Electric control valve

Abstract

The utility model belongs to the technical field of electric control valves, and discloses an electric control valve which comprises a high-strength aluminum alloy valve body, a valve element is arranged in the high-strength aluminum alloy valve body, the valve element is connected with a valve rod, the valve rod is connected with an electric actuating mechanism, a heat absorption assembly is arranged on the valve rod, and the heat absorption assembly is connected with the electric actuating mechanism. A heat insulation protection assembly is arranged on the outer side of the high-strength aluminum alloy valve body, the two ends of the high-strength aluminum alloy valve body are fixedly connected with connecting flanges through pipelines respectively, and a heat absorption assembly can absorb heat on a valve rod to reduce the heat of fluid transmitted to an electric actuating mechanism through the valve rod, so that heating of the electric actuating mechanism is reduced, and the service life of the electric actuating mechanism is prolonged. And the heat insulation protection assembly reduces a large amount of heat transferred to the outside air from the position of the high-strength aluminum alloy valve body, the influence of the high-temperature environment on some peripheral equipment is avoided, workers can be prevented from being scalded by making contact with the high-strength aluminum alloy valve body, and use of the electric control valve is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric regulating valves, in particular to an electric regulating valve. Background Art

[0002] Electric control valve is an important equipment in the field of industrial automation process control. It consists of two parts: electric actuator and control valve. Its working principle is to receive electrical signals from the control system to drive the electric actuator, thereby changing the opening of the control valve to achieve precise regulation of medium flow, pressure, temperature and other parameters.

[0003] A Chinese patent with application number 202321015121.4 discloses an electric regulating valve, including a valve body, which is a hollow cubic structure with openings on both sides. A valve cover with a tubular structure is vertically installed on the upper surface of the valve body, a valve core is inserted into the interior of the valve cover, one end of the valve core extends into the interior of the valve body, and the other end of the valve core extends out of the interior of the valve body and is provided with an electric actuator. A lubrication cavity with an annular structure is opened on the inner side of the valve cover, a packing layer surrounding the valve core is provided on the lower surface of the lubrication cavity, an oil filling pipe is inserted into the interior of the lubrication cavity, one end of the oil filling pipe extends out of the interior of the valve cover and is provided with an oil supply mechanism, and a one-way valve located outside the valve cover is installed on the outer side of the oil filling pipe. It can be achieved that a protective layer can be formed on the exposed surface of the valve core with lubricating grease to resist the rust caused by external moisture and air, and the maintenance frequency can be reduced to reduce the maintenance cost of the valve core in the electric regulating valve.

[0004] However, the above electric regulating valve has the following problems in actual use: when the electric regulating valve is used to transport high-temperature fluid, heat will be transferred to the electric actuator, thereby affecting the use of the electric actuator.

[0005] Therefore, an electric regulating valve is proposed to solve the above problems. Utility Model Content

[0006] In order to solve the problems raised in the above background technology, the utility model provides an electric regulating valve, which has the advantages of reducing heat transfer to the outside when conveying high-temperature fluid, which is beneficial to the use of the electric regulating valve.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electric regulating valve, comprising a high-strength aluminum alloy valve body, a valve core is arranged in the high-strength aluminum alloy valve body, the valve core is connected to a valve stem, the valve stem is connected to an electric actuator, a heat absorption component is arranged on the valve stem, and a heat insulation protection component is arranged on the outer side of the high-strength aluminum alloy valve body.

[0008] Preferably, both ends of the high-strength aluminum alloy valve body are fixedly connected with connecting flanges through pipelines.

[0009] Preferably, the heat absorption component comprises a protective tube, a heat-conducting lining plate is fixedly connected to the inner side of the protective tube, and a cold water chamber is provided between the heat-conducting lining plate and the protective tube.

[0010] Preferably, a primary water inlet pipe is connected to a position near the bottom on one side of the protection tube, and a primary water outlet pipe is connected to a position near the top on the other side of the protection tube, and both the primary water inlet pipe and the primary water outlet pipe are connected to the cold water chamber.

[0011] Preferably, the top and the bottom of the protection tube are respectively fixedly connected with a fixing ring, the inner wall of the fixing ring is provided with a sealing ring, and the inner wall of the sealing ring is in close contact with the valve stem.

[0012] Preferably, the thermal insulation protection assembly includes a protective shell, a thermal insulation lining plate is provided in the protective shell, the thermal insulation lining plate is coated on the outer side of the high-strength aluminum alloy valve body, and a water storage chamber is provided between the thermal insulation lining plate and the protective shell.

[0013] Preferably, a secondary water inlet pipe is connected to a position near the bottom on one side of the protective shell, and a secondary water outlet pipe is connected to a position near the top on the other side of the protective shell, and the secondary water inlet pipe and the secondary water outlet pipe are both connected to the water storage chamber.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. The utility model can absorb the heat on the valve stem by setting a heat absorption component, so as to reduce the heat of the fluid transferred to the electric actuator through the valve stem, thereby reducing the heating of the electric actuator, which is beneficial to the use of the electric actuator;

[0016] 2. The utility model provides a heat insulation protection component to reduce the large amount of heat transferred from the high-strength aluminum alloy valve body to the outside air, avoid the impact of high-temperature environment on some peripheral equipment, and also avoid workers from contacting the high-strength aluminum alloy valve body and getting burned, which is beneficial to the use of the electric control valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic structural diagram of the heat insulation protection assembly of the utility model from another angle;

[0019] Figure 3 This is a structural schematic diagram of the valve stem and valve core of the utility model;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the protective housing of the utility model;

[0021] Figure 5The utility model is a schematic diagram of the cross-sectional structure of the protective tube.

[0022] In the figure: 1. High-strength aluminum alloy valve body; 2. Valve core; 3. Valve stem; 4. Electric actuator;

[0023] 5. Heat absorption component; 51. Protection tube; 52. Heat-conducting lining plate; 53. Cold water cavity; 54. Primary water inlet pipe; 55. Primary water outlet pipe;

[0024] 6. Thermal insulation protection assembly; 61. Protective shell; 62. Thermal insulation lining board; 63. Water storage cavity; 64. Secondary water inlet pipe; 65. Secondary water outlet pipe;

[0025] 7. Connecting flange; 8. Fixing ring; 9. Sealing ring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] like Figures 1 to 5 As shown, the utility model provides an electric regulating valve, including a high-strength aluminum alloy valve body 1, the high-strength aluminum alloy refers to an aluminum alloy whose tensile strength is greater than 480MPa, mainly Al-Cu-Mg and Al-Zn-Mg-Cu based alloys, i.e. 2XXX (hard aluminum alloy type) and 7XXX (super-hard aluminum alloy type) series alloys, a valve core 2 is provided in the high-strength aluminum alloy valve body 1, the valve core 2 is connected to a valve stem 3, the valve stem 3 is connected to an electric actuator 4, the electric actuator 4 is an existing public technology and is not described in detail here, a heat absorption component 5 is provided on the valve stem 3, and a heat insulation protection component 6 is provided on the outer side of the high-strength aluminum alloy valve body 1.

[0028] Specifically, two ends of the high-strength aluminum alloy valve body 1 are respectively fixedly connected with connecting flanges 7 through pipelines.

[0029] Furthermore, the heat absorption component 5 includes a protective tube 51, and a heat-conducting lining plate 52 is fixedly connected to the inner side of the protective tube 51. A cold water chamber 53 is provided between the heat-conducting lining plate 52 and the protective tube 51, which can absorb the heat on the valve stem 3 to reduce the heat of the fluid transferred to the electric actuator 4 through the valve stem 3, thereby reducing the heat of the electric actuator 4, which is beneficial to the use of the electric actuator 4.

[0030] Furthermore, a first-level water inlet pipe 54 is connected to a position near the bottom on one side of the protective tube 51, and a first-level water outlet pipe 55 is connected to a position near the top on the other side of the protective tube 51. The first-level water inlet pipe 54 and the first-level water outlet pipe 55 are both connected to the cold water chamber 53. The first-level water inlet pipe 54 is connected to an external water source to inject cold water into the cold water chamber 53.

[0031] It is worth noting that the top and the bottom of the protection tube 51 are respectively fixedly connected with a fixing ring 8 , and the inner wall of the fixing ring 8 is provided with a sealing ring 9 , and the inner wall of the sealing ring 9 is tightly attached to the valve stem 3 .

[0032] It is worth noting that the thermal insulation protection component 6 includes a protective shell 61, in which a thermal insulation lining plate 62 is arranged. The thermal insulation lining plate 62 is covered on the outer side of the high-strength aluminum alloy valve body 1, and a water storage chamber 63 is arranged between the thermal insulation lining plate 62 and the protective shell 61, so as to reduce the large amount of heat transferred from the high-strength aluminum alloy valve body 1 to the outside air, avoid the high temperature environment from affecting some peripheral equipment, and also avoid the staff from being scalded by contacting the high-strength aluminum alloy valve body 1, which is beneficial to the use of the electric control valve.

[0033] It is worth mentioning that a secondary water inlet pipe 64 is connected to a position near the bottom on one side of the protective shell 61, and a secondary water outlet pipe 65 is connected to a position near the top on the other side of the protective shell 61. The secondary water inlet pipe 64 and the secondary water outlet pipe 65 are both connected to the water storage chamber 63. The secondary water inlet pipe 64 is connected to an external water source to inject water into the water storage chamber 63.

[0034] Among them, the electric actuator 4 is the existing technology and will not be described in detail; at the same time, the utility model also includes a power supply, a controller and a switch, which are not the main technical points of this patent and will not be described in detail.

[0035] Working principle and process: When the electric control valve conveys high-temperature fluid, the heat transferred outward by the high-strength aluminum alloy valve body 1 is blocked by the thermal insulation lining plate 62 of the thermal insulation protection component 6 to avoid a large amount of heat being transferred into the air, causing the high temperature environment to affect some surrounding equipment, and also to avoid the high-strength aluminum alloy valve body 1 from scalding the staff. Water is injected into the water storage chamber 63 in the protective shell 61 through the secondary water inlet pipe 64 to absorb the heat transferred by the thermal insulation lining plate 62 to further ensure the thermal insulation effect. Cold water is injected into the cold water chamber 53 of the heat absorption component 5 through the primary water inlet pipe 54, and the heat on the valve stem 3 is transferred through the heat-conducting lining plate 52, and the heat is absorbed by the cold water in the cold water chamber 53 to reduce the heat transferred to the electric actuator 4 through the valve stem 3, so as to reduce the impact on the electric actuator 4, which is beneficial to the use of the electric control valve.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric regulating valve, comprising a high-strength aluminum alloy valve body (1), characterized in that: The high-strength aluminum alloy valve body (1) is provided with a valve core (2), the valve core (2) is connected to a valve stem (3), the valve stem (3) is connected to an electric actuator (4), a heat absorption component (5) is provided on the valve stem (3), and a heat insulation protection component (6) is provided on the outer side of the high-strength aluminum alloy valve body (1).

2. The electric regulating valve according to claim 1, characterized in that: Both ends of the high-strength aluminum alloy valve body (1) are respectively fixedly connected to connecting flanges (7) via pipelines.

3. The electric regulating valve according to claim 1, characterized in that: The heat absorption component (5) comprises a protective tube (51), the inner side of which is fixedly connected to a heat-conducting lining plate (52), and a cold water chamber (53) is provided between the heat-conducting lining plate (52) and the protective tube (51).

4. The electric regulating valve according to claim 3, characterized in that: A first-level water inlet pipe (54) is connected to a position near the bottom of one side of the protection tube (51), and a first-level water outlet pipe (55) is connected to a position near the top of the other side of the protection tube (51). Both the first-level water inlet pipe (54) and the first-level water outlet pipe (55) are connected to the cold water chamber (53).

5. The electric regulating valve according to claim 3, characterized in that: The top and bottom of the protection tube (51) are respectively fixedly connected with a fixing ring (8), the inner wall of the fixing ring (8) is provided with a sealing ring (9), and the inner wall of the sealing ring (9) is in close contact with the valve stem (3).

6. The electric regulating valve according to claim 1, characterized in that: The heat-insulating protection component (6) comprises a protective shell (61), a heat-insulating inner lining plate (62) is arranged inside the protective shell (61), the heat-insulating inner lining plate (62) is coated on the outer side of the high-strength aluminum alloy valve body (1), and a water storage chamber (63) is arranged between the heat-insulating inner lining plate (62) and the protective shell (61).

7. The electric regulating valve according to claim 6, characterized in that: A secondary water inlet pipe (64) is connected to a position near the bottom of one side of the protective shell (61), and a secondary water outlet pipe (65) is connected to a position near the top of the other side of the protective shell (61). Both the secondary water inlet pipe (64) and the secondary water outlet pipe (65) are connected to the water storage chamber (63).

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