CN210397781U - Slag discharge valve - Google Patents
Slag discharge valve Download PDFInfo
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- CN210397781U CN210397781U CN201921298204.2U CN201921298204U CN210397781U CN 210397781 U CN210397781 U CN 210397781U CN 201921298204 U CN201921298204 U CN 201921298204U CN 210397781 U CN210397781 U CN 210397781U
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Abstract
The utility model provides a slag discharging valve, which comprises a valve body, an actuating mechanism arranged on the valve body, a valve seat, a ball body and a medium channel arranged in the valve body, wherein the ball body is driven by the actuating mechanism to rotate in the medium channel to realize the opening and closing of a slag locking valve; the ball inlet side is provided with a first sealing structure, the ball outlet side is provided with a second sealing structure, and the second sealing structure realizes reverse self-sealing through the pressurized fluid introduced into the medium channel on the ball inlet side. The utility model discloses the sediment valve is not only the moment of torsion light, and is sealed effectual moreover, can also clear away the granule type slag body that adheres at the valve lumen inner wall.
Description
Technical Field
The utility model relates to a coal gasifier lock fill system, concretely relates to slag discharging valve.
Background
The coal gasifier lock hopper system mainly comprises a lock hopper, a slag tank, a slag locking valve, a slag discharging valve and a flushing water tank, wherein two valves are used for inlet slag collection and slag locking, one valve is used for outlet slag discharging (slag discharging valve), and the other valve is used for cutting off flushing water of the lock hopper. In the operation process, the slag tank needs to be pressurized when slag is collected, and the slag locking valve is opened when the pressure of the slag tank is close to that of the gasification furnace; after slag is collected, closing the slag locking valve, releasing pressure of the slag tank, and opening a slag discharging valve after the slag tank is discharged to normal pressure; after the slag discharge is finished and the slag tank is washed, the slag discharge valve is closed, then the slag tank is pressurized, and the circulation is repeated in sequence.
At present, the commonly used slag discharging valves mainly comprise a one-way sealing lock hopper slag discharging valve and a two-way sealing lock hopper slag discharging valve. As shown in figure 1, the one-way sealing lock bucket slag discharging valve only seals one valve seat in front, and the outlet end has no valve seat, so that the one-way sealing lock bucket slag discharging valve has the advantages that a slag-water mixture cannot be accumulated on the middle wall of the valve body, slag is easy to discharge, and the torque is light; the disadvantage is that the valve is prone to loss of seal and valve leakage or failure. The two-way sealing lock hopper slag discharge valve is shown in figure 2, the front and the rear of the two-way sealing lock hopper slag discharge valve are provided with sealing valve seats, and the two valve seats tightly hold a ball body during sealing, so that the two-way sealing lock hopper slag discharge valve has the advantages that the ball body is relatively stable, displacement cannot occur, and the sealing cannot be easily lost; the disadvantage is that the torque is large in the valve opening and closing process, and the slag is often accumulated in the valve middle cavity and is not easy to discharge.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a sediment valve that the moment of torsion is light, and is sealed effectual.
In order to achieve the above purpose, the present invention adopts the following technical solution.
A slag-off valve of a gasification furnace lock bucket comprises a valve body, an actuating mechanism arranged on the valve body, a valve seat, a ball body and a medium channel arranged in the valve body, wherein the actuating mechanism drives the ball body to rotate in the medium channel to open and close the slag-off valve; the ball inlet side is provided with a first sealing structure, the ball outlet side is provided with a second sealing structure, and the second sealing structure realizes reverse self-sealing through the pressurized fluid introduced into the medium channel on the ball inlet side.
Further, the second sealing structure includes: the second pressing ring is fixedly connected to the valve body, the second valve seat is matched with the ball body and the second pressing ring, the second spring is arranged between the second pressing ring and the second valve seat, one end of the second spring abuts against the second pressing ring, the other end of the second spring abuts against the second valve seat, and when the second spring is in a free state, the inclined end face of the second valve seat is separated from the ball body and has a gap of 5-10mm for discharging slag materials in a cavity in the valve; when the second valve seat is under the action of pressurized fluid, the second valve seat compresses the second spring and moves along the direction of the medium channel until the inclined end face of the second valve seat is in close contact with the ball body to form sealing.
Furthermore, the first sealing structure further comprises a pipeline, one end of the pipeline is communicated with the medium channel on the inlet side of the ball body, the other end of the pipeline is connected with the second valve seat, and pressurized fluid in the medium channel on the inlet side of the ball body is led to the second valve seat through the pipeline to serve as axial external force applied to the second valve seat, so that the second valve seat is driven to move axially.
For convenient operation, a valve for controlling the introduction and the cut-off of the fluid is arranged on the pipeline, and a pressure relief part is arranged on the pipeline between the valve and the second valve seat; preferably, the valve is a one-way stop valve, a two-way stop valve or a ball valve; the pressure relief portion includes the pressure release pipe and sets up the one-way stop valve on the pressure release pipe.
In order to facilitate installation of the second sealing structure, a first step is arranged on the pressing ring II, a second step is arranged on the valve seat II, and a space formed by the first step and the second step is used as a space for accommodating the second spring, namely one end of the second spring abuts against the step surface of the first step on the pressing ring II, and the other end of the second spring abuts against the step surface of the second step on the valve seat II.
Preferably, the pipeline further comprises channels which are respectively arranged on the inlet side and the outlet side of the ball body and are positioned on the valve body, one end of the channel A on the inlet side of the ball body is communicated with the medium channel, the other end of the channel A is communicated with the pipeline, and one end of the channel B on the outlet side of the ball body is connected with the second valve seat and the other end of the channel B is communicated with the pipeline.
In order to further improve the sealing effect, two sealing rings are further arranged between the second valve seat and the valve body, wherein one sealing ring A is positioned above the outlet of the pipeline, and the other sealing ring B is positioned below the outlet of the pipeline.
In order to further facilitate the discharge of slag in the cavity of the valve, the outer end face of the second pressing ring is an inclined plane, and a gap between the outer end face of the second pressing ring and the ball body can at least allow the slag in the cavity of the valve to be discharged.
Preferably, two sets of second sealing structures are symmetrically arranged along the outlet side of the ball.
Has the advantages that: the utility model discloses the sediment valve is not only the moment of torsion light, and is sealed effectual moreover. When in use, only the first valve seat at the inlet side of the ball body is tightly held with the ball body in the opening and closing process of the slag discharging valve, and the torque is very light; when the slag discharging valve needs to be sealed, the valve on the actuating mechanism and the pipeline is opened, the pressure relief part is closed, pressurized fluid in the medium channel sequentially enters the two end parts of the valve seat from the channel A, the pipeline and the channel B, reverse thrust (opposite to the medium flow direction in the medium channel) is formed, the valve seat is further pushed to the ball body, the inclined end surface of the valve seat is in close contact with the ball body to form sealing (the higher the medium pressure in the medium channel is, the better the sealing is), in the process, the ball body and the valve seat form bidirectional sealing (namely the valve seat achieves reverse self-sealing by means of the thrust of the medium fluid), the sealing effect is excellent, and the ball body can be prevented from moving upwards; when slag is required to be discharged, the lock hopper is decompressed through the decompression valve, the pressure of a fluid medium in the slag discharging valve is reduced, the second valve seat is pushed to the opposite direction of the ball body due to the reverse thrust of the spring to form separation, and a 5-10mm gap is formed between the second valve seat and the ball body.
Drawings
FIG. 1 is a schematic structural view of a prior art one-way sealing lock hopper slag discharge valve;
FIG. 2 is a schematic structural view of a prior art two-way sealing lock hopper slag discharge valve;
FIG. 3 is a view showing the structure of a lock hopper slag discharge valve of the gasification furnace in example 1 (actuator/slag discharge valve open state);
FIG. 4 is a second schematic view of the structure of the lock hopper slag discharge valve of the gasification furnace in example 1 (closed state of the actuator/slag discharge valve);
FIG. 5 is an enlarged view of portion A of FIG. 3;
FIG. 6 is an enlarged view of portion B of FIG. 3;
FIG. 7 is an enlarged view of portion C of FIG. 4;
FIG. 8 is a schematic view of part A of the structure of the lock hopper slag discharge valve of the gasification furnace in this embodiment 2.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the following description of the embodiments is only for the purpose of helping understanding the principle and the core idea of the present invention, and is not intended to limit the scope of the present invention. It should be noted that modifications to the present invention may occur to those skilled in the art without departing from the principles of the present invention and are intended to fall within the scope of the appended claims.
Example 1
A slag discharging valve, as shown in fig. 3 to 7, comprises a valve body 1, an actuating mechanism 3 (the actuating mechanism 3 of the present invention refers to a slag discharging valve switch assembly) arranged on the valve body 1, a valve seat, a ball 4 and a medium channel 8 arranged in the valve body 1, wherein the actuating mechanism 3 drives the ball 4 to rotate in the medium channel 8 to open and close a slag locking valve; a first sealing structure 5 is arranged on the inlet side of the ball 4, and a second sealing structure is arranged on the outlet side of the ball 4, and the second sealing structure realizes reverse self-sealing through the pressurized fluid introduced into the medium channel 8 on the inlet side of the ball 4. Specifically, the second seal structure includes: the second pressing ring 22 is fixedly connected to the valve body 1, the second valve seat 19 is matched with the ball body 4 and the second pressing ring 22, the second spring 18 is arranged between the second pressing ring 22 and the second valve seat 19, one end of the second spring 18 abuts against the second pressing ring 22, the other end of the second spring 18 abuts against the second valve seat 19, and when the second spring 18 is in a free state, the inclined end face 17 of the second valve seat 19 is separated from the ball body 4 and has a gap of 5-10mm for discharging slag in the cavity 2 in the valve; when the second valve seat 19 is acted by the pressurized fluid, the second valve seat 19 compresses the second spring 18 and moves along the direction of the medium channel 8 until the inclined end surface 17 of the second valve seat 19 is in close contact with the ball 4 to form a seal.
In this embodiment, the first sealing structure 5 further includes a pipeline 12, one end of the pipeline 12 is communicated with the medium passage 8 on the inlet side of the ball 4, the other end of the pipeline 12 is connected to the second valve seat 19, and the pressurized fluid 9 in the medium passage 8 on the inlet side of the ball 4 is led to the second valve seat 19 through the pipeline 12 to serve as an axial external force applied to the second valve seat 19, so as to drive the second valve seat 19 to move axially.
In the present embodiment, a valve 11 for controlling the introduction and cutoff of the pressurized fluid 9 is provided in the pipe 12, and a relief portion is provided in the pipe 12 between the valve 11 and the second valve seat 19.
In the present embodiment, the first step is provided on the second pressing ring 22, the second step is provided on the second valve seat 19, and a space surrounded by the first step and the second step serves as a space for accommodating the second spring 18.
In this embodiment, the pipeline 12 further includes channels respectively disposed on the inlet side of the ball 4 and the outlet side of the ball 4 and located on the valve body 1, the channel a10 on the inlet side of the ball 4 has one end connected to the medium channel 8 and the other end connected to the pipeline 12, and the channel B13 on the outlet side of the ball 4 has one end connected to the second valve seat 19 and the other end connected to the pipeline 12.
In this embodiment, two sealing rings are further disposed between the second valve seat 19 and the valve body 1, wherein one sealing ring a21 is located above the outlet of the pipeline 12, and the other sealing ring B20 is located below the outlet of the pipeline 12.
In this embodiment, the outer end surface 16 of the second pressing ring 22 is an inclined surface, and a gap between the outer end surface 16 of the second pressing ring 22 and the ball 4 at least allows slag in the cavity 2 of the valve to be discharged.
In the embodiment, the valve 11 is a one-way stop valve, a two-way stop valve or a ball valve; the pressure relief portion includes a pressure relief pipe 23 and a one-way cut-off valve 14 provided on the pressure relief pipe 23.
In this embodiment, two sets of sealing structures are symmetrically arranged on the outlet side of the ball 4, wherein one set of the second sealing structure adopts the second sealing structure, and the other set of the sealing structure adopts the sealing structure shown in fig. 5, which is different from the second sealing structure in that: the medium channel 8 on the inlet side of the ball 4 is not connected via the line 12.
Example 2
A residual discharge valve, as shown in reference to embodiment 1 and fig. 8, which is different from embodiment 1 in that: two sets of second sealing structures are symmetrically arranged along the ball 4, and the second valve seat 19 of each set of second sealing structure is respectively connected with the second valve seat 19 through a channel B13 at one end and is communicated with the pipeline 12 at the other end.
The utility model discloses the sediment valve is not only the moment of torsion light, and is sealed effectual moreover, can also clear away the granule type slag body that adheres at the valve lumen inner wall. When in use, only the valve seat I6 at the inlet side of the ball body 4 is tightly held with the ball body 4 in the opening and closing process of the slag discharging valve, and the torque is very light; when the slag discharging valve needs to be sealed, the valve 11 on the actuating mechanism 3 and the pipeline 12 is opened, the pressure relief part is closed, the pressurized fluid in the medium channel 8 sequentially enters the end part of the second valve seat 19 from the channel A10, the pipeline 12 and the channel B13, and forms reverse thrust opposite to the medium flow direction in the medium channel 8, so that the second valve seat 19 is pushed to the ball 4, the inclined end surface 17 of the second valve seat 19 is in tight contact with the ball 4 to form sealing, the higher the pressure of the medium 9 in the medium channel 8 is, the better the sealing is, in the process, the ball 4 and the valve seat form bidirectional sealing (namely the second valve seat realizes reverse self sealing by means of the thrust of the medium fluid), the sealing effect is excellent, and the ball 4 can be prevented from jumping upwards; when the slag is required to be discharged, the lock hopper is decompressed through the decompression valve, the pressure of a fluid medium 9 in the slag discharging valve is reduced at this time, the second valve seat 19 pushes the second valve seat 19 to the opposite direction of the ball 4 due to the reverse thrust of the spring 18 to form separation, the second valve seat 19 and the ball 4 form a 5-10mm gap, on one hand, slag can be rapidly discharged through the gap, and on the other hand, the torque increase of the valve 11 caused by a large amount of accumulated slag in the middle cavity 2 of the valve can be prevented.
Claims (10)
1. A slag discharging valve comprises a valve body (1), an actuating mechanism (3) arranged on the valve body (1), a valve seat, a ball body (4) and a medium channel (8) which are arranged in the valve body (1), wherein the ball body (4) is driven by the actuating mechanism (3) to rotate in the medium channel (8) to realize opening and closing of a slag locking valve; a first sealing structure (5) is arranged on the inlet side of the ball body (4), and a second sealing structure is arranged on the outlet side of the ball body (4); the self-sealing ball is characterized in that the second sealing structure realizes reverse self-sealing through pressurized fluid introduced into a medium channel (8) at the inlet side of the ball body (4).
2. The residual valve of claim 1, wherein the second sealing structure comprises: the ball valve comprises a second pressing ring (22) fixedly connected to the valve body (1), and a second valve seat (19) matched with the ball body (4) and the second pressing ring (22), wherein a second spring (18) is arranged between the second pressing ring (22) and the second valve seat (19), one end of the second spring (18) abuts against the second pressing ring (22), and the other end of the second spring (18) abuts against the second valve seat (19), and when the second spring (18) is in a free state, an inclined end surface (17) of the second valve seat (19) is separated from the ball body (4) and has a gap of 5-10mm for discharging slag materials in the valve middle cavity (2); when the second valve seat (19) is under the action of pressurized fluid, the second valve seat (19) compresses the second spring (18) and moves along the direction of the medium channel (8) until the inclined end face (17) of the second valve seat (19) is in close contact with the ball body (4) to form sealing.
3. The residual slag valve according to claim 2, characterized in that: the first sealing structure (5) further comprises a pipeline (12), one end of the pipeline (12) is communicated with the medium channel (8) on the inlet side of the ball body (4), the other end of the pipeline (12) is connected with the second valve seat (19), and pressurized fluid (9) in the medium channel (8) on the inlet side of the ball body (4) is led to the second valve seat (19) through the pipeline (12) to serve as axial external force applied to the second valve seat (19), so that the second valve seat (19) is driven to move axially.
4. The residual slag valve according to claim 3, characterized in that: a valve (11) for controlling the introduction and the cut-off of the fluid (9) with pressure is arranged on the pipeline (12), and a pressure relief part is arranged on the pipeline (12) between the valve (11) and the second valve seat (19).
5. The residual slag valve according to claim 2, 3 or 4, characterized in that: a first step is arranged on the pressing ring II (22), a second step is arranged on the valve seat II (19), and a space formed by the first step and the second step is used as a space for accommodating the spring II (18).
6. The residual slag valve according to claim 5, characterized in that: pipeline (12) still including setting up respectively in spheroid (4) inlet side, spheroid (4) outlet side and being located the passageway on valve body (1), passageway A (10) one end intercommunication medium passageway (8), other end intercommunication pipeline (12) of spheroid (4) inlet side, and valve seat two (19), other end intercommunication pipeline (12) are connected to passageway B (13) one end on spheroid (4) outlet side.
7. The residual slag valve according to claim 6, characterized in that: two sealing rings are further arranged between the second valve seat (19) and the valve body (1), wherein one sealing ring A (21) is located above the outlet of the pipeline (12), and the other sealing ring B (20) is located below the outlet of the pipeline (12).
8. The residual slag valve according to claim 7, characterized in that: the outer end face (16) of the second pressing ring (22) is an inclined face, and a gap between the outer end face (16) of the second pressing ring (22) and the ball body (4) can at least be used for discharging slag in the valve middle cavity (2).
9. The residual slag valve according to claim 8, characterized in that: two sets of the second sealing structures are symmetrically arranged along the ball body (4).
10. The residual slag valve according to claim 9, characterized in that: the valve (11) adopts a one-way stop valve, a two-way stop valve or a ball valve; the pressure relief part comprises a pressure relief pipe (23) and a one-way stop valve (14) arranged on the pressure relief pipe (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921298204.2U CN210397781U (en) | 2019-08-12 | 2019-08-12 | Slag discharge valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921298204.2U CN210397781U (en) | 2019-08-12 | 2019-08-12 | Slag discharge valve |
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| Publication Number | Publication Date |
|---|---|
| CN210397781U true CN210397781U (en) | 2020-04-24 |
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ID=70359505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921298204.2U Active CN210397781U (en) | 2019-08-12 | 2019-08-12 | Slag discharge valve |
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| CN (1) | CN210397781U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577929A (en) * | 2020-04-30 | 2020-08-25 | 方正阀门集团股份有限公司 | Ball valve with DBB and DIB functions exchanged |
| CN112161079A (en) * | 2020-09-28 | 2021-01-01 | 四川精控阀门制造有限公司 | Automatic grease injection plug valve |
| CN114658889A (en) * | 2020-12-22 | 2022-06-24 | 中国石油化工股份有限公司 | High-temperature ball valve series connection sealing structure and use method thereof |
-
2019
- 2019-08-12 CN CN201921298204.2U patent/CN210397781U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577929A (en) * | 2020-04-30 | 2020-08-25 | 方正阀门集团股份有限公司 | Ball valve with DBB and DIB functions exchanged |
| CN112161079A (en) * | 2020-09-28 | 2021-01-01 | 四川精控阀门制造有限公司 | Automatic grease injection plug valve |
| CN114658889A (en) * | 2020-12-22 | 2022-06-24 | 中国石油化工股份有限公司 | High-temperature ball valve series connection sealing structure and use method thereof |
| CN114658889B (en) * | 2020-12-22 | 2024-02-23 | 中国石油化工股份有限公司 | High-temperature ball valve serial sealing structure and use method thereof |
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