CN211624195U

CN211624195U - Stop valve for high-pressure hydrogenation

Info

Publication number: CN211624195U
Application number: CN201922261659.3U
Authority: CN
Inventors: 杨熙翀
Original assignee: Zhejiang Yongsheng Technology Co ltd
Current assignee: Zhejiang Yongsheng Technology Co ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-10-02
Anticipated expiration: 2029-12-16

Abstract

The utility model relates to a valve especially relates to a stop valve for high pressure hydrogenation. Stop valve for high pressure hydrogenation, including valve body, disk seat, case, valve rod and be used for driving actuating mechanism that the valve rod removed, the valve body include that the medium gets into end, medium discharge end and valve rod and run through the end, the valve body be close to valve rod run through the end department and be provided with the valve gap, bolted connection has the gland on the valve gap, the valve rod runs through gland and valve gap in proper order, the one end edge that the valve gap is close to the gland is provided with the holding tank, the valve rod of holding tank and valve body runs through to form between the end inner wall and holds the chamber, holds the intracavity and is provided with self-sealing ring, the holding tank all is provided with the anticreep inclined plane with self-sealing ring's contact. The utility model discloses have and to avoid the valve gap to shift effectively and realize that the valve gap self sealss, pressurized big more strong, improve beneficial effect such as overall stability moreover.

Description

Stop valve for high-pressure hydrogenation

Technical Field

The utility model relates to a valve especially relates to a stop valve for high pressure hydrogenation.

Background

In the hydrotreating process, distillate oil hydrogenation modification, residual oil hydrogenation modification, vacuum gas oil hydrogenation modification, catalytic dewaxing, isomerization dewaxing, straight-run hydrogenation, secondary processing light and heavy distillate oil hydrogenation, lubricating oil hydrogenation, paraffin wax/microcrystalline wax/vaseline hydrogenation and conventional hydrocracking are carried out; hydrogenation of coal and coal tar, and coal liquefaction to produce gasoline, diesel oil, LPG, benzene, toluene, xylene, various olefins, oxygen-containing organic compounds, etc. Therefore, in the hydrotreating process, the working condition environment where the valve is located is a high-temperature, high-pressure and high-corrosion working condition, the sealing performance of the valve is particularly important under the working condition environment, in the existing stop valve, the valve rod penetrating end of the valve body is positioned through the valve cover, but because the internal pressure of the valve body in the hydrotreating process is higher, the valve cover in the existing valve is easily stressed and has a tendency of moving towards the direction far away from the valve body, after the valve is used for a period of time, the sealing ring is aged, and the valve cover can move to cause leakage. And current valve is that actuating mechanism's rotation directly drives the valve rod rotation and feeds, also can take place radial rotation when valve rod axial displacement promptly, and the moment of torsion of the rotatory in-process of valve rod also can cause the valve rod to feed poor stability, and then leads to the valve gap not hard up and pressurized aversion.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at the above problem, provide one kind can avoid the valve gap to shift effectively and realize the valve gap self sealss, moreover pressurized big leakproofness stronger more, improve overall stability's stop valve for high pressure hydrogenation.

The purpose of the utility model is mainly realized by the following scheme: the utility model provides a stop valve for high pressure hydrogenation, includes valve body, disk seat, case, valve rod and is used for driving the actuating mechanism that the valve rod removed, the valve body include that medium gets into end, medium discharge end and valve rod and run through the end, the valve body be close to valve rod run through end department and be provided with the valve gap, bolted connection has the gland on the valve gap, the valve rod runs through gland and valve gap in proper order, the one end edge that the valve gap is close to the gland is provided with the holding tank, the valve rod of holding tank and valve body runs through to form between the end inner wall and holds the chamber, holds the intracavity and is provided with the self-sealing ring, the one end and the gland butt of self-sealing ring, the holding tank all is provided with the anticreep inclined plane. In the hydrogenation process, high-pressure medium enters from a medium inlet end on the valve body, a channel is formed when a gap exists between the valve seat and the valve core, and the medium is discharged from a medium outlet end through the channel between the valve seat and the valve core; when the sealing surface between the valve seat and the valve core is attached, the channel between the valve seat and the valve core is closed to realize the cut-off of the medium, and at the moment, the valve is closed. The position of the valve core is controlled by a valve rod, the axial movement of the valve rod drives the valve core to move, the movement of the valve rod is driven by a driving mechanism, and the driving mechanism can be an existing hand wheel mechanism which is manually rotated or an existing electric or pneumatic automatic mechanism. When the valve core is far away from the valve seat, the high-pressure medium passes through a channel between the valve seat and the valve core, and at the moment, the valve cover is subjected to the high pressure of the high-pressure medium and has a tendency of moving towards the direction far away from the valve seat. One end bolted connection who keeps away from the disk seat at the valve gap has the gland, and the one end edge that is close to the gland at the valve gap sets up the holding tank, the holding tank runs through to form between the end inner wall with the valve rod of valve body and holds the chamber, hold the intracavity and install self-sealing ring, the anticreep inclined plane has between self-sealing ring and the holding tank, the anticreep inclined plane runs through the one end orientation that keeps away from the gland to the valve rod and reduces gradually by the one end that is close to the gland to the distance between the end inner wall, the pressure that the valve gap received is big more promptly, the anticreep inclined plane decomposes the external force that the valve gap receives, component after the decomposition makes valve gap and. The self-sealing ring is abutted against the pressing cover, and the pressing cover is utilized to limit the self-sealing ring, so that the self-sealing ring is firmly embedded between the valve cover and the valve seat. Utilize the anticreep inclined plane between holding tank and the self-sealing ring in the whole valve, make the valve gap atress big more, the pressure of self-sealing ring between valve gap and disk seat is big more, and the leakproofness is stronger more, even the self-sealing ring is ageing, causes the aversion of the little range of valve gap, still can make pressure between valve gap, self-sealing ring and the valve body three big more, and the leakproofness only can be more and more strong, realizes the self sealedly.

Preferably, the one end that the valve rod is close to actuating mechanism be connected with the driving head through rolling bearing, the driving head links to each other with actuating mechanism, the valve body is close to valve rod through end department and extends towards the direction of keeping away from the disk seat and has the support, one side that the support is close to the valve rod is provided with the direction boss, be provided with two staple bolt clamping pieces that are used for preventing the radial rotation of valve rod on the outer wall of valve rod, the valve rod is located between two staple bolt clamping pieces, two staple bolt clamping pieces pass through bolted connection together, one side of staple bolt clamping piece is located the direction. The valve rod is connected with the driving mechanism through the driving head, the driving mechanism rotates to drive the driving head to rotate and axially move, the driving head is connected with the valve rod through the rotating bearing, and the valve rod only axially moves. And set up two staple bolt clamping pieces on the valve rod outer wall, the valve rod is located between two staple bolt clamping pieces, utilize the staple bolt structure on the staple bolt clamping piece to press from both sides tight valve rod, pass through bolted connection two staple bolt clamping pieces again together, the one end of staple bolt clamping piece is located the support department that the valve body extends out, support department sets up the direction boss, the one end of staple bolt clamping piece slides along the direction boss on the boss that leads, and then the radial rotation of valve rod has been avoided, utilize the direction boss to spacing and the direction of staple bolt clamping piece promptly, realize preventing changeing of valve rod, can reduce the moment of torsion that the valve rod received when avoiding the valve rod rotatory, and then prevent that the valve gap is not hard up the dislocation, the stability of valve gap is improved, further.

Preferably, the guide boss is provided with a scale groove for measuring length, and a pointer is fixedly arranged at the edge of one side of the hoop clamping piece close to the guide boss. The pointer of staple bolt clamping piece one side can slide on the boss that leads, and the pointer can correspond the length measurement's on the boss that leads scale groove simultaneously, and then the displacement amount of feeding of can visual display valve rod.

Preferably, the valve core is provided with a positioning hole at the axis, a positioning sleeve is arranged at the positioning hole, one end of the positioning sleeve is positioned in the positioning hole, the other end of the positioning sleeve radially extends to form a positioning ring, the edge of the positioning ring is attached to the inner wall of the valve body, a connecting hole is formed at the axis of the positioning sleeve, and one end of the valve rod penetrates through the connecting hole and is connected with the valve core. Set up the locating hole in the axis department of case, installation position sleeve in the locating hole, the one end that the locating hole was kept away from to the position sleeve forms the holding ring, and the edge of holding ring moves along the valve body inner wall, and when the connecting hole of position sleeve axis department was run through to the valve rod, the position sleeve can be close to the tip outside formation protection of case at the valve rod, reinforcing structural strength, and the weakest position of valve rod can not fly out when the occurence of failure outside the pressure-bearing boundary of valve.

Preferably, a packing groove is formed between the valve cover and the valve rod, a disc spring is arranged in the middle of the packing groove, and packing is filled in the packing groove. The packing groove between the valve cover and the valve rod is filled with packing, the packing adopts flexible graphite low-dissipation combined packing, and has the advantages of high temperature resistance, corrosion resistance, self lubrication, small thermal expansion rate, small heat loss and strong sealing performance.

Therefore, the utility model discloses a stop valve for high pressure hydrogenation possesses following advantage: utilize the anticreep inclined plane between holding tank and the self-sealing ring in the whole valve, make the valve gap atress big more, the pressure of self-sealing ring between valve gap and disk seat is big more, and the leakproofness is stronger more, even the self-sealing ring is ageing, causes the aversion of the little range of valve gap, still can make pressure between valve gap, self-sealing ring and the valve body three big more, and the leakproofness only can be more and more strong, realizes the self sealedly.

Drawings

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

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a partially enlarged view of B in fig. 1.

Illustration of the drawings: 1-valve body, 2-medium inlet end, 3-medium outlet end, 4-valve seat, 5-valve core, 6-positioning hole, 7-positioning sleeve, 8-positioning ring, 9-driving mechanism, 10-driving head, 11-valve rod, 12-valve cover, 13-accommodating groove, 14-self-sealing ring, 15-anti-falling inclined surface, 16-gland, 17-bracket, 18-guiding boss, 19-hoop clamping piece, 20-pointer and 21-scale groove.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example 1: as shown in fig. 1, 2, 3, a stop valve for high pressure hydrogenation, including valve body 1, disk seat 4, case 5, valve rod 11 and the actuating mechanism 9 that is used for driving the valve rod and removes, the valve body includes medium entering end 2, medium discharge end 3 and valve rod run through the end, the valve body is close to valve rod run through end department and is provided with the valve gap, bolted connection has gland 16 on the valve gap, the valve rod runs through gland and valve gap 12 in proper order, the one end edge that the valve gap is close to the gland is provided with holding tank 13, holding tank and the valve rod of valve body run through and form between the end inner wall and hold the chamber, it is provided with self-sealing ring 14 to hold the intracavity, self-sealing ring's one end and gland butt, holding tank and self-sealing ring's contact surface all is provided with anticree. The one end that the valve rod is close to actuating mechanism is connected with the driving head 10 through rolling bearing, the driving head links to each other with actuating mechanism, the valve body is close to valve rod through end department and extends towards the direction of keeping away from the disk seat and has support 17, one side that the support is close to the valve rod is provided with direction boss 18, be provided with two staple bolt clamping pieces 19 that are used for preventing the radial rotation of valve rod on the outer wall of valve rod, the valve rod is located between two staple bolt clamping pieces, two staple bolt clamping pieces pass through bolted connection together, one side of staple bolt clamping piece is located the. The guide boss is provided with a scale groove 21 for measuring length, and a pointer 20 is fixedly arranged at the edge of one side of the hoop clamping piece close to the guide boss. The axis department of case is provided with locating hole 6, and locating hole department is provided with position sleeve 7, and the one end of position sleeve is located the locating hole, and the other end of position sleeve radially extends and forms holding ring 8, and the edge of holding ring is laminated with the inner wall of valve body, and the axis department of position sleeve is provided with the connecting hole, and the one end through connection hole of valve rod links to each other with the case. A packing groove is formed between the valve cover and the valve rod, a disc spring is arranged in the middle of the packing groove, and packing is filled in the packing groove.

In the hydrogenation process, high-pressure medium enters from a medium inlet end on the valve body, a channel is formed when a gap exists between the valve seat and the valve core, and the medium is discharged from a medium outlet end through the channel between the valve seat and the valve core; when the sealing surface between the valve seat and the valve core is attached, the channel between the valve seat and the valve core is closed to realize the cut-off of the medium, and at the moment, the valve is closed. The position of the valve core is controlled by a valve rod, the axial movement of the valve rod drives the valve core to move, the movement of the valve rod is driven by a driving mechanism, and the driving mechanism can be an existing hand wheel mechanism which is manually rotated or an existing electric or pneumatic automatic mechanism. When the valve core is far away from the valve seat, the high-pressure medium passes through a channel between the valve seat and the valve core, and at the moment, the valve cover is subjected to the high pressure of the high-pressure medium and has a tendency of moving towards the direction far away from the valve seat. One end bolted connection who keeps away from the disk seat at the valve gap has the gland, and the one end edge that is close to the gland at the valve gap sets up the holding tank, the holding tank runs through to form between the end inner wall with the valve rod of valve body and holds the chamber, hold the intracavity and install self-sealing ring, the anticreep inclined plane has between self-sealing ring and the holding tank, the anticreep inclined plane runs through the one end orientation that keeps away from the gland to the valve rod and reduces gradually by the one end that is close to the gland to the distance between the end inner wall, the pressure that the valve gap received is big more promptly, the anticreep inclined plane decomposes the external force that the valve gap receives, component after the decomposition makes valve gap and. The self-sealing ring is abutted against the pressing cover, and the pressing cover is utilized to limit the self-sealing ring, so that the self-sealing ring is firmly embedded between the valve cover and the valve seat. Utilize the anticreep inclined plane between holding tank and the self-sealing ring in the whole valve, make the valve gap atress big more, the pressure of self-sealing ring between valve gap and disk seat is big more, and the leakproofness is stronger more, even the self-sealing ring is ageing, causes the aversion of the little range of valve gap, still can make pressure between valve gap, self-sealing ring and the valve body three big more, and the leakproofness only can be more and more strong, realizes the self sealedly. The valve rod is connected with the driving mechanism through the driving head, the driving mechanism rotates to drive the driving head to rotate and axially move, the driving head is connected with the valve rod through the rotating bearing, and the valve rod only axially moves. And set up two staple bolt clamping pieces on the valve rod outer wall, the valve rod is located between two staple bolt clamping pieces, utilize the staple bolt structure on the staple bolt clamping piece to press from both sides tight valve rod, pass through bolted connection two staple bolt clamping pieces again together, the one end of staple bolt clamping piece is located the support department that the valve body extends out, support department sets up the direction boss, the one end of staple bolt clamping piece slides along the direction boss on the boss that leads, and then the radial rotation of valve rod has been avoided, utilize the direction boss to spacing and the direction of staple bolt clamping piece promptly, realize preventing changeing of valve rod, can reduce the moment of torsion that the valve rod received when avoiding the valve rod rotatory, and then prevent that the valve gap is not hard up the dislocation, the stability of valve gap is improved, further. The pointer of staple bolt clamping piece one side can slide on the boss that leads, and the pointer can correspond the length measurement's on the boss that leads scale groove simultaneously, and then the displacement amount of feeding of can visual display valve rod. Set up the locating hole in the axis department of case, installation position sleeve in the locating hole, the one end that the locating hole was kept away from to the position sleeve forms the holding ring, and the edge of holding ring moves along the valve body inner wall, and when the connecting hole of position sleeve axis department was run through to the valve rod, the position sleeve can be close to the tip outside formation protection of case at the valve rod, reinforcing structural strength, and the weakest position of valve rod can not fly out when the occurence of failure outside the pressure-bearing boundary of valve. The packing groove between the valve cover and the valve rod is filled with packing, the packing adopts flexible graphite low-dissipation combined packing, and has the advantages of high temperature resistance, corrosion resistance, self lubrication, small thermal expansion rate, small heat loss and strong sealing performance.

It should be understood that this example is for illustrative purposes only and is not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.

Claims

1. The utility model provides a stop valve for high pressure hydrogenation, includes valve body, disk seat, case, valve rod and is used for driving the actuating mechanism that the valve rod removed, the valve body include that the medium gets into end, medium discharge end and valve rod and run through the end, its characterized in that, the valve body be close to valve rod run through the end department and be provided with the valve gap, bolted connection has the gland on the valve gap, the valve rod runs through gland and valve gap in proper order, the one end edge that the valve gap is close to the gland is provided with the holding tank, the valve rod of holding tank and valve body runs through to form between the end inner wall and holds the chamber, holds the intracavity and is provided with the self-sealing ring, the one end and the gland butt of self-sealing ring, the holding tank all is provided with the anticree.

2. The stop valve for high pressure hydrogenation according to claim 1, wherein the end of the valve rod close to the driving mechanism is connected with a driving head through a rotating bearing, the driving head is connected with the driving mechanism, a support extends towards the direction away from the valve seat at the end of the valve body close to the valve rod through end, a guide boss is arranged on one side of the support close to the valve rod, two hoop clamping pieces for preventing the valve rod from rotating radially are arranged on the outer wall of the valve rod, the valve rod is arranged between the two hoop clamping pieces, the two hoop clamping pieces are connected together through a bolt, and one side of the hoop clamping piece is arranged on the guide boss.

3. The stop valve for high pressure hydrogenation according to claim 2, wherein the guide boss is provided with a scale groove for measuring the length, and a pointer is fixedly arranged on one side edge of the hoop clamping piece close to the guide boss.

4. The stop valve for high-pressure hydrogenation according to claim 1, 2 or 3, wherein a positioning hole is formed at the axis of the valve core, a positioning sleeve is arranged at the positioning hole, one end of the positioning sleeve is positioned in the positioning hole, the other end of the positioning sleeve extends radially to form a positioning ring, the edge of the positioning ring is attached to the inner wall of the valve body, a connecting hole is formed at the axis of the positioning sleeve, and one end of the valve rod penetrates through the connecting hole and is connected with the valve core.

5. The stop valve for high-pressure hydrogenation according to claim 1, 2 or 3, wherein a packing groove is arranged between the valve cover and the valve rod, a disc spring is arranged in the middle of the packing groove, and packing is filled in the packing groove.