into the first locking groove 1013, a third pressing block 1213 is arranged at the end of the push rod 1212 extending out of the first annular frame 121, and the third pressing block 1213 is matched with the bottom end of the sealing disc 1020;

the second sealing mechanism 13 includes: a plurality of second sealing push plates 132 are arranged in the second annular frame 131, the plurality of second sealing push plates 132 form an annular shape, one side, close to the valve rod 8, of the plurality of second sealing push plates 132 is connected with a second sealing ring 133, the second sealing ring 133 abuts against the outer surface of the corrugated pipe 4, one side, away from the valve rod 8, of each second sealing push plate 132 is provided with a fourth pressing block 134, one end of each fourth pressing block 134 extends out of the second annular frame 131 into the second locking groove 1022, a fourth spring 135 is sleeved outside the fourth pressing block 134, and the fourth spring 135 is connected between the second sealing push plates 132 and the second annular frame 131; the top surface of the second locking groove 1022 is provided with a locking groove 1023 corresponding to the insert block 124, and the fourth pressing block 134 is matched with the annular locking block 123.

The working principle of the technical scheme is as follows: when the bottom end of the bellows 4 is sealingly attached, the bottom end of the bellows 4 is first inserted into the first insertion groove 1012, the inner side wall of the bellows 4 abuts against the inner side wall of the first insertion groove 1012, the outer side wall of the bellows 4 abuts against the inner side wall of the first seal ring 127, then, when the sealing disc 1020 is connected to the second tray 1010, the bottom end of the sealing disc 1020 pushes the third pressing block 1213 downward, the third pressing block 1213 moves downward while driving the push rod 1212 and the second pressing block 1211 to move, the second pressing block 1211 deforms the third spring 1210 in an extending manner, and the second pressing block 1211 acts on the inclined surface of the first pressing block 128 to move the first pressing block 128 to a side close to the corrugated tube 4, the first pressing block 128 moves to make the first telescopic rod retract and compress the second spring 129, and the movement of the first pressing block 128 also enables the first sealing push plate 126 to extrude the first sealing ring 127 to one side of the corrugated pipe 4, so that the first sealing ring 127 is tightly attached to the outer side wall of the corrugated pipe 4; when the first sealing mechanism 12 is sealed, the annular clamping block 123 is inserted into the second locking groove 1022, the insertion block 124 is inserted into the clamping groove 1023, the end part of the inner side of the annular clamping block 123 close to the second sealing mechanism 13 is an inclined plane, the inclined plane and the fourth pressing block 134 act to enable the fourth pressing block 134 to push the second sealing push plate 132 to one side of the corrugated pipe 4, so that the fourth spring 135 is stretched and deformed, the second sealing ring 133 is tightly attached to the outer side wall of the corrugated pipe 4, the inner side wall of the corrugated pipe 4 is tightly attached to the inner side wall of the first insertion groove 1012 to realize sealing, and the inner wall of the annular groove 1011 is higher than the outer wall, so that the inner wall of the annular groove 1011, the first sealing mechanism 12 and the second sealing mechanism 13 jointly act on the inner side wall and the outer side wall of the corrugated pipe 4 to realize sealing of the corrugated pipe 4;

it should be noted that, the plurality of first sealing push plates 126 are equivalent to an annular sealing push plate and are evenly divided into a plurality of units, and the inner side walls of the plurality of units are fixedly connected with the integrally arranged first sealing rings 127, so that when the plurality of first sealing push plates 126 are stressed, the circumferential stress of the first sealing rings 127 is more even, and better sealing is realized, and the structure of the plurality of second sealing push plates 132 is the same as that of the first sealing push plates 126.

The beneficial effects of the above technical scheme are that: through the design of above-mentioned structure, through the third gasket 122 that sets up, make the sealing connection between sealed dish 1020 and the second tray 1010 realize, and through the threaded connection between sealed dish 1020 and the second tray 1010, realize the locking of first sealing mechanism 12 and second sealing mechanism 13 and fix, first sealing washer 127 and second sealing washer 133 make bellows 4 between sealing washer and the first slot 1012 seal under the mating reaction of first sealing mechanism 12 and second sealing mechanism 13, better sealed bellows 4 prevents its phenomenon that the leakage from appearing, and under the effect of each spring, if dismantle bellows 4, each spring can make every adapting unit resume to initial condition, guarantee that sealing mechanism can used repeatedly, when resources are saved, better assurance sealing mechanism's sealing performance.

In one embodiment, the end of the bellows 4 connected to the second tray assembly 10 is a smooth cylindrical shape, and the second tray 1010 is welded or rotary sealed to the valve stem 8.

The working principle and the beneficial effects of the technical scheme are as follows: the end of the corrugated pipe 4 connected with the second tray assembly 10 is set to be a smooth cylinder shape, so that the corrugated pipe can be more easily inserted into the first insertion groove 1012 to realize a better sealing state, the installation and the disassembly are convenient, the second tray 1010 and the valve rod 8 can be selected to be welded or connected in a rotary sealing mode, the welding is simpler and easier to operate, the rotary sealing connection can prevent the corrugated pipe 4 from twisting when the valve rod 8 rotates, and the service life of the corrugated pipe is further ensured.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

While embodiments of the invention have been disclosed above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.