Hydraulic system for hydrogen-based shaft furnace

Abstract

The hydraulic system comprises a hydraulic pump station, a first energy accumulator valve station group, a second energy accumulator valve station group, a third energy accumulator valve station group, a fourth energy accumulator valve station group and a fifth energy accumulator valve station group, the first energy accumulator valve stand set, the second energy accumulator valve stand set, the third energy accumulator valve stand set, the fourth energy accumulator valve stand set and the fifth energy accumulator valve stand set correspondingly control a first area, a second area, a third area, a fourth area and a fifth area respectively. 57 valves are distributed in the first area, the second area, the third area, the fourth area and the fifth area in total. The optimized hydraulic system has the advantages that the flow of a pump station is large, the cleanliness of oil products ensures that equipment is powerful, pipelines between the control valve stand and the valves or the valve sets are short and concentrated, the field pipeline construction amount is small, and all the areas are independently repaired and maintained.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic systems, and in particular to a hydraulic system for a hydrogen-based vertical furnace. Background Art

[0002] The hydrogen-based vertical furnace is a new direction for the green development of the steel industry, and it is also the direction of change in the blast furnace ironmaking process. The hydrogen-based vertical furnace is a typical factory for the industrial production of direct reduction of iron with hydrogen-rich gas. Its main equipment is composed of various valves or valve groups driven by many hydraulic cylinders; and these valves or valve group equipment are distributed in an area with an elevation of 3 meters to 104 meters. Hydrogen-based direct reduction ironmaking is a process method for non-blast furnace ironmaking, and it is also the development direction of non-blast furnace ironmaking in China. The current promotion and commercial operation of hydrogen-based direct reduction ironmaking technology has started from the basics, so the hydrogen-based vertical furnace should also have its own unique hydraulic system. The function of this hydraulic system is to safely, accurately and efficiently control all kinds of valves or valve groups driven by hydraulic cylinders in the hydrogen-based vertical furnace area;

[0003] In the prior art, the hydraulic system of the original large blast furnace top is used, and the control circuit of the valve station is increased accordingly, which has the following disadvantages:

[0004] 1. The original pump station has two hydraulic pumps (one for use and one for backup) with a small flow rate. When multiple valves are working at the same time, the energy storage station also participates in the normal oil replenishment work; thus, when the power supply fails, the energy storage station may not be able to provide sufficient emergency hydraulic power source.

[0005] 2. The control valve station is centrally placed. Since the hydraulic equipment (valves or valve groups) controlled by the valve station are distributed in a dispersed area with an elevation of 3 meters to 104 meters, the pipelines from the control valve station to each valve or valve group are longer and more dispersed.

[0006] 3. The dispersion of hydraulic pipelines is not conducive to construction and maintenance.

[0007] 4. The centralized placement and manufacturing mode of the control valve station has a high cost, and each control circuit group is installed on the same oil inlet valve block, which is not conducive to the independent repair and maintenance of each circuit. Summary of the invention

[0008] Therefore, the object of the present invention is to provide a hydraulic system for a hydrogen-based vertical furnace, an optimized hydraulic system, with a large pump station flow, a powerful oil cleanliness assurance device, short and concentrated pipelines between the control valve table and each valve or valve group, a small amount of on-site pipeline construction and independent repair and maintenance of each area.

[0009] To solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions: A hydraulic system for a hydrogen-based vertical furnace, comprising: a hydraulic pump station, a No. 1 accumulator valve station group, a No. 2 accumulator valve station group, a No. 3 accumulator valve station group, a No. 4 accumulator valve station group, and a No. 5 accumulator valve station group;

[0010] The accumulator valve station group No. 1, the accumulator valve station group No. 2, the accumulator valve station group No. 3, the accumulator valve station group No. 4, and the accumulator valve station group No. 5 correspond to controlling the first area, the second area, the third area, the fourth area, and the fifth area respectively;

[0011] A total of 57 valves are distributed in the first area, the second area, the third area, the fourth area and the fifth area, and the accumulator valve station group No. 1, the accumulator valve station group No. 2, the accumulator valve station group No. 3, the accumulator valve station group No. 4 and the accumulator valve station group No. 5 respectively control the valves in the corresponding areas.

[0012] As a preferred solution of the hydraulic system for a hydrogen-based vertical furnace described in the present invention, 15 valve devices distributed in an area with an elevation of 3 meters to 15 meters are divided into a first area;

[0013] Among them, the corresponding numbers of the 15 valves are: PH146-L11, PH113-L11, PH111-L11, PH143-L11, PH140-L11; PH146-L12, PH113-L14, PH111-L14, PH143-L14, PH140-L14; PH239-L11, PH130-L11, PH239-L12, PH130-L12, PH138-L.

[0014] As a preferred solution of the hydraulic system for a hydrogen-based vertical furnace described in the present invention, the No. 1 accumulator valve station group is placed in an 8-meter platform area, and the pipelines from the outlet of the No. 1 accumulator valve station group to each valve equipment are within a 5-meter elevation range.

[0015] As a preferred solution of the hydraulic system for a hydrogen-based vertical furnace described in the present invention, five valve devices distributed in the area of ​​37 meters to 50 meters above sea level are divided into the second area;

[0016] Among them, the corresponding numbers of the 5 valves are: PH133-L1, PH133-L2, PH133-L3, PH134-L, and PH136-L.

[0017] As a preferred solution of the hydraulic system for a hydrogen-based vertical furnace described in the present invention, the No. 2 accumulator valve station group is placed in the 44-meter platform area, and the pipelines from the outlet of the No. 2 accumulator valve station group to each valve equipment are within the 6-meter elevation range.

[0018] As a preferred embodiment of the hydraulic system for a hydrogen-based vertical furnace described in the present invention, 10 valve devices distributed on the left side of the area at an elevation of 92 meters to 100 meters are divided into a third area;

[0019] Among them, the corresponding numbers of the 10 valves are: RE204-L11, RE182-L11, RE208-L11, RE205-L11, RE235-L11; RE204-L12, RE182-L12, RE208-L12, RE205-L12, RE235-L12.

[0020] As a preferred solution of the hydraulic system for a hydrogen-based vertical furnace described in the present invention, the No. 3 accumulator valve station group is placed in the 92-meter platform area, and the pipelines from the outlet of the No. 3 accumulator valve station group to each valve equipment are within an 8-meter elevation range.

[0021] As a preferred embodiment of the hydraulic system for a hydrogen-based vertical furnace described in the present invention, 10 valve devices distributed on the right side of the area at an elevation of 92 meters to 100 meters are divided into a fourth area;

[0022] Among them, the corresponding numbers of the 10 valves are: RE204-L13, RE182-L13, RE208-L13, RE205-L13, RE235-L13; RE204-L14, RE182-L14, RE208-L14, RE205-L14, RE235-L14.

[0023] As a preferred solution of the hydraulic system for a hydrogen-based vertical furnace described in the present invention, the No. 4 accumulator valve station group is placed in the 92-meter platform area, and the pipelines from the No. 4 accumulator valve station group outlet to each valve device are within the 8-meter elevation range;

[0024] The eight valve devices distributed on the right side of the area from 100m to 104m in elevation are divided into the fifth area;

[0025] Among them, the 8 valves are numbered as follows: RE201-L11, RE206-L11, RE201-L12, RE206-L12, RE201-L13, RE206-L13, RE201-L14, RE206-L14;

[0026] The No. 5 accumulator valve station group is placed in the 100-meter platform area, and the pipelines from the outlet of the No. 5 accumulator valve station group to each valve equipment are within the 4-meter elevation range.

[0027] As a preferred solution of the hydraulic system for a hydrogen-based vertical furnace described in the present invention, it further includes a valve body assembly, the valve body assembly includes a valve body, a liquid inlet opened at one end of the valve body, a first annular plate fixed at the position of the liquid inlet, a first hole opened on the surface of the first annular plate, a tapered pipe arranged on one side of the valve body, a step pipe connected to the tapered pipe, a second annular plate fixed on the outer side wall of the step pipe, and a second hole opened on the surface of the second annular plate;

[0028] The linked self-locking component includes a notch groove opened on the surface of the first annular plate, a rotating shaft arranged in the notch groove, an L-shaped hook connected to the rotating shaft, a pressing sheet connected to the rotating shaft, and a rectangular groove opened on the surface of the second annular plate.

[0029] Compared with the prior art, the advantages of the present invention are:

[0030] 1. The oil supply capacity of the pump station has been greatly improved. The original two hydraulic pumps (one in use and one in reserve) have been changed to three hydraulic pumps (two in use and one in reserve), and the flow rate has been doubled.

[0031] 2. The hardware equipment for improving the cleanliness of the hydraulic system oil has been enhanced, and the original hydraulic system single-barrel oil return filter and single-barrel circulation filter have been changed to double-barrel oil return filter and double-barrel circulation filter.

[0032] 3. The conventional original accumulator station is divided into five accumulator groups, which also improves the accumulator's oil replenishment capacity in the event of a momentary power failure.

[0033] 4. The centralized main valve station of the original 40 to 60 control loops is divided into 5 valve stations, and they are divided into 5 control areas according to the distribution of all valves or valve group equipment in the hydrogen-based vertical furnace.

[0034] 5. Five accumulator groups and five valve stations are matched to form five sets of accumulator valve station groups, which are used to control the valves or valve group equipment in each area of ​​the hydrogen-based vertical furnace.

[0035] 6. Through the set valve body assembly, the docking and locking of different pipes can be adapted without replacing the valve body, and the adaptable structure replaceable structural design further improves the applicability. Through the set linkage self-locking assembly, no additional operation is required. During the docking of the annular plate, the linkage is automatically pressed and locked. In this way, even if the bolts at the connection position are loose, the tapered pipe will not be detached, ensuring the stability of the connection and avoiding the problem of shaking at the connection due to loose bolts, and eventually falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in combination with the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0037] Figure 1 It is the principle diagram of the hydraulic pump station of the present invention;

[0038] Figure 2 It is the principle diagram of the No. 1 accumulator valve station group of the present invention;

[0039] Figure 3 It is the principle diagram of the No. 2 accumulator valve station group of the present invention;

[0040] Figure 4 It is the principle diagram of the No. 3 accumulator valve station group of the present invention;

[0041] Figure 5 It is the principle diagram of the No. 4 accumulator valve station group of the present invention;

[0042] Figure 6 It is the principle diagram of the No. 5 accumulator valve station group of the present invention;

[0043] Figure 7 It is the distribution diagram of the hydraulic valves of the hydrogen-based vertical furnace of the present invention;

[0044] Figure 8 is a structural diagram of the valve body assembly of the present invention;

[0045] Fig. 9 is a structural diagram of a tapered tube of the present invention;

[0046] Fig.10 It is a structural diagram of the linked self-locking assembly of the present invention.

[0047] In the figure: 11, valve body; 12, liquid inlet; 13, first annular plate; 14, first hole position; 15, tapered tube; 16, step tube; 17, second annular plate; 18, second hole position; 21, notch groove; 22, rotating shaft; 23, L-shaped hook; 24, pressing piece; 25, rectangular groove. DETAILED DESCRIPTION

[0048] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0049] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0050] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general scale, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional space dimensions of length, width and depth should be included.

[0051] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0052] The present invention provides a hydraulic system for a hydrogen-based vertical furnace, an optimized hydraulic system, a large pump station flow, a powerful oil cleanliness assurance device, short and concentrated pipelines between a control valve table and each valve or valve group, a small amount of on-site pipeline construction, and independent repair and maintenance of each area.

[0053] Figure 1-Figure 10 The figure shows the overall structure of a hydraulic system for a hydrogen-based vertical furnace according to an embodiment of the present invention. Figure 1-Figure 10 , the main structure of this implementation mode includes: hydraulic pump station, No. 1 accumulator valve station group, No. 2 accumulator valve station group, No. 3 accumulator valve station group, No. 4 accumulator valve station group, No. 5 accumulator valve station group;

[0054] The No. 1 accumulator valve station group, the No. 2 accumulator valve station group, the No. 3 accumulator valve station group, the No. 4 accumulator valve station group, and the No. 5 accumulator valve station group correspond to control the first area, the second area, the third area, the fourth area, and the fifth area respectively;

[0055] There are 57 valves distributed in the first, second, third, fourth and fifth areas. The No. 1 accumulator valve station group, the No. 2 accumulator valve station group, the No. 3 accumulator valve station group, the No. 4 accumulator valve station group and the No. 5 accumulator valve station group control the valves in the corresponding areas respectively.

[0056] Distribute the equipment Figure 7The 15 valve devices (PH146-L11, PH113-L11, PH111-L11, PH143-L11, PH140-L11; PH146-L12, PH113-L14, PH111-L14, PH143-L14, PH140-L14; PH239-L11, PH130-L11, PH239-L12, PH130-L12, PH138-L) in the area with a height of 3 to 15 meters are divided into the first area, which is controlled by the No. 1 accumulator valve station group. The control valve station (No. 1 accumulator valve station group) of this area is placed in the 8-meter platform area, so that the pipelines from the outlet of the No. 1 accumulator valve station group to each valve device are within the 5-meter elevation range.

[0057] Distribute the equipment Figure 7 The five valve devices (PH133-L1, PH133-L2, PH133-L3, PH134-L, PH136-L) in the area between 37m and 50m in elevation are divided into the second area, which is controlled by the No. 2 accumulator valve station group. The control valve station (No. 2 accumulator valve station group) in this area is placed in the 44m platform area, so that the pipelines from the No. 2 accumulator valve station group outlet to each valve device are within the 6m elevation range.

[0058] Distribute the equipment Figure 7 The 10 valve devices (RE204-L11, RE182-L11, RE208-L11, RE205-L11, RE235-L11; RE204-L12, RE182-L12, RE208-L12, RE205-L12, RE235-L12) on the left side of the area from 92 meters to 100 meters in the middle elevation are divided into the third area, which is controlled by the No. 3 accumulator valve station group. The control valve station (No. 3 accumulator valve station group) of this area is placed in the 92-meter platform area, so that the pipelines from the outlet of the No. 3 accumulator valve station group to each valve device are within the 8-meter elevation range.

[0059] Distribute the equipment Figure 7 The 10 valve devices (RE204-L13, RE182-L13, RE208-L13, RE205-L13, RE235-L13; RE204-L14, RE182-L14, RE208-L14, RE205-L14, RE235-L14) on the right side of the area from 92 meters to 100 meters in elevation are divided into the fourth area, which is controlled by the No. 4 accumulator valve station group. The control valve station (No. 4 accumulator valve station group) of this area is placed in the 92-meter platform area, so that the pipelines from the No. 4 accumulator valve station group outlet to each valve device are within the 8-meter elevation range.

[0060] Distribute the equipment Figure 7The 8 valve devices (RE201-L11, RE206-L11, RE201-L12, RE206-L12, RE201-L13, RE206-L13, RE201-L14, RE206-L14) on the right side of the area with a middle elevation of 100 meters to 104 meters are divided into the fifth area, which is controlled by the No. 5 accumulator valve station group. The control valve station (No. 5 accumulator valve station group) of this area is placed in the 100-meter platform area, so that the pipelines from the outlet of the No. 5 accumulator valve station group to each valve device are within the 4-meter elevation range.

[0061] In the specific use process, the hydraulic pump station, No. 1 accumulator valve station group, No. 2 accumulator valve station group, No. 3 accumulator valve station group, No. 4 accumulator valve station group, and No. 5 accumulator valve station group are combined with each other to realize the control of 57 valves from PH146-L11 to RE201-L14 in the hydrogen-based vertical furnace. In the hydraulic pump station, there are large-capacity double-barrel return oil filters, high-pollution resistance double-barrel circulation filters, and large-flow constant-pressure variable pumps. The pump station has many advantages of large flow (400L / min) and high cleanliness hardware guarantee equipment;

[0062] The accumulator valve station group is a clever organic division and recombination of the accumulator station and the control valve station in the conventional hydraulic system. It can well solve the shortcomings of the wide distribution of hydraulic actuators and the large amount of on-site pipeline construction and maintenance. The accumulator valve station group has both the oil replenishment and high-order ramp absorption functions of the accumulator station and the integrated device (valve station) function of controlling the hydraulic actuators (cylinders or motors, etc.). At the same time, it also effectively shortens the hydraulic pipeline between the control valve group (valve station) and the on-site actuators. According to the number of control circuits of the valve station, 2 to 4 100L bladder accumulators are selected. Each control valve is composed of three valves: DN10 electromagnetic reversing valve, DN10 hydraulic control check valve, and one-way throttle valve. It has many advantages such as free flow adjustment, pressure maintenance, and control reversing.

[0063] In summary, according to the composition structure of the hydrogen-based vertical furnace, the distribution status of the hydraulic drive equipment and the process action requirements, the above-mentioned hydraulic pump station plus the accumulator valve station group No. 1 to No. 5 is the optimal hydraulic system for the hydrogen-based vertical furnace.

[0064] Furthermore, by providing a valve body assembly, the butt locking of different pipelines can be adapted without replacing the valve body, and the adaptable structure replaceable structural design further improves applicability;

[0065] Specifically, it also includes a valve body assembly, which includes a valve body 11, a liquid inlet 12 opened at one end of the valve body 11, a first annular plate 13 fixed at the position of the liquid inlet 12, a first hole 14 opened on the surface of the first annular plate 13, a tapered tube 15 arranged on one side of the valve body 11, a step tube 16 connected to the tapered tube 15, a second annular plate 17 fixed on the outer side wall of the step tube 16, and a second hole 18 opened on the surface of the second annular plate 17;

[0066] During specific use, the first annular plate 13 and the second annular plate 17 are docked with each other, and the first hole 14 and the second hole 18 are made to correspond to each other, and a threaded rod is used to penetrate and lock them. At this time, the tapered tube 15 is inserted into the liquid inlet 12, so that the tapered tube 15 can be installed in place. The structural design of the step tube 16 is stepped, so it can be directly applicable to the installation and use of pipelines with different diameters, without replacing the corresponding valves, thereby improving the flexibility of use.

[0067] The linkage self-locking assembly is used to perform linkage locking on the connection without any operation to prevent loosening and falling off. Specifically, the linkage self-locking assembly includes a notch groove 21 provided on the surface of the first annular plate 13, a rotating shaft 22 arranged in the notch groove 21, an L-shaped hook 23 connected to the rotating shaft 22, a pressing sheet 24 connected to the rotating shaft 22, and a rectangular groove 25 provided on the surface of the second annular plate 17;

[0068] During specific use, during the process of the first annular plate 13 and the second annular plate 17 docking with each other, the second annular plate 17 presses the pressure plate 24 downward, and the pressure plate 24 drives the rotating shaft 22 to rotate during the downward movement. At this time, the rotating shaft 22 drives the L-shaped hook 23 to flip until the first annular plate 13 and the second annular plate 17 are completely fitted together, and the L-shaped hook 23 is completely fitted in the rectangular groove 25. In this way, the first annular plate 13 and the second annular plate 17 can be automatically locked together, and then the threaded rod is used to pass through the first hole 14 and the second hole 18, so as to completely avoid the problem of the joint falling off due to loose bolts at the connection.

[0069] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed by the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A hydraulic system for a hydrogen-based vertical furnace, characterized in that: include: Hydraulic pump station, No. 1 accumulator valve station group, No. 2 accumulator valve station group, No. 3 accumulator valve station group, No. 4 accumulator valve station group, No. 5 accumulator valve station group; The accumulator valve station group No. 1, the accumulator valve station group No. 2, the accumulator valve station group No. 3, the accumulator valve station group No. 4, and the accumulator valve station group No. 5 correspond to controlling the first area, the second area, the third area, the fourth area, and the fifth area respectively; There are 57 valves distributed in the first area, the second area, the third area, the fourth area and the fifth area, and the accumulator valve station group No. 1, the accumulator valve station group No. 2, the accumulator valve station group No. 3, the accumulator valve station group No. 4 and the accumulator valve station group No. 5 respectively control the valves in the corresponding areas.

2. A hydraulic system for a hydrogen-based vertical furnace according to claim 1, characterized in that: The 15 valve devices distributed in the area with elevations of 3 to 15 meters are divided into the first area; Among them, the corresponding numbers of the 15 valves are: PH146-L11, PH113-L11, PH111-L11, PH143-L11, PH140-L11; PH146-L12, PH113-L14, PH111-L14, PH143-L14, PH140-L14; PH239-L11, PH130-L11, PH239-L12, PH130-L12, PH138-L.

3. A hydraulic system for a hydrogen-based vertical furnace according to claim 2, characterized in that: The No. 1 accumulator valve station group is placed in the 8-meter platform area, and the pipelines from the outlet of the No. 1 accumulator valve station group to each valve equipment are within the 5-meter elevation range.

4. A hydraulic system for a hydrogen-based vertical furnace according to claim 3, characterized in that: The five valve devices distributed in the area between 37m and 50m above sea level are divided into the second area; Among them, the corresponding numbers of the 5 valves are: PH133-L1, PH133-L2, PH133-L3, PH134-L, and PH136-L.

5. A hydraulic system for a hydrogen-based vertical furnace according to claim 4, characterized in that: The No. 2 accumulator valve station group is placed in the 44-meter platform area, and the pipelines from the outlet of the No. 2 accumulator valve station group to each valve equipment are within the 6-meter elevation range.

6. A hydraulic system for a hydrogen-based vertical furnace according to claim 5, characterized in that: The 10 valve devices distributed on the left side of the area between 92m and 100m in elevation are divided into the third area; Among them, the corresponding numbers of the 10 valves are: RE204-L11, RE182-L11, RE208-L11, RE205-L11, RE235-L11; RE204-L12, RE182-L12, RE208-L12, RE205-L12, RE235-L12.

7. A hydraulic system for a hydrogen-based vertical furnace according to claim 6, characterized in that: The No. 3 accumulator valve station group is placed in the 92-meter platform area, and the pipelines from the outlet of the No. 3 accumulator valve station group to each valve equipment are within the 8-meter elevation range.

8. A hydraulic system for a hydrogen-based vertical furnace according to claim 7, characterized in that: The 10 valve devices distributed on the right side of the area between 92m and 100m in elevation are divided into the fourth area; Among them, the corresponding numbers of the 10 valves are: RE204-L13, RE182-L13, RE208-L13, RE205-L13, RE235-L13; RE204-L14, RE182-L14, RE208-L14, RE205-L14, RE235-L14.

9. A hydraulic system for a hydrogen-based vertical furnace according to claim 8, characterized in that: The No. 4 accumulator valve station group is placed in the 92-meter platform area, and the pipelines from the No. 4 accumulator valve station group outlet to each valve equipment are within the 8-meter elevation range; The eight valve devices distributed on the right side of the area from 100m to 104m in elevation are divided into the fifth area; Among them, the 8 valves are numbered as follows: RE201-L11, RE206-L11, RE201-L12, RE206-L12, RE201-L13, RE206-L13, RE201-L14, RE206-L14; The No. 5 accumulator valve station group is placed in the 100-meter platform area, and the pipelines from the outlet of the No. 5 accumulator valve station group to each valve equipment are within the 4-meter elevation range.

10. A hydraulic system for a hydrogen-based vertical furnace according to claim 9, characterized in that: Also includes: A valve body assembly, the valve body assembly comprising a valve body (11), a liquid inlet (12) provided at one end of the valve body (11), a first annular plate (13) fixed at the position of the liquid inlet (12), a first hole (14) provided on the surface of the first annular plate (13), a tapered tube (15) provided on one side of the valve body (11), a step tube (16) connected to the tapered tube (15), a second annular plate (17) fixed on the outer side wall of the step tube (16), and a second hole (18) provided on the surface of the second annular plate (17); A linkage self-locking component comprises a notch groove (21) provided on the surface of the first annular plate (13), a rotating shaft (22) arranged in the notch groove (21), an L-shaped hook (23) connected to the rotating shaft (22), a pressing sheet (24) connected to the rotating shaft (22), and a rectangular groove (25) provided on the surface of the second annular plate (17).

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