阅读说明：本技术 一种用于lf炉电极的升降液压装置 (Lifting hydraulic device for LF furnace electrode ) 是由 王占祥 杜波 李�瑞 李美强 张忠良 李振兴 吴家礼 于 2021-08-12 设计创作，主要内容包括：本发明涉及冶金生产技术领域,具体涉及一种用于LF炉电极的升降液压装置,塞油缸A、塞油缸B、塞油缸C分别对应连接相比例阀A、相比例阀B、相比例阀C,相比例A和相比例C外侧的任意位置并列设置相比例阀D和手动换向阀；本发明在生产时,将故障的相比例阀A、相比例阀B、相比例阀C的其中之一电极,随时切换至备用阀组,实现单元元器件故障设备不等待不停机,实现完全断电的紧急情况下,手动提升和下降。(The invention relates to the technical field of metallurgical production, in particular to a lifting hydraulic device for an LF furnace electrode, wherein a plug oil cylinder A, a plug oil cylinder B and a plug oil cylinder C are respectively and correspondingly connected with a phase proportion valve A, a phase proportion valve B and a phase proportion valve C, and a phase proportion valve D and a manual reversing valve are arranged in parallel at any positions outside the phase proportion valve A and the phase proportion valve C; when the emergency valve is produced, one electrode of the failed comparative valve A, the comparative valve B and the comparative valve C is switched to the standby valve group at any time, so that the unit component failure equipment is not waited to be stopped, and manual lifting and descending are realized under the emergency condition of complete power failure.)

1. A lift hydraulic means for LF stove electrode which characterized in that includes: the plug oil cylinder A (1), the plug oil cylinder B (2) and the plug oil cylinder C (3) are respectively correspondingly connected with a phase proportion valve A (8), a phase proportion valve B (9) and a phase proportion valve C (10), and a phase proportion valve D (4) and a manual reversing valve (7) are arranged in parallel at any positions outside the phase proportion valve A (8) and the phase proportion valve C (10).

2. The lifting hydraulic device for the LF furnace electrode as claimed in claim 1, wherein: the phase proportion valve D (4) is respectively communicated with the high-pressure ball valve A (17), the high-pressure ball valve B (18) and the high-pressure ball valve C (19) through the high-pressure ball valve D (5).

3. The lifting hydraulic device for the LF furnace electrode as claimed in claim 1, wherein: the plug oil cylinder A (1), the plug oil cylinder B (2) and the plug oil cylinder C (3) are respectively and correspondingly connected with the phase proportional valve A (8), the phase proportional valve B (9) and the phase proportional valve C (10) through a high-pressure ball valve a (20), a high-pressure ball valve B (21) and a high-pressure ball valve C (22).

4. The lifting hydraulic device for the LF furnace electrode as claimed in claim 1, wherein:

the phase proportional valve A (8), the phase proportional valve B (9) and the phase proportional valve C (10) are respectively connected with a manual reversing valve (7).

5. The lifting hydraulic device for the LF furnace electrode as claimed in claim 1, wherein: the main pressure reducing valve (6) is connected with a phase proportional valve D (4), a phase proportional valve A (8), a phase proportional valve B (9) and a phase proportional valve C (10) respectively.

6. The lifting hydraulic device for the LF furnace electrode as claimed in claim 1, wherein:

the phase proportional valve A (8), the phase proportional valve B (9) and the phase proportional valve C (10) are connected with the phase proportional valve D (4) through an auxiliary reducing valve A (14), an auxiliary reducing valve B (15) and an auxiliary reducing valve C (16), respectively.

7. The lifting hydraulic device for the LF furnace electrode as claimed in claim 1, wherein: the phase proportional valve A (8) is connected with a high-pressure ball valve A (17) and a high-pressure ball valve a (20) through a right-angle one-way valve A (11).

8. The lifting hydraulic device for the LF furnace electrode as claimed in claim 1, wherein: the phase proportional valve B (9) is connected with a high-pressure ball valve B (18) and a high-pressure ball valve B (21) through a right-angle one-way valve B (12).

9. The lifting hydraulic device for the LF furnace electrode as claimed in claim 1, wherein: the phase proportional valve C (10) is connected with a high-pressure ball valve C (19) and a high-pressure ball valve C (22) through a right-angle one-way valve C (13).

Technical Field

The invention relates to the technical field of metallurgical production, in particular to a lifting hydraulic device for an LF furnace electrode.

Background

The LF furnace is a refining furnace in a steel plant, and when the LF furnace is produced in the steel plant, the phenomenon that a certain electrode of the LF furnace does not act or acts in a failure mode can occur, so that the whole smelting rhythm is disturbed, the fault is difficult to detect and judge, the online maintenance operation is long in time consumption, and the smelting efficiency is seriously influenced; the original LF furnace electrode lifting hydraulic device only has A, B, C three groups of control units, and once one of the control units has no action or action failure, the whole smelting process is interrupted, and the problems of maintenance, production cost and the like are increased.

Disclosure of Invention

The invention aims to solve the problem that the single-phase electrode hydraulic component needs to be stopped for maintenance after a fault, solve the problem that the hydraulic component cannot be maintained on line, prevent the occurrence of the accident that the electrode equipment cannot be lifted due to hydraulic power failure, and save a large amount of stopping maintenance time.

In order to achieve the purpose, the invention provides the following technical scheme:

a lift hydraulic means for LF stove electrode includes: the plug oil cylinder A (1), the plug oil cylinder B (2) and the plug oil cylinder C (3) are respectively correspondingly connected with a phase proportion valve A (8), a phase proportion valve B (9) and a phase proportion valve C (10), and a phase proportion valve D (4) and a manual reversing valve (7) are arranged in parallel at any positions outside the phase proportion valve A (8) and the phase proportion valve C (10).

The technical scheme of the invention is further improved as follows: the phase proportion valve D (4) is respectively communicated with the high-pressure ball valve A (17), the high-pressure ball valve B (18) and the high-pressure ball valve C (19) through the high-pressure ball valve D (5).

The technical scheme of the invention is further improved as follows: the plug oil cylinder A (1), the plug oil cylinder B (2) and the plug oil cylinder C (3) are respectively and correspondingly connected with the phase proportional valve A (8), the phase proportional valve B (9) and the phase proportional valve C (10) through a high-pressure ball valve a (20), a high-pressure ball valve B (21) and a high-pressure ball valve C (22).

The technical scheme of the invention is further improved as follows: the phase proportional valve A (8), the phase proportional valve B (9) and the phase proportional valve C (10) are respectively connected with a manual reversing valve (7).

The technical scheme of the invention is further improved as follows: the main pressure reducing valve (6) is connected with a phase proportional valve D (4), a phase proportional valve A (8), a phase proportional valve B (9) and a phase proportional valve C (10) respectively.

The technical scheme of the invention is further improved as follows: the phase proportional valve A (8), the phase proportional valve B (9) and the phase proportional valve C (10) are connected with the phase proportional valve D (4) through an auxiliary reducing valve A (14), an auxiliary reducing valve B (15) and an auxiliary reducing valve C (16), respectively.

The technical scheme of the invention is further improved as follows: the phase proportional valve A (8) is connected with a high-pressure ball valve A (17) and a high-pressure ball valve a (20) through a right-angle one-way valve A (11).

The technical scheme of the invention is further improved as follows: the phase proportional valve B (9) is connected with a high-pressure ball valve B (18) and a high-pressure ball valve B (21) through a right-angle one-way valve B (12).

The technical scheme of the invention is further improved as follows: the phase proportional valve C (10) is connected with a high-pressure ball valve C (19) and a high-pressure ball valve C (22) through a right-angle one-way valve C (13).

Compared with the prior art, the lifting hydraulic device for the LF furnace electrode has the beneficial effects that:

1. the invention provides a lifting hydraulic device for an LF furnace electrode, which can switch one electrode of a failed comparative valve A, a comparative valve B and a comparative valve C to a standby valve group at any time during production, realize that unit component failure equipment does not wait for non-stop, and realize manual lifting and descending under the emergency condition of complete power failure.

2. The invention provides a lifting hydraulic device for an LF furnace electrode, which solves the problems that a single-phase electrode hydraulic component needs to be stopped for maintenance after a fault, and the hydraulic component cannot be maintained on line, prevents the occurrence of an accident that the electrode equipment cannot be lifted due to hydraulic power failure, and saves a large amount of stopping maintenance time.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a lifting hydraulic device for an LF furnace electrode provided in the invention.

The labels in the figure are: 1-plugging an oil cylinder A; 2-plugging an oil cylinder B; 3-plugging an oil cylinder C; 4-phase proportional valve D; 5-high pressure ball valve D; 6-primary pressure relief valve; 7-a manual reversing valve; 8-phase proportional valve a; 9-phase proportional valve B; 10-phase proportional valve C; 11-right angle check valve a; 12-right angle check valve B; 13-right angle check valve C; 14-auxiliary pressure reducing valve a; 15-auxiliary pressure reducing valve B; 16-auxiliary pressure reducing valve C; 17-high pressure ball valve a; 18-high pressure ball valve B; 19-high pressure ball valve C; 20-high pressure ball valve a; 21-high pressure ball valve b; 22-high pressure ball valve c.

Detailed Description

The technical solution of the present invention will be clearly and completely described by the following detailed description. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, in the lifting hydraulic device for the LF furnace electrode of the present embodiment, a plug cylinder a (1), a plug cylinder B (2), and a plug cylinder C (3) are respectively and correspondingly connected with a phase proportional valve a (8), a comparative valve B (9), and a comparative valve C (10), and a phase proportional valve D (4) and a manual directional valve (7) are arranged in parallel at any position outside the comparative valve a (8) and the comparative valve C (10); a manual reversing valve (7) is arranged on the left outer side of the comparative example A (8) in parallel. A phase proportional valve D (4) is arranged at the right outer side of the phase comparison example C (10); in the embodiment, one electrode of a failed phase proportion valve A (8), a failed phase proportion valve B (9) and a failed phase proportion valve C (10) is switched to a standby valve bank at any time, so that unit component failure equipment is not waited to be shut down, and manual lifting and descending are realized under the emergency condition of complete power failure; the problem of single-phase electrode hydraulic pressure components and parts must be shut down to maintain after the trouble, unable online maintenance hydraulic pressure components and parts's problem is solved, prevent that hydraulic pressure outage from causing the emergence that can't promote electrode equipment accident, practice thrift a large amount of maintenance down times.

Further, the phase proportion valve D (4) is respectively communicated with a high-pressure ball valve A (17), a high-pressure ball valve B (18) and a high-pressure ball valve C (19) through a high-pressure ball valve D (5); the phase proportional valve A (8) is connected with a high-pressure ball valve A (17) and a high-pressure ball valve a (20) through a right-angle one-way valve A (11); the phase proportional valve B (9) is connected with a high-pressure ball valve B (18) and a high-pressure ball valve B (21) through a right-angle one-way valve B (12); the phase proportion valve C (10) is connected with a high-pressure ball valve C (19) and a high-pressure ball valve C (22) through a right-angle one-way valve C (13); in the embodiment, by adding the phase proportion valve D (4), the pipelines which are mutually controlled and exported by the high-pressure ball valve A (17), the high-pressure ball valve B (18) and the high-pressure ball valve C (19) form a parallel tee joint, and the high-pressure ball valves are arranged in front of the tee joint, so that the switching of oil ways is realized.

Further, the plug oil cylinder A (1), the plug oil cylinder B (2) and the plug oil cylinder C (3) are correspondingly connected with the phase proportional valve A (8), the phase proportional valve B (9) and the phase proportional valve C (10) through a high-pressure ball valve a (20), a high-pressure ball valve B (21) and a high-pressure ball valve C (22) respectively; the phase proportion valve A (8), the phase proportion valve B (9) and the phase proportion valve C (10) are respectively connected with a manual reversing valve (7); in the embodiment, a parallel manual reversing valve (7) is added to form communication with a phase control outlet main pipeline of a phase proportional valve A (8), a phase proportional valve B (9) and a phase proportional valve C (10), so that the integral lifting or descending of a three-phase electrode is realized, the complete power failure of a hydraulic system of an online device in the smelting process is ensured, and the online device can be manually and emergently operated; the phase control outlet pipeline of the phase control valve A (8), the phase control outlet pipeline of the phase control valve B (9) and the phase control outlet pipeline of the phase control valve C (10) are communicated with the main pressure oil pipeline, and the middle of the phase control outlet pipeline is respectively provided with a high-pressure ball valve a (20), a high-pressure ball valve B (21) and a high-pressure ball valve C (22), so that the lifting and the descending of a single electrode are manually controlled.

Preferably, the main pressure reducing valve (6) is connected to a phase proportional valve D (4), a phase proportional valve a (8), a phase proportional valve B (9), and a phase proportional valve C (10), respectively.

Preferably, the phase proportional valve a (8), the phase proportional valve B (9), and the phase proportional valve C (10) are connected to the phase proportional valve D (4) through an auxiliary pressure reducing valve a (14), an auxiliary pressure reducing valve B (15), and an auxiliary pressure reducing valve C (16), respectively.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the appended claims.