Plug valve with electric heating mechanism

Abstract

The invention discloses a plug valve with an electric heating mechanism, which solves the problem that the heating efficiency of the plug valve in the existing oil discharge assembly is too low or the heating cost is too high, and specifically comprises a plug valve body arranged on a tank body of an asphalt tank truck, and an electric control module mounted on the tank body through an electric control mounting seat, the electric heating module is mounted on the plug valve body; the electric control module is connected with the electric heating module and is used for managing and controlling the power-on and power-off, the heating temperature and the power utilization safety of the electric heating module; the electric heating module comprises electric heaters symmetrically wrapping the two sides of the plug valve body respectively. The electric heater comprises a protective shell, a heat preservation material arranged in the protective shell and a heating layer arranged on the face, close to the plug valve body, of the protective shell. The surface type of the side face, close to the plug valve body, of the heating layer is matched with the surface type of the corresponding outer wall of the plug valve body. And the heating layer is electrically connected with the electric control module.

Description

Technical Field

[0001] This invention relates to plug valves, and more specifically to a plug valve with a built-in electric heating mechanism. Background Technology

[0002] Asphalt railway tank cars are equipped with oil discharge assemblies. During unloading, the stopcock valves in these assemblies typically need to be heated. Existing heating methods include whole-car electric heating and whole-car fire-tube heating. The former lacks a separate heating structure for the stopcock valve, while the latter incorporates a steam heating jacket. For whole-car electric heating, the heat is primarily transferred from the tank body to the stopcock valve, resulting in very low heating efficiency. In practice, even the asphalt inside the stopcock valve may not be effectively heated, significantly extending the overall heating time of the tank car and negatively impacting unloading. For whole-car fire-tube heating, the heating of the stopcock valves requires highly sophisticated on-site infrastructure, necessitating the installation of expensive high-pressure steam heating equipment at the unloading site, leading to prohibitively high heating costs. Summary of the Invention

[0003] To address the technical problems of low heating efficiency or high heating cost of plug valves in existing oil discharge assemblies, this invention provides a plug valve with a built-in electric heating mechanism.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A plug valve with a built-in electric heating mechanism for use in asphalt tank trucks;

[0006] Its special feature is:

[0007] It includes a stopcock valve body installed on the tank of an asphalt tanker, an electronic control module installed on the tank via an electronic control mounting base, and an electric heating module installed on the stopcock valve body;

[0008] The electrical control module is connected to the electric heating module and is used to control the power supply, heating temperature, and electrical safety of the electric heating module.

[0009] The electric heating module includes electric heaters symmetrically wrapped around both sides of the plug valve body;

[0010] The electric heater includes a protective shell, insulation material disposed inside the protective shell, and a heating layer disposed on the side of the protective shell near the plug valve body;

[0011] The side profile of the heating layer near the valve body matches the corresponding outer wall profile of the valve body; the heating layer is electrically connected to the electronic control module.

[0012] Furthermore, each of the heating layers is provided with a connecting lug at its edge;

[0013] The two heating layers located on both sides of the plug valve body are connected by corresponding connecting lugs and fasteners passing through the two corresponding connecting lugs.

[0014] Furthermore, an electric heating element is embedded within the heating layer;

[0015] The electric heating element is electrically connected to the electronic control module.

[0016] Furthermore, the electric heating element is an electric heating tube.

[0017] Furthermore, an electric heating element is attached to the surface of the heating layer away from the valve body;

[0018] The electric heating element is electrically connected to the electronic control module.

[0019] Furthermore, the electric heating element is a PTC.

[0020] Furthermore, the heating layer is a cast aluminum block or a cast copper block.

[0021] Furthermore, the signal cable interface and heating cable interface of the electric heating element are disposed on the protective housing.

[0022] Furthermore, a thermally conductive material is filled between the heating layer and the valve body.

[0023] Furthermore, the fastener is a bolt.

[0024] The beneficial effects of this invention are:

[0025] 1. The plug valve with a built-in electric heating mechanism provided by the present invention has low requirements for the infrastructure configuration of the unloading site, requiring only a 220V AC power supply, and does not require special high-pressure steam heating equipment.

[0026] 2. The plug valve provided by the present invention has a function of heating the plug valve body separately, which has high heating efficiency and saves unloading time. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of an embodiment of the plug valve with a built-in electric heating mechanism of the present invention installed on a tank body;

[0028] Figure 2 This is a schematic diagram of the structure of the electric heating module in an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the heater structure in an embodiment of the present invention;

[0030] Figure 4 yes Figure 3The front view;

[0031] Figure 5 yes Figure 3 A partial sectional view of the side.

[0032] Icon labels:

[0033] 1-Tank body, 2-Plug valve body, 21-Electrical control mounting base, 3-Electrical control module, 4-Electrical heating module, 41-Electrical heater, 411-Protective shell, 412-Heating layer, 413-Connecting ear, 414-Fastener, 415-Signal cable interface, 416-Heating cable interface. Detailed Implementation

[0034] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] This embodiment provides a plug valve with a built-in electric heating mechanism for use in asphalt tank trucks, such as... Figure 1 As shown, it includes a stopcock valve body 2 installed on the tank body 1 of the asphalt tanker, an electrical control module 3 installed on the tank body 1 via an electrical control mounting base 21, and an electric heating module 4 installed on the stopcock valve body 2.

[0036] The electronic control module 3 and the electric heating module 4 are connected by heating cables and signal cables.

[0037] The electrical control module 3 is fixedly mounted on the electrical control mounting base 21 by fasteners; the electrical control module 3 is used to control the power supply, heating temperature and electrical safety of the electric heating module 4.

[0038] like Figure 2 As shown, the electric heating module 4 includes electric heaters 41 that are symmetrically wrapped around both sides of the plug valve body 2.

[0039] Combination Figures 3 to 5 As shown, the electric heater 41 includes a protective shell 411, heat insulation material disposed inside the protective shell 411, and a heating layer 412 disposed on the side of the protective shell 411 near the plug valve body 2.

[0040] The protective housing 411 is provided with a signal cable interface 415 and a heating cable interface 416, which are respectively connected to the electronic control module 3.

[0041] The heating layer 412 is made of cast aluminum or cast copper, i.e., a cast aluminum block or a cast copper block. The side surface of the heating layer 412 near the plug valve body 2 matches the corresponding outer wall surface of the plug valve body 2. Each heating layer 412 has a connecting lug 413 at its edge. The two heating layers 412 located on both sides of the center of the plug valve body 2 are connected by the corresponding connecting lug 413 and fasteners 414 passing through the two corresponding connecting lugs 413. The fasteners 414 can be bolts.

[0042] The heating layer 412 is embedded with an electric heating element that is electrically connected to the electronic control module 3; the electric heating element is an electric heating tube; or the surface of the heating layer 412 away from the valve body 2 is covered with an electric heating element that is electrically connected to the electronic control module 3, the electric heating element being a PTC.

[0043] The space between the heating layer 412 and the valve body 2 is filled with a thermally conductive material.

[0044] When the electric heater 41 is powered on, the electric heating element (heating tube or PTC) generates heat through resistance heating, and conducts it to the stop valve body 2 through the cast aluminum block wrapped around the heating tube and the heat-conducting material located between the cast aluminum block and the stop valve body 2, so as to heat the stop valve body 2.

[0045] Meanwhile, the insulation material inside the protective housing 411 prevents the ineffective loss of heat; the protective housing 411 protects the electric heating module 4; the signal cable interface 415 and the heating cable interface 416 on the outside of the electric heater 41 can be connected to the electronic control module 3 through the signal cable and the heating cable, respectively.

[0046] The electrical control module 3 is used to automatically control the power supply, heating temperature, and electrical safety of the electric heating module 4. It mainly consists of a vehicle-mounted electrical control box and has functions such as grounding protection, leakage protection, overvoltage protection, overcurrent protection, overload alarm, digital temperature controller, over-temperature alarm and protection, and sensor disconnection alarm and protection.

[0047] This plug valve with its built-in electric heating mechanism only requires connecting a standard 220V AC power supply from the ground to the socket in the electrical control box of the railway asphalt tank car to achieve rapid, individual heating. This eliminates the need for dedicated high-pressure steam heating equipment at the unloading site and avoids the need to extend the overall heating time of the entire vehicle.

[0048] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present invention should be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A plug valve with a built-in electric heating mechanism for use in asphalt tank trucks; Its features are: It includes a stopcock valve body (2) installed on the tank body (1) of the asphalt tanker, an electrical control module (3) installed on the tank body (1) via an electrical control mounting base (21), and an electric heating module (4) installed on the stopcock valve body (2); The electrical control module (3) is connected to the electric heating module (4) and is used to control the power supply, heating temperature and electrical safety of the electric heating module (4). The electric heating module (4) includes electric heaters (41) that are symmetrically wrapped around both sides of the plug valve body (2); The electric heater (41) includes a protective shell (411), heat insulation material disposed inside the protective shell (411), and a heating layer (412) disposed on the side of the protective shell (411) near the plug valve body (2); The side profile of the heating layer (412) near the plug valve body (2) matches the corresponding outer wall profile of the plug valve body (2); the heating layer (412) is electrically connected to the electronic control module (3).

2. The plug valve with a self-contained electric heating mechanism according to claim 1, characterized in that: Each of the heating layers (412) is provided with a connecting lug (413) at its edge; The two heating layers (412) located on both sides of the plug valve body (2) are connected by corresponding connecting ears (413) and fasteners (414) passing through the two corresponding connecting ears (413).

3. The plug valve with a self-contained electric heating mechanism according to claim 2, characterized in that: The heating layer (412) is embedded with an electric heating element; The electric heating element is electrically connected to the electric control module (3).

4. The plug valve with a self-contained electric heating mechanism according to claim 3, characterized in that: The electric heating element is an electric heating tube.

5. The plug valve with a self-contained electric heating mechanism according to claim 2, characterized in that: An electric heating element is attached to the surface of the heating layer (412) away from the valve body (2); The electric heating element is electrically connected to the electric control module (3).

6. The plug valve with a self-contained electric heating mechanism according to claim 5, characterized in that: The electric heating element is a PTC.

7. The plug valve with a self-contained electric heating mechanism according to claim 3 or 5, characterized in that: The heating layer (412) is a cast aluminum block or a cast copper block.

8. The plug valve with a self-contained electric heating mechanism according to claim 7, characterized in that: The signal cable interface (415) and heating cable interface (416) of the electric heating element are disposed on the protective housing (411).

9. The plug valve with a self-contained electric heating mechanism according to claim 8, characterized in that: The space between the heating layer (412) and the valve body (2) is filled with a thermally conductive material.

10. The plug valve with a self-contained electric heating mechanism according to claim 2, 3, or 5, characterized in that: The fastener (414) is a bolt.

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