Combined valve

Abstract

The present invention discloses a combined valve. The disclosed combined valve includes a valve body, and at least one main passage is provided in the valve body. Each main passage is formed by connecting an internal passage, at least one external connection port, and at least one valve mounting hole. Among them, the external connection port and the valve mounting hole are located on the surface of the valve body, and all the external connection ports and valve mounting holes are distributed at different positions on the surface of the valve body. The shape inside each valve mounting hole matches the shape of the mounting part of the valve to be installed. The combined valve of the present invention reduces the system volume and is convenient for installation; moreover, it reduces the pipeline connection points, reduces the potential risk of leakage, and improves the working reliability.

Description

Technical Field

[0001] It relates to a valve for a cryogenic adiabatic gas cylinder, and realizes functions such as liquid filling, liquid discharging, gas return, economy, and pressurization of the cryogenic adiabatic gas cylinder. Background Art

[0002] In some complex working conditions or equipment, it is necessary to provide multiple inlets and outlets on the working equipment to support different functional circuits, and correspondingly, multiple different functional valves need to be installed.

[0003] For example, an on-vehicle LNG cryogenic adiabatic gas cylinder (hereinafter referred to as the gas cylinder) is used to store LNG vehicle fuel. To realize functions such as liquid filling, liquid discharging, gas using, and pressurization, five functional valves including a liquid inlet check valve, an overcurrent valve, a liquid discharge stop valve, a gas using stop valve, and an economy valve are installed; two pressure detection elements including a pressure gauge and a pressure sensor; and two safety elements including a main safety valve and a secondary safety valve. All the above valves and elements are connected to the three interfaces of liquid filling, liquid discharging, and gas return welded on the gas cylinder through threads. A liquid filling, liquid discharging, gas return, economy, etc. circuit is formed on the gas cylinder.

[0004] The above complex working conditions or equipment have the following problems: the pipeline system is large in volume and complex in structure. All valves are connected to the pipeline through threads or welding, with many processes and complex operations during assembly; the reliability of the pipeline system is poor, and there is a possibility of leakage in the connection between the pipeline and the valve. Summary of the Invention

[0005] Aiming at the defects or deficiencies of the prior art, the purpose of the present invention is to provide a combined valve.

[0006] To this end, the combined valve provided by the present invention includes a valve body. At least one main passage is provided in the valve body, and each main passage is formed by connecting an internal passage, at least one external connection port, and at least one valve mounting hole. Among them, the external connection port and the valve mounting hole are located on the surface of the valve body, and all the external connection ports and valve mounting holes are distributed at different positions on the surface of the valve body. The shape inside each valve mounting hole matches the shape of the mounting part of the valve to be installed;

[0007] The external connection ports on different main passages are independent of each other, or different main passages share one or more of the external connection ports, or among all the main passages, the external connection ports on some main passages are independent of each other, and some main passages share one or more of the external connection ports;

[0008] The valve mounting holes on each main passage are independent of each other, or different main passages share one or more of the valve mounting holes, or among all the main passages, the valve mounting holes on some main passages are independent of each other, and some main passages share one or more of the valve mounting holes;

[0009] The internal passages of different main passages are independent of each other, or different main passages share internal passages or local internal passages.

[0010] In a further embodiment, valves are installed in the valve mounting holes, and the valves are selected from safety valves, economic valve check valves, overcurrent valves, globe valves, and / or solenoid valves.

[0011] In a further embodiment, at least one instrument mounting hole is provided on at least one main passage, and the shape inside the instrument mounting hole matches the mounting part of the instrument to be installed or the shape of the signal line of the instrument. All external ports, valve mounting holes, and instrument mounting holes are located at different positions on the surface of the valve body;

[0012] The instrument mounting holes on each main passage are independent of each other, or different main passages share one or more instrument mounting holes, or the instrument mounting holes on some main passages are independent of each other and some main passages share one or more instrument mounting holes.

[0013] In a further embodiment, an instrument is installed in the instrument mounting hole, and the instrument is selected from a pressure sensor, a liquid level sensor, and / or a pressure gauge.

[0014] Preferably, the surface of the valve body is composed of two opposite main planes A and B and the side surfaces located between the two main planes; at least one external port on each main passage is provided on main plane A or B, and the remaining external ports are provided on main plane A, main plane B, and / or the side surface. The valve mounting holes are located on main plane A, main plane B, and / or the side surface; the instrument mounting holes are located on main plane A, main plane B, and / or the side surface.

[0015] Preferably, the valve body is a cylinder or an irregular cylinder with a partial cut; the side surface of the irregular cylinder is surrounded by an arc surface and a plane, and the valve mounting hole and / or the instrument mounting hole is located on the plane.

[0016] Preferably, the side surface of the irregular cylinder is surrounded by one arc surface and multiple planes.

[0017] Optionally, the main passage is formed by connecting at least one non-axial passage and at least one axial passage, wherein at least one non-axial passage has one end directly opened to the outside as an external port, a valve mounting hole, or an instrument mounting hole, and at least one axial passage has one end directly opened to the outside as an external port, a valve mounting hole, or an instrument mounting hole;

[0018] Alternatively, the main passage is formed by connecting a non-axial passage, an axial passage, and a process passage, where at least one end of at least one non-axial passage directly opens to the outside as an external connection port, a valve installation hole, or an instrument installation hole, at least one end of at least one axial passage directly opens to the outside as an external connection port, a valve installation hole, or an instrument installation hole, and the process passage is used to connect non-axial passages at different positions, axial passages at different positions, and non-axial passages and axial passages.

[0019] In a specific solution, a first passage, a second passage, a third passage, a fourth passage, a fifth passage, and a sixth passage are provided in the valve body; a first external connection port a and a first valve installation hole are provided on the first passage; a second external connection port b, a second valve installation hole A, a second valve installation hole B, and a third valve installation hole C are provided on the second passage; a third external connection port c and a third valve installation hole are provided on the third passage, and the third passage communicates with the second external connection port b; a fourth external connection port d, a fourth valve installation hole A, and a fourth valve installation hole B are provided on the fourth passage, and the fourth passage communicates with the third external connection port c; a fifth valve installation hole A, a fifth instrument installation hole A, and a fifth instrument installation hole B are provided on the fifth passage; the fifth passage communicates with the third external connection port c; a sixth valve installation hole and a sixth instrument installation hole are provided on the sixth passage, and the sixth passage communicates with the first external connection port a; the valve body is an irregular cylinder, and this irregular cylinder is obtained by locally cutting a cylinder multiple times, and the side surface of the irregular cylinder is surrounded by an arc surface and multiple flat surfaces; the first external connection port a, the second external connection port b, and the third external connection port c are located in the central area of the bottom surface of the irregular cylinder, and the three external connection ports are located at the three vertices of the same triangle; the remaining external connection ports, each valve installation hole, and each instrument installation hole are located on the arc surface or / and each flat surface.

[0020] Preferably, a partial passage of the fifth passage is higher than the third external connection port c; a partial passage of the sixth passage is higher than the first external connection port a.

[0021] Furthermore, a liquid inlet check valve is installed in the first valve installation hole; a solenoid valve is installed in the second valve installation hole A, a globe valve is installed in the second valve installation hole B, and an overcurrent valve is installed in the second valve installation hole C; an economy valve is installed in the third valve installation hole; a solenoid valve is installed in the fourth valve installation hole A, and a globe valve is installed in the fourth valve installation hole B; a main safety valve is installed in the fifth valve installation hole A, a pressure sensor is installed in the fifth instrument installation hole A, and a pressure gauge is installed in the fifth instrument installation hole B; a secondary safety valve is installed in the sixth valve installation hole, and a liquid level sensor is installed in the sixth instrument installation hole.

[0022] Furthermore, an installation hole is provided on the bottom surface of the irregular cylinder.

[0023] Beneficial effects:

[0024] (1) The combined valve of the present invention reduces the system volume and is convenient for installation; moreover, it reduces the pipeline connection points, reduces the potential risk of leakage, and improves the working reliability.

[0025] (2) The combined valve body of the present invention can especially be used as the combined valve of an LNG cryogenic insulated gas cylinder. On the one hand, the welding process during the installation of the gas cylinder is cancelled, and the combined valve is connected to the gas cylinder by bolts for installation; on the other hand, the length of the pipeline without heat insulation treatment in the four circuits of the gas cylinder is shortened, reducing the heat insulation loss of the gas cylinder; in addition, an electromagnetic valve is arranged beside the manual stop valve on the combined valve body to achieve dual control of manual and electric control for the liquid supply circuit and the liquid discharge circuit. Further, part of the main safety valve pipeline is higher than the c port, and part of the secondary safety valve pipeline is higher than the a port, so that there is always a gas cavity separating the safety valve from the cryogenic liquid, preventing the safety valve from being frozen. Description of the drawings

[0026] Figure 1 is a schematic structural diagram of the combined valve of the present invention;

[0027] Figure 2 is Figure 1 the working principle diagram of the combined valve;

[0028] Figure 3 is Figure 1 the side view of;

[0029] Figure 4 is the pipeline inside the valve body corresponding to the liquid filling circuit ( Figure 3 A - A section);

[0030] Figure 5 is the schematic diagram of the liquid filling circuit;

[0031] Figure 6 is the pipeline inside the valve body corresponding to the liquid discharge circuit ( Figure 3 B - B section, C - C section);

[0032] Figure 7 is the schematic diagram of the liquid discharge circuit;

[0033] Figure 8 is the pipeline inside the valve body corresponding to the economic valve circuit ( Figure 3 C - C section);

[0034] Figure 9 is the schematic diagram of the economic valve circuit;

[0035] Figure 10 is the pipeline inside the valve body corresponding to the pressurization circuit ( Figure 3 D - D section, A - A section);

[0036] Figure 11 is the schematic diagram of the pressurization circuit;

[0037] Figure 12 The pipelines inside the valve body corresponding to the sensor, safety valve and pressure gauge circuit ( Figure 3 section D-D);

[0038] Figure 13 Schematic diagram of the sensor, safety valve and pressure gauge circuit;

[0039] The meanings of the codes in the figure: 1: valve body; 2: pressure sensor; 3: main safety valve; 4: economy valve; 5: secondary safety valve; 6: inlet check valve; 7: overcurrent valve; 8: liquid supply stop valve; 9: liquid supply solenoid valve; 10: pressure gauge; 11: return air solenoid valve; 12: return air stop valve; a: liquid filling port; b: liquid outlet; c: return air port; d: pressurization circuit interface (connected to the pressurization circuit); e: mounting hole; 02: mounting hole for pressure sensor; 03: mounting hole for main safety valve; 04: mounting hole for economy valve; 04-1: outlet channel of economy valve; 04-2: inlet channel of economy valve; 05: mounting hole for secondary safety valve; 06: mounting hole for inlet check valve; 07: mounting hole for overcurrent valve; 08: mounting hole for liquid supply stop valve; 09: mounting hole for liquid supply solenoid valve; 010: mounting hole for pressure gauge; 011: mounting hole for return air solenoid valve; 012: mounting hole for return air stop valve; 013: mounting hole for liquid level sensor; 00: process channel. Specific embodiments

[0040] Unless otherwise specified, the terms of the present invention are understood according to the conventional understanding of those skilled in the art.

[0041] As used herein, the term "axial direction" refers to the direction perpendicular to the paper surface, and the "non-axial direction" refers to any direction other than the axial direction, including the radial direction perpendicular to the axial direction and other directions that form a non-90° angle with the axial direction, such as the vertical direction in the attached drawings; the positional relationship between non-axial directions can be intersecting or parallel.

[0042] As used herein, the terms of orientation, directionality and positional relationship such as "upper", "vertical", "higher than", "lower than", "above", "below", etc. refer to the corresponding directions, orientations and positional relationships shown in the attached drawings.

[0043] The core component of the combined valve of the present invention is the valve body used to realize the combination of multiple valves. The valve body is provided with at least one main passage, and each main passage is used to realize the corresponding different circuit functions (control function, fluid function), and some main passages can also be used to realize the monitoring function, such as liquid outlet, liquid filling, pressurization, return air, pressure monitoring, flow monitoring, etc. Correspondingly, each of its main passages can be understood as a liquid outlet circuit, a liquid filling circuit, a pressurization circuit, a return air circuit, a monitoring safety circuit, etc.

[0044] According to the functions to be achieved by each main passage, each main passage is formed by connecting an internal passage outside the valve body, a corresponding number of external connection ports, and valve mounting holes. Further, it also includes instrument mounting holes. The external connection ports are used to externally connect corresponding components, devices, or apparatuses. The shape inside the valve mounting holes matches the shape of the valve to be installed, and the shape inside the instrument mounting holes matches the shape of the instrument to be installed. In terms of external form, each external connection port and valve mounting hole are externally open and distributed on the surface of the valve body; according to the working needs, the number of external connection ports, valve mounting holes, and instrument mounting holes on each main passage is one or more;

[0045] Considering the independent or related functions between main passages and the limitation and effective utilization of the space inside the valve body: the external connection ports on different main passages are independent, or different main passages share one or more external connection ports, or the external connection ports on some main passages are independent and some main passages share one or more external connection ports; the valve mounting holes on each main passage are independent, or different main passages share one or more valve mounting holes, or the valve mounting holes on some main passages are independent and some main passages share one or more valve mounting holes; also, the internal passages of different main passages are independent, or different main passages share partial internal passages.

[0046] The shape of the valve body can be designed as a reasonable shape according to the actual working conditions. One design idea is that, according to the functions to be achieved and for the convenience of installation, two opposite main planes A and B that are convenient for external assembly are provided on the valve body. The side surface between the two main planes is for convenient operation and control. The external interfaces of each main passage can be set on the main plane (not excluding being set on the side surface), and the remaining valve mounting holes and instrument mounting holes are set on the side surface (not excluding being set on the main plane). For example, the valve body is a (flat) cylinder or an irregular deformed cylinder that has been cut multiple times in sequence.

[0047] In the actual solution, the main passages and the external connection ports and valve mounting holes thereon can be reasonably set according to the working requirements, with or without instrument mounting holes.

[0048] The following is a specific embodiment of the present invention. The combined valve in this embodiment is used to achieve functions such as liquid filling, liquid discharging, gas using, and pressurization on a vehicle-mounted LNG cryogenic insulated gas cylinder. Corresponding to this, there are five functional valves, namely an inlet check valve, a flow control valve, an outlet stop valve, a gas using stop valve, and an economizer valve; two pressure detection elements, namely a pressure gauge and a pressure sensor; and two safety elements, namely a main safety valve and a secondary safety valve.

[0049] As Figure 1 and 2 shown, the valve body 1 of this embodiment is an irregular cylinder that has been locally cut multiple times, and the two bottom surfaces of the cylinder are the main surfaces;

[0050] The main surface of the valve body is provided with a liquid filling port a, a liquid outlet b, a gas return port c, and 3 mounting holes e are provided on the main surface;

[0051] On the side circumference of the valve body, pressure sensor mounting holes 02, main safety valve mounting holes 03, economy valve mounting holes 04, secondary safety valve mounting holes 05, inlet check valve mounting holes 06, overcurrent valve mounting holes 07, liquid supply stop valve mounting holes 08, liquid supply solenoid valve mounting holes 09, pressure gauge mounting holes 010, gas return solenoid valve mounting holes 011 and gas return stop valve mounting holes 012 are provided at non-connecting positions; corresponding pressure sensors 2, main safety valves 3, economy valves 4, secondary safety valves 5, inlet check valves 6, overcurrent valves 7, liquid supply stop valves 8, liquid supply solenoid valves 9, pressure gauges 10, gas return solenoid valves 11 and gas return stop valves 12 are installed in each hole;

[0052] At the same time, a liquid level sensor mounting hole 013 and an external interface d of the supercharging circuit are also provided on the side. The liquid level sensor is installed in the gas cylinder, and the signal line thereon passes through the liquid level sensor mounting hole 013 and exits;

[0053] During use, the entire combined valve is fixed to the gas cylinder distributor by bolts through the mounting holes e, and the 3 external ports are respectively butted and sealed with the corresponding holes on the gas cylinder distributor;

[0054] The main passage inside the valve body of this embodiment and its working principle are explained as follows:

[0055] As Figure 4 and 5 shown are the structure and schematic diagram of the first passage in the valve body. This passage is mainly used to realize gas cylinder liquid filling, that is, the liquid filling circuit: it is composed of an axial passage A communicated with the liquid filling port a in the valve body and a radial passage A communicated with the inlet check valve mounting hole 06 on the side of the valve body. The corresponding inlet check valve 6 is installed in the inlet check valve mounting hole 06; the liquid filling port a is butted with the corresponding liquid filling pipeline in the gas cylinder; when filling liquid, the medium enters the gas cylinder through the 6 inlet check valve through the liquid filling port a to realize the function.

[0056] As Figure 6 and 7The figure shows the structural and schematic diagram of the second passage in the valve body. This passage is mainly used to achieve the liquid discharge from the gas cylinder, that is, the liquid discharge circuit: It consists of an axial passage B communicating with the liquid outlet b, a radial passage B communicating with the liquid supply solenoid valve installation hole 09, a radial passage C communicating with the liquid supply stop valve installation hole 08 and the axial passage B, a radial passage D communicating with the overcurrent valve installation hole 07 and the radial passage B, and a process passage connecting the radial passage B and C; the corresponding installation holes are equipped with a liquid supply stop valve 8, a liquid supply solenoid valve 9, and an overcurrent valve 7; the liquid outlet b is an interface for docking with the corresponding liquid discharge pipeline in the gas cylinder; when liquid discharge is required, manually open the liquid supply stop valve 8, and remotely control the on / off of the circuit through the liquid supply solenoid valve 9, with manual and electric dual control to improve safety. The overcurrent valve 7 is used to limit the liquid discharge flow rate. When the liquid discharge flow rate is too large, the overcurrent valve automatically closes to play a protective role; when discharging liquid, the liquid in the gas cylinder passes through the liquid outlet b, passes through the liquid supply stop valve 8, reaches the B-B section from the C-C section through the process passage, and then reaches the liquid-using component through the liquid supply solenoid valve 9 and the overcurrent valve 7.

[0057] Figure 8 And Figure 9 The figure shows the structural and schematic diagram of the third passage in the valve body. This passage is mainly an economy circuit, which consists of an axial passage B, an axial passage C communicating with the gas return port c, a radial economy valve outlet passage 04-1 communicating with the axial passage B and the economy valve installation hole 04, and a radial economy valve inlet passage 04-2 communicating with the axial passage C and the economy valve installation hole 04; an economy valve 4 is installed in the economy valve installation hole 04; the gas-phase medium at the gas return port c passes through the economy valve 4 and the axial passage B to reach the outlet end of the liquid outlet b.

[0058] Figure 10 And 11 The figure shows the structural and schematic diagram of the fourth passage in the valve body. This passage mainly completes the pressurization function, that is, the pressurization circuit, which consists of an axial passage C, a radial passage E communicating with the gas return stop valve installation hole 012 and the axial passage C, a radial passage F communicating with the gas return solenoid valve installation hole 011, a radial passage G communicating with the external interface d of the pressurization circuit and the radial passage F, and a process passage 00 connecting the radial passage E and the radial passage F. Among them, the radial passage E opens upward to the gas return port c, and the corresponding gas return stop valve 12 and gas return solenoid valve 11 are installed in the respective installation holes; the gas return port c is an interface for docking with the corresponding gas return pipeline in the gas cylinder. When the gas return circuit needs to work, first manually open the gas return stop valve 12, and then remotely control the on / off of the circuit through the gas return solenoid valve. The gas passes through the gas return port c, passes through the gas return stop valve 12, reaches the A-A section from the D-D section through the process passage, and reaches the pressurization circuit through the gas return solenoid valve 11.

[0059] Figure 12 And 13The figure shows the structure and principle schematic diagram of the fifth passage and the sixth passage in the valve body. The fifth passage is composed of an axial passage C, a radial passage H that communicates with the pressure gauge mounting hole 010 and the axial passage C, a vertical passage A that communicates with the main safety valve mounting hole 03 and the radial passage E, and a radial passage I that communicates with the vertical passage A and the pressure sensor mounting hole 02. The intersection point of the vertical passage A and the radial passage E is higher than the air return port c. A pressure gauge 10, a pressure sensor 2, and a main safety valve 3 are installed in each mounting hole.

[0060] The sixth passage is composed of an axial passage A, a radial passage J that communicates with the liquid level sensor mounting hole 013 and the axial passage A, and a vertical passage B that communicates with the radial passage J and the secondary safety valve mounting hole 05. The radial passage J is opened obliquely upward towards the liquid filling port a, and the intersection point of the radial passage J and the vertical passage B is higher than the liquid filling port a. A secondary safety valve 5 is installed in the secondary safety valve mounting hole 05, and a liquid level sensor is installed in the liquid level sensor mounting hole 013. The functions of the main safety valve and the secondary safety valve are respectively the two-stage pressure relief valves of the gas cylinder, preventing the pressure of the gas cylinder from rising and damaging the gas cylinder during long-term placement.

[0061] The above embodiments are only used to illustrate the present invention, rather than limiting the present invention. Those of ordinary skill in the relevant technical field can also make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention. The patent protection scope of the present invention shall be defined by the claims.

Claims

1. A combined valve, characterized in that, it includes a valve body, and at least one main passage is provided in the valve body, and the at least one main passage is a first passage, a second passage, a third passage, a fourth passage, a fifth passage and a sixth passage; a first external connection port a and a first valve mounting hole are provided on the first passage, and the first valve mounting hole is a liquid inlet check valve mounting hole; a second external connection port b, a second valve mounting hole A, a second valve mounting hole B, and a third valve mounting hole C are provided on the second passage; the second valve mounting hole A is a liquid supply solenoid valve mounting hole, the second valve mounting hole B is a liquid supply stop valve mounting hole, and the third valve mounting hole C is an overcurrent valve mounting hole; a third external connection port c and a third valve mounting hole are provided on the third passage, and the third passage is communicated with the second external connection port b; the third valve mounting hole is an economy valve mounting hole; a fourth external connection port d, a fourth valve mounting hole A for a return air stop valve mounting hole and a fourth valve mounting hole B for a return air solenoid valve mounting hole are provided on the fourth passage, and the fourth passage is communicated with the third external connection port c; the fourth valve mounting hole A is a return air stop valve mounting hole, and the fourth valve mounting hole B is a return air solenoid valve mounting hole; a fifth valve mounting hole A, a fifth instrument mounting hole A and a fifth instrument mounting hole B are provided on the fifth passage; the fifth passage is communicated with the third external connection port c; the fifth valve mounting hole A is a main safety valve mounting hole, the fifth instrument mounting hole is a pressure gauge mounting hole, and the fifth instrument mounting hole B is a pressure sensor mounting hole; the fifth passage is composed of an axial passage C, a radial passage H communicating with the pressure gauge mounting hole and the axial passage C, a vertical passage A communicating with the main safety valve mounting hole and the radial passage E, and a radial passage I communicating with the vertical passage A and the pressure sensor mounting hole, wherein the intersection point of the vertical passage A and the radial passage E is higher than the first external connection port c; a sixth valve mounting hole and a sixth instrument mounting hole are provided on the sixth passage; the sixth passage is communicated with the first external connection port a; the sixth valve mounting hole is a secondary safety valve mounting hole, and the sixth instrument mounting hole is a liquid level sensor mounting hole; the sixth passage is composed of an axial passage A, a radial passage J communicating with the liquid level sensor mounting hole and the axial passage A, and a vertical passage B communicating with the radial passage J and the secondary safety valve mounting hole, wherein the radial passage J is opened obliquely upward to the liquid filling port a and the intersection point of the radial passage J and the vertical passage B is higher than the first external connection port a; the valve body is an irregular cylinder, and the irregular cylinder is obtained by multiple local cuts of a cylinder, and the side surface of the irregular cylinder is surrounded by an arc surface and multiple planes; the first external connection port a, the second external connection port b, and the third external connection port c are located in the central area of the bottom surface of the irregular cylinder, and the three external connection ports are located at the three vertices of the same triangle; the remaining external connection ports, each valve mounting hole, and each instrument mounting hole are located on the arc surface or / and each plane; a liquid inlet check valve is installed in the first valve mounting hole; An electromagnetic valve is installed in the second valve mounting hole A, a globe valve is installed in the second valve mounting hole B, and an overcurrent valve is installed in the second valve mounting hole C; An economizer valve is installed in the third valve mounting hole; An electromagnetic valve is installed in the fourth valve mounting hole A, and a globe valve is installed in the fourth valve mounting hole B; A main safety valve is installed in the fifth valve mounting hole A, a pressure sensor is installed in the fifth instrument mounting hole A, and a pressure gauge is installed in the fifth instrument mounting hole B; A secondary safety valve is installed in the sixth valve mounting hole, and a liquid level sensor is installed in the sixth instrument mounting hole.

2. The combined valve according to claim 1, characterized in that the main passage is formed by connecting at least one non-axial passage and at least one axial passage, wherein at least one non-axial passage has one end directly opened to the outside as an external connection port, a valve mounting hole or an instrument mounting hole, and at least one axial passage has one end directly opened to the outside as an external connection port, a valve mounting hole or an instrument mounting hole; alternatively, the main passage is formed by connecting a non-axial passage, an axial passage and a process passage, wherein at least one non-axial passage has one end directly opened to the outside as an external connection port, a valve mounting hole or an instrument mounting hole, and at least one axial passage has one end directly opened to the outside as an external connection port, a valve mounting hole or an instrument mounting hole, and the process passage is used to connect non-axial passages at different positions, axial passages at different positions, and non-axial passages and axial passages.

3. The combined valve according to claim 1, characterized in that the bottom surface of the irregular cylinder is provided with a mounting hole.

Images