Durable ash lock structure
By adopting a high-temperature resistant stainless steel material and a gray lock structure with a hydraulic drive mechanism, the problems of internal leakage and weak movement of the gray lock valve are solved, and the long-term operation of the gray lock and the stable production of the gasifier are achieved.
Patent Information
- Application Number
- CN202422083255.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-08-27
AI Technical Summary
The valve leakage of the ash lock of the existing gasifier furnace and the hydraulic drive cylinder are weak, resulting in frequent maintenance, affecting the stable operation of the gasifier furnace, short service life and large system fluctuations.
It uses high-temperature resistant stainless steel valve seat, valve core and lower bushing, combined with hydraulic drive mechanism, and replaces the original ash lock pressure relief valve, extending service life and reducing maintenance frequency.
The long-term operation of the ash lock secondary pressure relief valve is realized, which avoids system fluctuations caused by internal leakage of the valve and frequent maintenance, and ensures the stable production of the gasifier.
Smart Images
Figure CN223178292U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gasifiers, in particular to a durable ash lock structure. Background Technique
[0002] During the operation of the gasifier, the ash lock needs to regularly discharge the ash and slag generated by the gasifier. The ash lock realizes the functions of ash receiving and ash discharging through charging and pressure relief. When the ash lock is depressurized, the secondary pressure relief valve DV3 of the ash lock is frequently opened and closed. During operation, internal leakage may occur in the DV3 valve, not only leaking the cooling water used to cool the steam in the ash lock expansion condenser to shorten the pressure relief time, resulting in difficult pressure relief of the ash lock, the grate cannot be started to pull ash normally, affecting the stable operation of the gasifier; but also causing the ash lock pressure not to rise when the ash lock is pressurized, unable to achieve balance with the gasifier pressure, and the ash and slag in the lower ash chamber cannot be discharged into the ash lock. Limited by the material of the ash lock pressure relief valve DV3 and the hydraulic drive oil cylinder not meeting the conditions for the stable operation of the gasifier, cracks appear on the sealing surfaces of the DV3 hydraulic valve head and valve seat, and the hydraulic cylinder drive actuator acts weakly, frequently causing the ash lock to fail to operate in a normal cycle, with a long processing time, affecting the gasifier operating conditions; the valve action failure rate is high, frequent maintenance is required, and the service life is short and many other influencing factors. This will lead to a reduction in the production of the gasifier or even a shutdown, causing a large fluctuation in the production system. Therefore, a durable ash lock structure is proposed here. Content of the Utility Model
[0003] Technical Problems to be Solved
[0004] The purpose of the utility model is to make up for the deficiencies of the prior art and provide a durable ash lock structure.
[0005] Technical Solution
[0006] To achieve the above purpose, the utility model provides the following technical solution: A durable ash lock structure, including a valve body, a valve core body is arranged inside the valve body, a valve core head is arranged on one side of the valve core body, a valve seat is arranged on one side of the valve core head, a dust-proof sleeve is arranged on one side of the valve core body, a lower bush is arranged on one side of the dust-proof sleeve, an upper shaft sleeve is arranged on the other side of the valve core body, a slip ring is sleeved outside the upper shaft sleeve, a valve rod is connected to the top of the upper shaft sleeve, a snap ring and a bottom pad are connected to the top end of the valve rod, a flat packing is filled in the space between the valve rod and the valve body above, a packing gland is arranged on the flat packing, a bracket is arranged on the top of the valve body, a stud is fixedly connected to the top of the valve body, a nut is threadedly connected to the stud, the valve body and the bracket are fixedly installed together through the cooperation of the stud and the nut, and a round pressing plate is arranged above the packing gland, and a wave actuator is installed on the top of the bracket.
[0007] Preferably, the valve seat is made of stainless steel 304, the valve core body and the lower bushing are made of stainless steel 316, and the valve body is made of high-temperature resistant 15CrMo strengthened material. In this utility model, the original ash lock pressure relief valve DV3 is replaced with the hydraulic drive mechanism of this device. Moreover, in this application, the valve seat 7 is made of stainless steel 304, the valve core body and the lower bushing are made of stainless steel 316, and the valve body is made of high-temperature resistant 15CrMo strengthened material, which extends the service life, reduces the maintenance frequency, realizes the long-term operation of the ash lock secondary pressure relief valve, avoids system fluctuations caused by unfavorable factors such as valve internal leakage and actuator failure, and ensures the stable operation of the production system.
[0008] Preferably, the valve core head is installed on the valve core body by screws.
[0009] Preferably, a retaining ring and a gasket are arranged on one side of the valve seat, and the retaining ring and the gasket are fixed on the valve seat by screw two.
[0010] Preferably, the valve rod is drivingly connected to the fluctuation actuator, and the fluctuation actuator is driven to move through the valve rod.
[0011] Preferably, the round pressing plate is fixed in the bracket by stud nuts.
[0012] Beneficial effects:
[0013] Compared with the prior art, this durable ash lock structure has the following beneficial effects:
[0014] In this utility model, the original ash lock pressure relief valve DV3 is replaced with the hydraulic drive mechanism of this device. Moreover, in this application, the valve seat is made of stainless steel 304, the valve core body and the lower bushing are made of stainless steel 316, and the valve body is made of high-temperature resistant 15CrMo strengthened material, which extends the service life, reduces the maintenance frequency, realizes the long-term operation of the ash lock secondary pressure relief valve, avoids system fluctuations caused by unfavorable factors such as valve internal leakage and actuator failure, and ensures the stable operation of the production system. Description of the drawings
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0016] Figure 1 It is a structural schematic diagram of the present utility model.
[0017] In the figure:
[0018] 1. Lower bushing; 2. Valve body; 3. Dust cover; 4. Spool body; 5. Screw; 6. Spool head; 7. Valve seat; 8. Second screw; 9. Retaining ring; 10. Gasket; 11. Upper bushing; 12. Slip ring; 13. Valve stem; 14. Snap ring; 15. Bottom gasket; 16. Flat packing; 17. Packing gland; 18. Round pressing plate; 19. Nut; 20. Stud; 21. Bracket; 22. Fluctuation actuator. Detailed implementation manners
[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0020] Please refer to Figure 1 As shown, the present invention provides a technical solution: a durable ash lock structure, including a valve body 2, a spool body 4 is arranged inside the valve body 2, a spool head 6 is arranged on one side of the spool body 4, a valve seat 7 is arranged on one side of the spool head 6, a dust cover 3 is arranged on one side of the spool body 4, a lower bushing 1 is arranged on one side of the dust cover 3, an upper bushing 11 is arranged on the other side of the spool body 4, a slip ring 12 is sleeved outside the upper bushing 11, a valve stem 13 is connected to the top of the upper bushing, a snap ring 14 and a bottom gasket 15 are connected to the top of the valve stem 13, a flat packing 16 is filled in the space between the valve stem 13 and the valve body 2 above, a packing gland 17 is arranged on the flat packing 16, a bracket 21 is arranged on the top of the valve body 2, a stud 20 is fixedly connected to the top of the valve body 2, a nut 19 is threadedly connected to the stud 20, the valve body 2 and the bracket 21 are fixedly installed together through the cooperation of the stud 20 and the nut 19, and a round pressing plate 18 is arranged above the packing gland 17, and a fluctuation actuator 22 is installed on the top of the bracket 21.
[0021] Please refer specifically to Figure 1 , the material of the valve seat 7 is made of stainless steel 304, the materials of the spool body 4 and the lower bushing 1 are made of stainless steel 316, the valve body 2 is made of high-temperature-resistant 15CrMo strengthened material. The present invention replaces the original ash lock pressure relief valve DV3 with the hydraulic drive mechanism of this device, and the material of the valve seat 7 in this application is made of stainless steel 304, the materials of the spool body 4 and the lower bushing 1 are made of stainless steel 316, and the valve body 2 is made of high-temperature-resistant 15CrMo strengthened material, which prolongs the service life, reduces the maintenance frequency, realizes the long-cycle operation of the ash lock secondary pressure relief valve, avoids system fluctuations caused by adverse factors such as valve internal leakage and actuator failure, and ensures the stable operation of the production system.
[0022] The valve core head 6 in this application is installed on the valve core body 4 through a screw 5. A retaining ring 9 and a gasket 10 are arranged on one side of the valve seat 7, and the retaining ring 9 and the gasket 10 are fixed on the valve seat 7 through a screw two 8. The valve stem 13 is drivingly connected to the fluctuation actuator 22, and the fluctuation actuator 22 is driven to move through the valve stem 13. The round pressing plate 18 is fixed in the bracket 21 through a stud 20 and a nut 19.
[0023] Working principle: The hydraulic drive mechanism of this device is used to replace the original ash lock pressure relief valve DV3 in this utility model. The material of the valve seat 7 in this application is made of stainless steel 304, the valve core body 4 and the lower bushing 1 are made of stainless steel 316, and the valve body 2 is made of a heat-resistant 15CrMo reinforced material, which extends the service life, reduces the maintenance frequency, realizes the long-term operation of the ash lock secondary pressure relief valve, avoids system fluctuations caused by adverse factors such as valve internal leakage and actuator failure, and ensures the stable operation of the production system.
[0024] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.
[0025] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A durable ash lock structure, comprising a valve body (2), characterized in that: Inside the valve body (2), a valve core body (4) is provided. On one side of the valve core body (4), a valve core head (6) is provided. On one side of the valve core head (6), a valve seat (7) is provided. On one side of the valve core body (4), a dust cover (3) is provided. On one side of the dust cover (3), a lower bushing (1) is provided. On the other side of the valve core body (4), an upper bushing (11) is provided. A slip ring (12) is sleeved outside the upper bushing (11). The top of the upper bushing (11) is connected to a valve stem (13). The top of the valve stem (13) is connected to a snap ring (14) and a bottom gasket (15). The space between the valve stem (13) and the valve body (2) above is filled with a flat packing (16). A packing gland (17) is provided on the flat packing (16). A bracket (21) is provided at the top of the valve body (2). A stud (20) is fixedly connected to the top of the valve body (2). A nut (19) is threadedly connected to the stud (20). The valve body (2) and the bracket (21) are fixedly installed together through the cooperation of the stud (20) and the nut (19). And a round pressing plate (18) is provided above the packing gland (17). A fluctuation actuator (22) is installed at the top of the bracket (21).
2. A durable ash lock structure according to claim 1, wherein: The valve seat (7) is made of stainless steel 304. The valve core body (4) and the lower bushing (1) are made of stainless steel 316. The valve body (2) is made of 15CrMo heat-resistant reinforced material.
3. A durable grey lock structure according to claim 1, characterized in that: The valve core head (6) is installed on the valve core body (4) by screws (5).
4. A durable ash lock structure according to claim 1, characterized in that: On one side of the valve seat (7), a retaining ring (9) and a gasket (10) are provided. The retaining ring (9) and the gasket (10) are fixed on the valve seat (7) by screw two (8).
5. A durable ash lock structure according to claim 1, characterized in that: The valve stem (13) is drivingly connected to the fluctuation actuator (22), and the fluctuation actuator (22) is driven to move by the valve stem (13).
6. A durable ash lock structure according to claim 1, characterized in that: The round pressing plate (18) is fixed in the bracket (21) by the stud (20) and the nut (19).