Anti-crystallization heat preservation jacket slag discharge valve

Abstract

The utility model discloses an anti-crystallization heat preservation jacket deslagging valve, which relates to the technical field of valves, and comprises a valve body, a small-diameter channel and a large-diameter channel are arranged in the valve body, the center of the small-diameter channel is correspondingly communicated with the center of the large-diameter channel, a valve seat is arranged on one side of the small-diameter channel facing the large-diameter channel, and the valve seat is communicated with the large-diameter channel. A ball body is arranged on the side, facing the interior of the small-diameter channel, of the large-diameter channel, overflowing holes are formed in the ball body, the ball body is attached to the valve seat, an inner cavity of the valve is free of dead corners and adopts linear arc transition, media are unobstructed without resistance, small-particle and slag media cannot be accumulated and blocked, and normal work of the valve is guaranteed. In the opening and closing process of the ball body, the scraper can automatically scrape off particles and residues on the spherical surface, the sealing surface of the valve seat is protected against damage, the heat preservation jacket is arranged outside the valve body, high-temperature steam or heat conduction oil is introduced, and it is guaranteed that a medium easy to crystallize has flowability.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely relates to a kind of anti-crystallization heat preservation jacketed slag valve. BACKGROUND

[0002] Ball valve is widely used in long-distance oil and chemical pipeline for its simple structure, small installation space, good sealing performance and quick opening and closing. However, the existing conventional ball valve has a inherent defect, i.e. the inner cavity corner is formed between the ball and the two sealing valve seats, and the medium enters the inner cavity during opening and closing. For the medium containing particles and slag, the particles and slag are deposited in the inner cavity corner, and the inner cavity of the valve is gradually filled after long use, so that the ball is locked and cannot rotate, the valve stem is twisted under the torque impact of actuator, the sealing is failed, and the valve is damaged. Therefore, the conventional ball valve can only be used for clean medium, and the effect is good. Figure 1 For the medium with crystallization and particles, such as molten salt, hydrocarbon, ester and ether, the conventional ball valve cannot be used. In order to exert the advantages of ball valve, a new structure and function of ball valve needs to be developed. SUMMARY

[0003] The utility model aims to solve the problem of the inner cavity corner accumulation of conventional ball valve.

[0004] TECHNICAL SOLUTION

[0005] To solve the above problems, the utility model provides the technical scheme as follows:

[0006] A kind of anti-crystallization heat preservation jacketed slag valve, including valve body, small diameter channel and large diameter channel are equipped in valve body, the small diameter channel and the large diameter channel center are correspondingly connected, the side of the small diameter channel towards the large diameter channel is equipped with valve seat, the side of the large diameter channel towards small diameter channel is equipped with ball, the ball is equipped with overflow hole, the ball is attached to the valve seat, the side of the valve seat towards large diameter channel is equipped with outer expansion inclined structure, the outer expansion inclined structure is attached to the surface of the ball, valve stem is connected on the valve body.

[0007] Further, push ring is arranged between the valve seat and the small diameter channel, butterfly spring is arranged between the push ring and the end face of the small diameter channel, sealing ring is arranged between the push ring and the valve seat, first dustproof ring is arranged on the inner side of the small diameter channel and abuts against the valve seat.

[0008] Further, valve cover is arranged at the end of the large diameter channel, the valve cover extends into the large diameter channel, and the valve cover structure inside the large diameter channel is arc transition structure.

[0009] Further, the inclined outward expanding structure of the valve seat is provided with a scraper structure matched with the ball.

[0010] Further, the upper and lower sides of the ball are provided with connecting grooves, and the valve rod is connected in the connecting groove on the upper side of the ball.

[0011] Further, the bottom of the valve body is provided with a bottom cover, and the bottom cover is provided with a bottom cover sleeve inserted into the connecting groove on the lower side of the ball.

[0012] Further, the bottom cover sleeve is provided with a second dustproof ring matched with the ball, and the valve rod is provided with a third dustproof ring matched with the ball.

[0013] Further, the upper side of the valve body is fixedly provided with an upper cover, the valve rod is rotatably arranged in the upper cover, the upper side of the upper cover is provided with a pneumatic actuator, and the pneumatic actuator is connected with the valve rod.

[0014] Further, the upper cover is sequentially provided with a packing, a packing pressing sleeve and a packing pressing plate around the valve rod.

[0015] Further, the outer side of the valve body is provided with a heat preservation jacket, one side of the heat preservation jacket is provided with a heating medium inlet interface on the upper side, the other side of the heat preservation jacket is provided with a heat preservation medium outlet interface on the lower side, and the lower side of the heat preservation jacket is provided with a blowdown plug.

[0016] Beneficial effects

[0017] Compared with the prior art, the technical scheme has the following beneficial effects:

[0018] The technical scheme provided by the utility model adopts a single valve seat bidirectional sealing structure design, reduces the same function of the rear valve seat, can seal in the positive and negative directions of the medium, has no dead angle in the inner cavity of the valve, adopts linear arc transition in the inner cavity, the medium is smooth and has small resistance, and the particles and slag medium will not be accumulated and blocked, so that the normal work of the valve is ensured, the valve seat adopts a scraper type structure design, the scraper can automatically scrape off the particles and slag on the surface of the ball during the opening and closing of the ball, the sealing surface of the valve seat is protected from being damaged, the outer valve body is wrapped by a heat preservation jacket, when used in a harsh environment where the medium is easy to crystallize and has particles, circulating heating medium is introduced into the heat preservation jacket through the heating medium inlet and outlet joints, the heat conduction effect makes the temperature in the inner cavity of the valve higher than the crystallization temperature of the medium, so that the crystallization of the medium is ensured to be smooth, and the normal work of the valve is ensured without being blocked. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a dead angle accumulation schematic view of a conventional ball valve in the background technology of the utility model;

[0020] Figure 2 It is a structure sectional view of embodiment 1 of the utility model.

[0021] Figure 3 This is a front view of Embodiment 1 of the present invention;

[0022] Figure 4 for Figure 2 Enlarged view of point I in the middle;

[0023] Figure 5 for Figure 2 Enlarged schematic diagram at point II;

[0024] Figure 6 for Figure 2 Enlarged schematic diagram of point III in the middle. Detailed Implementation

[0025] To make the technical solution of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Example 1

[0027] Combined with appendix Figures 2-6 A heat-insulating jacketed slag discharge valve for anti-crystallization includes a valve body 1. The valve body 1 has two channels with different inner diameters: a small-diameter channel 101 with a smaller inner diameter and a large-diameter channel 102 with a larger inner diameter. The small-diameter channel 101 and the large-diameter channel 102 are centrally located and their center lines overlap. The small-diameter channel 101 and the large-diameter channel 102 have a stepped structure and are used to supply the medium flowing through the valve body 1.

[0028] A valve seat 13 is provided on the channel wall of the small diameter channel 101 facing the large diameter channel 102. The side of the valve seat 13 facing the large diameter channel 102 has an outwardly sloping structure, and the other side of the valve seat 13 faces the small diameter channel 101. The end faces of the small diameter channel 101 and the valve seat 13 are parallel planes.

[0029] A gap is provided between the end face of the valve seat 13 facing the small diameter channel 101 and the end face of the small diameter channel 101 facing the valve seat 13. A push ring 11 is provided in the gap between the small diameter channel 101 and the valve seat. A butterfly spring 10 is provided between the end wall of the push ring 11 facing the small diameter channel 101 and the end face of the small diameter channel 101. A sealing ring 12 is provided on the side of the push ring 11 facing the valve seat 13. An annular protrusion is provided on the push ring 11, which passes through the sealing ring 12 and abuts against the valve seat 13. A first dustproof ring 9 is provided at the contact position between the inner surface of the small diameter channel 101 and the valve seat 13.

[0030] The medium in the valve body 1 flows from the small-diameter channel 101 to the large-diameter channel 102 during use, and the dustproof ring is arranged at the inlet of the valve seat 13 to effectively prevent the medium particles and slag from entering the spring cavity of the valve seat, thereby preventing the spring from being pressed and the valve seat from being locked.

[0031] The large-diameter channel 102 is provided with a ball 6 on the side facing the small-diameter channel 101, the ball 6 is provided with connecting grooves on the upper and lower sides, the valve body 1 is provided with a bottom cover 5 inserted into the large-diameter channel 102, the bottom cover 5 is installed on the valve body 1 by screws, the bottom cover 5 is provided with a bottom cover shaft sleeve, the bottom cover shaft sleeve of the bottom cover 5 is inserted into the large-diameter channel 102 and the connecting groove on the lower side of the ball 6, and the bottom cover shaft sleeve of the bottom cover 5 is provided with a second dustproof ring 14 matched with the connecting groove on the lower side of the ball 6.

[0032] The valve rod 16 drives the ball 6 to rotate to control the connection and blockage of the channel in the valve body 1, the ball 6 rotates on the bottom cover shaft sleeve while synchronously rotating with the valve rod 16.

[0033] The valve rod 16 is connected in the connecting groove on the upper side of the ball 6, the valve rod 16 is provided with a third dustproof ring 15 matched with the connecting groove on the upper side of the ball 6, and the connecting positions of the bottom cover shaft sleeve, the valve rod 16 and the connecting groove of the ball 6 are provided with dustproof rings to prevent the medium particles from entering the shaft sleeve and prevent the valve rod from being locked and the torque from sharply increasing.

[0034] The side of the ball 6 close to the small-diameter channel 101 is arranged in the valve seat 13, the side of the valve seat 13 facing the large-diameter channel 102 is provided with an outwardly expanding inclined structure, the ball 6 is spherical or spherical-like, the ball 6 is correspondingly arranged with the valve seat 13, the side of the ball 6 can be arranged in the valve seat 13, at this time, the upper and lower surfaces of the ball 6 are attached to the outwardly expanding inclined surface of the valve seat 13 facing the large-diameter channel 102, the outwardly expanding inclined surface of the valve seat 13 is provided with a scraper structure 131 at the position in contact with the surface of the ball 6, the scraper structure 131 is in abutment with the upper and lower surfaces of the ball 6, and the scraper structure 131 is preferably an arc-shaped scraper corresponding to the surface of the ball 6. During the opening and closing rotation of the ball 6, the scraper can automatically scrape off the particles and slag on the surface of the ball to protect the sealing surface of the valve seat from being damaged.

[0035] The upper side of the valve body 1 is provided with an upper cover 17 for installing the valve rod 16, the upper cover 17 and the valve body 1 are fixed together by screwing, the upper cover 17 is provided with a support 21 fixed by screwing, the upper side of the support 21 is connected with a pneumatic actuator 22, the driving interface of the pneumatic actuator 22 is fixedly connected with the valve rod 16 in the support 21, the user drives the pneumatic actuator 22 to drive the valve rod 16 to rotate and then drive the ball 6 to rotate, the pneumatic actuator 22 is used for operation, has high safety factor and large output torque, and is particularly suitable for the opening and closing of the particle and slag medium.

[0036] The ball 6 is provided with a through-flow hole. When the ball 6 rotates to a position where the through-flow hole is communicated with the large-diameter channel 102 and the small-diameter channel in the valve body 1, the medium in the valve body 1 can flow normally. When the ball 6 rotates to a position where the through-flow hole is perpendicular to the large-diameter channel 102 and the small-diameter channel 101 in the valve body 1, the ball 6 separates the large-diameter channel 102 and the small-diameter channel 101, and the large-diameter channel 102 and the small-diameter channel 101 are no longer communicated.

[0037] The upper cover 17 is provided with a packing groove at the position where the valve rod 16 rotates. The packing groove is filled with packing 18. After the packing groove is filled with the packing 18, a packing pressing sleeve 19 is arranged on the packing 18. The packing pressing sleeve 19 is further provided with a packing pressing plate 20. The packing pressing plate 20 abuts against the packing pressing sleeve 18. The packing pressing plate 20 is fixedly installed on the upper cover 17 by screws. The packing 18 and the packing pressing sleeve 19 and the packing pressing plate 20 can ensure the sealing of the valve rod 16.

[0038] The valve body 1 is externally covered with a heat preservation jacket 7. The heat preservation jacket 7 is used for heating the valve body 1. The valve body is designed to be wrapped by the heat preservation jacket. When used in a harsh environment where the medium is easy to crystallize and contains particles, circulating heating is conducted in the heat preservation jacket through the heating medium inlet and outlet joints. The medium is high-temperature steam, heat-conducting oil or the like. The heat conduction effect makes the temperature in the valve body cavity higher than the crystallization temperature of the medium, so that the medium is not crystallized and has smoothness, and the valve is not blocked and works normally.

[0039] The heat preservation jacket 7 is provided with a heating medium inlet interface 23 on one side of the upper side. The heat preservation jacket 7 is provided with a heat preservation medium outlet interface 24 on the other side of the lower side. The heat preservation medium enters the heat preservation jacket 7 from the heating medium inlet interface 23. After filling the entire heat preservation jacket 7, the heat preservation medium flows out through the heat preservation medium outlet interface 24. The heating medium inlet interface 23 and the heat preservation medium outlet interface 24 are respectively connected to the supply port and the recovery port of the heat preservation medium pipeline, so as to ensure that the heat preservation medium with constant temperature continuously flows into the heat preservation jacket 7. The heat preservation jacket 7 is provided with a blowdown plug 8 on the lower side. The blowdown plug 8 is used for blowdown of the heat preservation jacket 7.

[0040] The inlet and outlet joints ensure that the heating medium enters from the top and exits from the bottom, effectively making the heating medium circulate and heat in the heat preservation jacket, so as to ensure that the medium in the valve body cavity is smooth and not crystallized. When the valve is maintained, the heat preservation jacket can be cleaned by the blowdown plug.

[0041] The valve body 1 is fixedly provided with a valve cover 2 on the valve body 1 at the port in the large-diameter channel 102 through a screw 3. A sealing gasket 4 is arranged between the valve cover 2 and the valve body 1. The valve cover 2 extends to the inside of the large-diameter channel 102. The structure of the valve cover 2 in the large-diameter channel 102 is an arc transition structure, which is convenient for medium flow.

[0042] The valve body 1 adopts a single valve seat bidirectional sealing structure design, reduces the rear valve seat to meet the same function, and the medium can be sealed in the positive and negative directions, the valve cavity has no dead angle, the inner cavity adopts a linear arc transition, the medium is smooth and has small resistance, the particles and slag medium cannot be accumulated and blocked, and normal work of the valve is ensured.

[0043] The above-described embodiments only express several implementation manners of the present application, the description is relatively specific and detailed, but it cannot be understood as a limitation on the patent scope of the present application. It should be noted that, for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. An anti-crystallization, heat-insulated, jacketed, slag valve, characterized in that, Including the valve body, the valve body is provided with small diameter channel and large diameter channel, the small diameter channel and the large diameter channel center correspondingly communicate, the small diameter channel is provided with valve seat to the side of the large diameter channel, the large diameter channel is provided with ball to the side of small diameter channel, the ball is provided with overflow hole, the ball is attached to the valve seat, the valve seat is provided with the expansion inclined structure to the side of large diameter channel, the expansion inclined structure is attached to the surface of the ball, the valve body is connected with valve rod.

2. The anti-crystallization, heat-traced, refractory valve of claim 1, wherein, The valve seat and the small diameter channel are provided with a push ring, the push ring and the small diameter channel end face are provided with a butterfly spring, the push ring and the valve seat are provided with a sealing ring, the small diameter channel inside is provided with a first dustproof ring abutting against the valve seat.

3. The anti-crystallization, heat-traced, refractory valve of claim 1, wherein, The end of the large diameter channel is provided with a valve cover, the valve cover extends into the large diameter channel, the valve cover structure inside the large diameter channel is arc transition structure.

4. The anti-crystallization, thermally insulated, double-jacketed, plug valve for removing slag according to claim 1, characterized in that, The inclined expansion structure of the valve seat is provided with a scraper structure attached to the ball.

5. The anti-crystallization, thermally insulated, double-jacketed, plug valve for removing slag according to claim 1, characterized in that, The upper and lower sides of the ball are provided with connecting grooves, the valve rod is connected in the connecting groove on the upper side of the ball.

6. An anti-crystallization, heat-traced, refractory valve according to claim 5, wherein, The bottom of the valve body is provided with a bottom cover, the bottom cover is provided with a bottom cover sleeve inserted into the connecting groove on the lower side of the ball.

7. An anti-crystallization, heat-traced, refractory valve according to claim 6, wherein, The bottom cover sleeve is provided with a second dustproof ring matched with the ball, and the valve rod is provided with a third dustproof ring matched with the ball.

8. The anti-crystallization, thermally insulated, double-jacketed, plug valve for removing residue according to claim 1, characterized in that, The upper side of the valve body is fixedly provided with an upper cover, the valve rod is rotatably arranged in the upper cover, the upper side of the upper cover is provided with a pneumatic actuator connected with the valve rod.

9. A crystallization resistant, thermally insulated, double-jacketed, plug valve for removing slag, according to claim 8, characterized in that, The upper cover is provided with filler, filler pressing sleeve and filler pressing plate around the valve rod in sequence.

10. The anti-crystallization, thermally insulated, double-jacketed, plug valve for removing residue according to claim 1, characterized in that, The outer side of the valve body is provided with a heat preservation jacket, one side of the heat preservation jacket is provided with a heating medium inlet interface, the other side of the heat preservation jacket is provided with a heat preservation medium outlet interface, and the lower side of the heat preservation jacket is provided with a blowdown plug.

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