Plug valve with electric heating mechanism

Abstract

The utility model 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 arranged 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] The utility model relates to a plug valve, in particular to a plug valve with an electric heating mechanism. Background Art

[0002] Asphalt railroad tank cars are all equipped with an oil drain assembly. During unloading, the plug valve in the drain assembly typically needs to be heated. Existing heating methods include whole-car electric heating and whole-car fire-tube heating. The plug valve in the former lacks a separate heating structure, while the plug valve in the latter incorporates a steam heating jacket. With whole-car electric heating, the heating efficiency is very low, relying solely on the heat from the tank body to be slowly transferred to the plug valve. In practice, even the asphalt within the plug valve cannot be effectively heated, significantly extending the heating time of the entire asphalt tank car and adversely affecting normal unloading. With fire-tube heating, heating the plug valve places significant demands on the on-site infrastructure, requiring expensive, high-pressure steam heating equipment to be specifically configured at the unloading site, resulting in prohibitively high heating costs. Utility Model Content

[0003] In order to solve the technical problems of low heating efficiency or high heating cost of plug valves in existing oil discharge assemblies, the utility model provides a plug valve with a built-in electric heating mechanism.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A plug valve with an electric heating mechanism, used in asphalt tank trucks;

[0006] Its special features are:

[0007] It includes a plug valve body arranged on the tank body of an asphalt tank truck, an electric control module mounted on the tank body through an electric control mounting seat, and an electric heating module mounted on the plug valve body;

[0008] The electric control module is connected to the electric heating module and is used to control the power on and off, heating temperature, and power 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, a heat-insulating material arranged in the protective shell, and a heating layer arranged on a side of the protective shell close to the plug valve body;

[0011] The side surface of the heating layer close to the plug valve body matches the corresponding outer wall surface of the plug valve body; the heating layer is electrically connected to the electric control module.

[0012] Further, each of the heating layer is provided with a connecting lug at the edge thereof;

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

[0014] Further, the heating layer is embedded with an electric heating element;

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

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

[0017] Further, the electric heating element is an electric heating tube.

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

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

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

[0021] Further, the signal cable interface and the heating cable interface of the electric heating element are arranged on the protective shell.

[0022] Further, the heating layer is filled with a heat-conducting material between the plug valve body.

[0023] Further, the fastener is a bolt.

[0024] The beneficial effects of the present application are as follows:

[0025] 1. The plug valve with an electric heating mechanism provided by the present application has low requirements for infrastructure configuration of a car unloading site, and only 220V AC power supply is needed, without the need of specially configured high-pressure steam heating equipment.

[0026] 2. The plug valve with an electric heating mechanism provided by the present application has the function of separately heating the plug valve body, has high heating efficiency, and saves car unloading time. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structural schematic view of the plug valve with an electric heating mechanism of the present application installed on a tank body;

[0028] Figure 2 is a structural schematic view of an electric heating module in the embodiment of the present application;

[0029] Figure 3 is a structural schematic view of a heater in the embodiment of the present application;

[0030] Figure 4 is Figure 3 a front view of

[0031] Figure 5 is Figure 3 a side partial sectional view of

[0032] Reference signs:

[0033] 1 - tank body, 2 - plug valve body, 21 - electric control mounting seat, 3 - electric control module, 4 - electric heating module, 41 - electric heater, 411 - protective shell, 412 - heating layer, 413 - connecting lug, 414 - fastener, 415 - signal cable interface, 416 - heating cable interface. DETAILED DESCRIPTION

[0034] The technical solutions of the present application will be described clearly and completely in combination with the drawings and examples. Obviously, the described examples are only a part of the examples of the present application, rather than all the examples. Based on the examples of the present application, all the other examples obtained by the ordinary skilled in the art without creative labor are within the protection scope of the present application.

[0035] The plug valve with electric heating mechanism provided in the present example is used for asphalt tank truck, as shown in Figure 1 , which comprises a plug valve body 2 arranged on the tank body 1 of the asphalt tank truck, an electric control module 3 installed on the tank body 1 through an electric control mounting seat 21, and an electric heating module 4 installed on the plug valve body 2.

[0036] The electric control module 3 and the electric heating module 4 are connected through a heating cable and a signal cable.

[0037] The electric control module 3 is fastened on the electric control mounting seat 21 through a fastener; the electric control module 3 is used for controlling the on-off of the electric heating module 4, the heating temperature, and the power safety.

[0038] As shown in Figure 2 , the electric heating module 4 comprises electric heaters 41 symmetrically wrapped on both sides of the plug valve body 2.

[0039] In combination with Figures 3 to 5 , the electric heater 41 comprises a protective shell 411, a heat preservation material arranged in the protective shell 411, and a heating layer 412 arranged on the side of the protective shell 411 close to the plug valve body 2.

[0040] The protective shell 411 is provided with a signal cable interface 415 and a heating cable interface 416 connected with the electric control module 3 respectively.

[0041] The heating layer 412 is made of cast aluminum material or cast copper material, namely a cast aluminum block or a cast copper block, and the side surface shape of the heating layer 412 is matched with the corresponding outer wall surface shape of the plug valve body 2; the edge of each heating layer 412 is provided with a connecting lug 413; the two heating layers 412 located on the two sides of the center of the plug valve body 2 are connected through the corresponding connecting lugs 413 and a fastener 414 penetrating through the two corresponding connecting lugs 413, and the fastener 414 can be a bolt.

[0042] The heating layer 412 is embedded with an electric heating element electrically connected with the electric control module 3; the electric heating element is an electric heating tube; or the heating layer 412 is attached with an electric heating element electrically connected with the electric control module 3 on the surface away from the plug valve body 2, and the electric heating element is a PTC.

[0043] The heating layer 412 is filled with a heat-conducting material between the heating layer 412 and the plug valve body 2.

[0044] After the electric heater 41 is powered on, the electric heating element (the electric heating tube or the PTC) generates heat in the form of resistance heat, and the heat is conducted to the plug valve body 2 through the cast aluminum block wrapped outside the electric heating tube and the heat-conducting material between the cast aluminum block and the plug valve body 2, so as to heat the plug valve body 2.

[0045] Meanwhile, the heat-insulating material located inside the protective shell 411 can prevent the invalid loss of heat; the protective shell 411 can protect the electric heating module 4; the signal cable interface 415 and the heating cable interface 416 located on the outer surface of the electric heater 41 can be connected with the electric control module 3 through a signal cable and a heating cable respectively.

[0046] The electric control module 3 is used for automatically controlling the on-off of the electric heating module 4, the heating temperature and the power safety, mainly consists of a vehicle-mounted electric control box, and has the functions of ground protection, leakage protection, overvoltage protection, overcurrent protection, overload alarm, digital temperature controller, over-temperature alarm and protection, sensor disconnection alarm and protection and the like.

[0047] The plug valve with the electric heating mechanism only needs to connect the general 220V alternating current power supply on the ground to the socket of the electric control box of the railway asphalt tank car through a plug, so that the plug valve can be quickly and independently heated. It is not necessary to specially configure a high-pressure steam heating device at the unloading site, and it is not necessary to be forced to prolong the heating time of the whole vehicle.

[0048] The above is only a specific implementation manner of the present application, but the protection scope of the present application is not limited to this, and any change or replacement within the technical scope disclosed by the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A plug valve with an electric heating mechanism, used in asphalt tank trucks; Its characteristics are: It comprises a plug valve body (2) arranged on a tank body (1) of an asphalt tank truck, an electric control module (3) mounted on the tank body (1) via an electric control mounting seat (21), and an electric heating module (4) mounted on the plug valve body (2); The electric control module (3) is connected to the electric heating module (4) and is used to control the power on and off, heating temperature, and electricity safety of the electric heating module (4); The electric heating module (4) comprises electric heaters (41) symmetrically wrapped around both sides of the plug valve body (2); The electric heater (41) comprises a protective shell (411), a heat-insulating material arranged in the protective shell (411), and a heating layer (412) arranged on one side of the protective shell (411) close to the plug valve body (2); The side surface of the heating layer (412) close to the plug valve body (2) matches the corresponding outer wall surface of the plug valve body (2); the heating layer (412) is electrically connected to the electric control module (3).

2. The plug valve with an electric heating mechanism according to claim 1, characterized in that: A connecting ear (413) is provided at the edge of each heating layer (412); The two heating layers (412) located on both sides of the plug valve body (2) are connected via corresponding connecting ears (413) and fasteners (414) passing through the two corresponding connecting ears (413).

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

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

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

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

9. The plug valve with an electric heating mechanism according to claim 8, characterized in that: A heat-conducting material is filled between the heating layer (412) and the stopcock body (2).

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

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