A hot oil pump vacuumizing device

Abstract

The utility model discloses a hot oil pump vacuumizing device, the device sets up simply, convenient to use, sets up vacuum pipeline and emptying pipeline at the oil outlet pipe, and the air in the hot oil pump is extracted through the vacuum pump, and then the filling pump operation is carried out by combining the opening and closing of relevant valves, so as to reduce the risk in the filling pump process of the hot oil pump, and the safety demand when the hot oil pump is overhauled can be satisfied.

Description

Technical Field

[0001] This utility model relates to the field of hot oil pump maintenance technology, specifically a hot oil pump vacuuming device. Background Technology

[0002] Hot oil pumps play several important roles in industrial production, primarily ensuring the circulation of heat transfer oil, precisely controlling temperature, improving system safety, and achieving energy savings. Since hot oil pumps operate at high temperatures for extended periods, their maintenance is equally crucial. Ensuring good pump sealing performance and preventing leaks are essential measures for safe production. Regular maintenance and upkeep can effectively extend the service life of hot oil pumps. When a hot oil pump is put back into service after maintenance, it needs to be primed. Due to the high oil temperature, contact with large amounts of air can easily lead to spontaneous combustion or flash explosion, posing a significant risk. Improper operation could threaten production safety.

[0003] Therefore, it is necessary to provide a vacuum pumping device for hot oil pumps to meet the safety requirements during hot oil pump maintenance. Utility Model Content

[0004] The purpose of this utility model is to provide a vacuum pumping device for hot oil pumps to meet the safety requirements during hot oil pump maintenance.

[0005] To achieve the above objectives, the solution of this utility model is as follows:

[0006] A hot oil pump vacuuming device includes a hot oil pump with an inlet pipe and an outlet pipe; the inlet pipe is equipped with a valve one, and the outlet pipe is equipped with a valve two and a valve three; a vent pipe is connected between valve two and valve three, and a valve six is ​​installed on the vent pipe, with a vacuum pipe connected to the front end of valve six; a vacuum pump is connected to the vacuum pipe, with a valve four installed at the front end of the vacuum pump and a valve five installed at the outlet; a thermometer one and a cooler are installed between valve four and the vacuum pump; a circulation pipe is installed at the rear end of valve three and connected to the front end of valve two, with a valve seven installed on the circulation pipe.

[0007] In a preferred embodiment, the second valve is a check valve.

[0008] In a preferred embodiment, a pressure gauge is provided at the front end of the second valve.

[0009] In a preferred embodiment, the outlet of the vacuum pump is provided with valve five, and pressure gauge two is provided at the front end of valve five.

[0010] In a preferred embodiment, a thermometer is provided at the outlet of the cooler.

[0011] In a preferred embodiment, a bypass condensate trap is also provided between valve two and valve three.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] The device described in this utility model is simple to set up and easy to use. It is equipped with a vacuum line and an air venting line in the oil outlet pipe. By using a vacuum pump to extract the air from the hot oil pump, and then combining the opening and closing of relevant valves to carry out the priming operation, the risks in the hot oil pump priming process are reduced, and the safety requirements during hot oil pump maintenance can be met. Attached Figure Description

[0014] Figure 1 A schematic diagram of a hot oil pump vacuum device provided by this utility model.

[0015] The attached figures are labeled as follows:

[0016] E1, Cooler; K1, Valve 1; K2, Valve 2; K3, Valve 3; K4, Valve 4; K5, Valve 5; K6, Valve 6; K7, Valve 7; K8, Valve 8; L1, Oil Inlet Pipe; L2, Oil Outlet Pipe; L3, Vacuum Pipe; L4, Vent Pipe; L5, Circulation Pipe; P1, Hot Oil Pump; PG1, Pressure Gauge 1; PG2, Pressure Gauge 2; T1, Thermometer 1; T2, Thermometer 2; VP1, Vacuum Pump. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] It should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0020] In one embodiment, such as Figure 1 As shown, a hot oil pump vacuum device is proposed, including a hot oil pump P1, which has an oil inlet pipe L1 and an oil outlet pipe L2; the oil inlet pipe L1 is equipped with a valve K1, and the oil outlet pipe L2 is equipped with a valve K2 and a valve K3; a vent pipe L3 connects the valve K2 and the valve K3, and a valve K6 is installed on the vent pipe L3, with a vacuum pipe L4 connected to the front end of the valve K6; the vacuum pipe L4 connects to a vacuum pump VP1, with a valve K4 at the inlet of the vacuum pump VP1 and a valve K5 at the outlet; a thermometer T1 and a cooler E1 are provided between the valve K4 and the vacuum pump VP1; a circulation pipe L5 is installed at the rear end of the valve K3 and connects to the front end of the valve K2, and a valve K7 is installed on the circulation pipe L5.

[0021] In the above embodiment, when the hot oil pump P1 is put into operation after maintenance, it is necessary to use a vacuum to remove air from the hot oil pump P1 and reduce the oxygen content. First, close valves three (K3) and seven (K7), and start the cooling water of the cooler E1; open valve six (K6), valve five (K5) at the outlet of vacuum pump VP1, and valve four (K4) at the inlet, start vacuum pump VP1, slightly open valve one (K1), and open valve two (K2) to perform vacuuming treatment on the hot oil pump P1, reducing the oxygen content in the space inside the hot oil pump P1. When the temperature of the cooler E1 starts to rise rapidly, close valve six (K6) and valve four (K4), and stop vacuum pump VP1. Then, slowly close valve two (K2), fully open valve one (K1), open valves three (K3) and seven (K7), and start the circulation pipe L5. The hot oil in the pipeline can be discharged from the oil outlet pipe L2 or partially returned to the hot oil pump P1, and then primed through the oil inlet pipe L1.

[0022] The device described in the above embodiments is simple to set up and easy to use. A vacuum line and an air venting line are set up in the oil outlet pipe. The air in the hot oil pump is extracted by a vacuum pump, and the pump is primed by opening and closing relevant valves. This reduces the risk of the hot oil pump priming process and can meet the safety requirements during the maintenance of the hot oil pump.

[0023] It is understood that the terms "front end" and "rear end" are relative to the direction of material flow in and out. For example, the front end of a valve is the inlet, and the rear end is the outlet. This is a common way of describing things in this field.

[0024] In a preferred embodiment, valve K2 is a check valve that only allows flow from left to right, meaning it can pass through during vacuuming.

[0025] In a preferred embodiment, in order to facilitate monitoring of the vacuum level, pressure gauge PG1 is provided at the front end of valve K2; and pressure gauge PG2 is provided at the front end of valve K5.

[0026] In a preferred embodiment, a second thermometer T2 is provided at the outlet of the cooler E1 to monitor the temperature changes before and after the cooler, and to determine the degree of air extraction.

[0027] In a preferred embodiment, a bypass condensate drain valve K8 is provided between valve K2 and valve K3, and the pipeline can be vertically installed and bypassed at the bottom of the busbar to drain condensate from the pipeline.

[0028] In another operating condition, such as when the hot oil pump leaks, after ruling out internal leakage in the valve, vacuum tube L4 can be used to reduce the pressure in the pump body and pipeline to reduce the leakage. Then, the leak point can be dealt with under the cover of steam or nitrogen, or further oil removal and shutdown can be implemented.

[0029] It is understood that the pipeline material used in the hot oil pump vacuum device can be selected according to the requirements of heat resistance and corrosion resistance, and the type of instruments or valves used can be selected according to the requirements of automation. All of these are within the design scope of this solution and will not be elaborated here.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vacuum pump device for hot oil pumps, characterized in that, It includes a hot oil pump (P1), which has an oil inlet pipe (L1) and an oil outlet pipe (L2); the oil inlet pipe (L1) is equipped with valve one (K1), and the oil outlet pipe (L2) is equipped with valve two (K2) and valve three (K3); the valve two (K2) and valve three (K3) are connected by a vent pipe (L3), and valve six (K6) is equipped on the vent pipe (L3). The front end of valve six (K6) is connected to a vacuum pipe (L4); the vacuum pipe (L4) is connected to a vacuum pump (VP1), and valve four (K4) is equipped at the front end of the vacuum pump (VP1). Valve five (K5) is equipped at the outlet. A thermometer one (T1) and a cooler (E1) are provided between valve four (K4) and the vacuum pump (VP1); the rear end of valve three (K3) is equipped with a circulation pipe (L5) connected to the front end of valve two (K2), and valve seven (K7) is equipped on the circulation pipe (L5).

2. The apparatus as claimed in claim 1, characterized in that, The valve two (K2) is a check valve.

3. The apparatus as described in claim 1, characterized in that, Pressure gauge 1 (PG1) is installed at the front end of valve 2 (K2).

4. The apparatus as claimed in claim 1, characterized in that, Pressure gauge 2 (PG2) is installed at the front end of valve 5 (K5).

5. The apparatus as claimed in claim 1, characterized in that, Thermometer 2 (T2) is installed at the outlet of the cooler (E1).

6. The apparatus as claimed in claim 1, characterized in that, A bypass condensate valve (K8) is also provided between valve two (K2) and valve three (K3).

Images