Oil stain trapping device for compressor

Abstract

The utility model discloses a compressor oil contamination trapping device, which relates to the technical field of compression trapping devices, and comprises a trapping body, a first flange, a second flange and a liquid level meter, the trapping body is provided with a first reserved opening and a second reserved opening, a first flange connecting pipe is arranged in the first reserved opening, and a second flange connecting pipe is arranged in the second reserved opening. The first flange is mounted on the trapping body through a first flange connecting pipe; a second flange connecting pipe is arranged in the second reserved opening, and the second flange is mounted on the trapping body through the second flange connecting pipe; the liquid level meter comprises a connecting pipe, a pressed diaphragm and a transmitter, the first flange and the second flange are connected through the connecting pipe, the pressed diaphragm is arranged in the connecting pipe, and the pressed diaphragm is electrically connected with the transmitter located outside the connecting pipe. The two flanges are installed on the trapping body, a certain pressure difference can be generated due to the fact that the pressures between the two flanges are different, and the effect of improving the accuracy of measured data can be achieved through the structure of the liquid level meter.

Description

Technical Field

[0001] The utility model relates to the technical field of compression capture devices, in particular to a compressor oil capture device. Background Art

[0002] The liquid level measurement instrument for the oil trap of the synthesis gas compressor in the synthetic ammonia unit uses a float level gauge. With the increase of service time, the float level gauge frequently has inaccurate measurements and fluctuations in measurement data. During the working process, the float is affected by the corrosion of the medium, which will cause the float to be perforated over time, the float to fall off, and the influence of dirt hanging on the wall on the weight of the float, which will eventually affect the accuracy of the liquid level measurement. The synthesis gas compressor is a key equipment in the synthetic ammonia unit, and its safe operation is crucial to the normal production of the unit. The synthesis gas compressor uses a floating ring oil film seal. If the liquid level measurement of the oil trap is inaccurate, a high liquid level will cause the exhaust of the synthesis gas compressor degassing tank to contain oil, and a fire accident will occur when it encounters high temperature; a low liquid level will cause the compressor high-pressure gas to enter the oil tank, which is very likely to cause a safety accident. Utility Model Content

[0003] In order to solve the existing problems of inaccurate liquid level data measurement, high risk factor, etc., the utility model provides a compressor oil pollution collection device.

[0004] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is as follows:

[0005] A compressor oil pollution collection device comprises a collection body, a first flange, a second flange and a liquid level gauge, wherein a first reserved opening and a second reserved opening are provided on the collection body, a first flange connecting pipe is provided in the first reserved opening, and the first flange is installed on the collection body through the first flange connecting pipe; a second flange connecting pipe is provided in the second reserved opening, and the second flange is installed on the collection body through the second flange connecting pipe; the liquid level gauge comprises a connecting pipe, a pressure-bearing diaphragm and a transmitter, the first flange and the second flange are connected by a connecting pipe, the pressure-bearing diaphragm is provided in the connecting pipe, and the pressure-bearing diaphragm is electrically connected to the transmitter located outside the connecting pipe.

[0006] Based on the above technical solution, further, a first stop valve is also provided on the first flange pipe.

[0007] Based on the above technical solution, further, a second stop valve is also provided on the second flange pipe.

[0008] Based on the above technical solution, further, the first flange is installed above the second flange.

[0009] Based on the above technical solution, further, the connecting tube is a capillary tube.

[0010] Based on the above technical solution, further, the pressure-bearing diaphragm includes a fixed capacitor plate and a pressure-sensitive plate, wherein the fixed capacitor plate is provided in two pieces, and the pressure-sensitive plate is provided between the two fixed capacitor plates.

[0011] Based on the above technical solution, further, an isolation mold piece is provided outside the fixed capacitor plate.

[0012] Based on the above technical solution, further, a capacitor chamber is formed between each fixed capacitor plate and the pressure-sensitive plate, and each capacitor chamber is filled with silicone oil.

[0013] Based on the above technical solution, further, each fixed capacitor plate is provided with a signal lead wire, and the fixed capacitor plate is electrically connected to the transmitter through the signal lead wire.

[0014] Based on the above technical solution, further, the transmitter is a flange type liquid level transmitter.

[0015] Compared with the prior art, the beneficial effects of the present invention are specifically embodied in:

[0016] (1) The utility model has two flanges installed on a collecting body containing a medium. The different pressures between the two flanges will generate a certain pressure difference, which is transmitted to the pressure-sensitive plate through the silicone oil sealed in the pressure-bearing diaphragm and the capillary. The pressure-sensitive plate generates a displacement proportional to the pressure. The displacement signal is converted into a standard signal output measurement scheme that reflects the size of the differential pressure through the internal conversion circuit of the transmitter, thereby obtaining the height of the liquid level and improving the accuracy of the measurement data.

[0017] (2) The pressure-bearing diaphragm in the utility model can isolate the process medium, and the silicone oil filled in the capillary can transmit pressure without being affected by movable parts, the flow of high-pressure gas and the corrosiveness of the medium. It is suitable for measuring the liquid surface or interface of corrosive, viscous and suspended liquids.

[0018] (3) The flange type liquid level transmitter in the utility model can maintain stable operation for a long time and is not easily disturbed by the outside world. The flange type structure design allows the transmitter to be easily installed on various pipes and containers, and the installation process is simple and quick. By replacing the original float level gauge with a double flange differential pressure liquid level structure, the fault is eliminated and the existing problem is effectively solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a simplified structural diagram of the utility model;

[0020] Figure 2 This is a simplified structural diagram of the liquid level meter of the utility model;

[0021] Figure 3It is a circuit diagram of the internal conversion circuit of the transmitter of the utility model;

[0022] Figure numerals: 1, capture body; 2, first flange; 3, second flange; 4, first flange connecting pipe; 5, second flange connecting pipe; 6, first stop valve; 7, second stop valve; 8, connecting pipe; 9, pressure-bearing diaphragm; 10, signal lead wire; 11, transmitter; 12, fixed capacitor plate; 13, pressure-sensitive plate. DETAILED DESCRIPTION

[0023] The present invention is further described and illustrated below in conjunction with the accompanying drawings and specific implementations. The technical features of each implementation of the present invention can be combined accordingly without conflicting with each other.

[0024] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed below. The technical features in each embodiment of the utility model can be combined accordingly without conflicting with each other.

[0025] In the description of the present utility model, it is necessary to understand that when an element is considered to be "connected" to another element, it can be directly connected to another element or indirectly connected, that is, there are intermediate elements. On the contrary, when an element is said to be "directly" connected to another element, there are no intermediate elements.

[0026] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0027] Example

[0028] Combination Figure 1As shown, a compressor oil pollution collection device is implemented, including a collection body 1, a first flange 2, a second flange 3 and a liquid level gauge, the collection body 1 is provided with a first reserved opening and a second reserved opening, a first flange pipe 4 is provided in the first reserved opening, and the first flange 2 is installed on the collection body 1 through the first flange pipe 4, wherein the first flange 2 is installed above the second flange 3, and a first stop valve 6 is further provided on the first flange pipe 4, and the liquid flow in the first flange pipe 4 can be controlled by the first stop valve 6; a second flange pipe 5 is provided in the second reserved opening, The second flange 3 is installed on the capture body 1 through the second flange pipe 5, wherein the second flange pipe 5 is also provided with a second stop valve 7, and the liquid flow in the second flange pipe 5 can be controlled by the second stop valve 7; the liquid level meter includes a connecting pipe 8, a pressure diaphragm 9 and a transmitter 11, the first flange 2 and the second flange 3 are connected through the connecting pipe 8, and the pressure diaphragm 9 is arranged in the connecting pipe 8, and the pressure diaphragm 9 is electrically connected to the transmitter 11 located outside the connecting pipe 8; wherein the connecting pipe 8 is a capillary tube, and the transmitter 11 is a flange type liquid level transmitter. Figure 1 The H in the figure represents the liquid level difference, and the specific liquid level difference height is set according to the actual situation.

[0029] Specifically, the pressure-bearing diaphragm 9 includes a fixed capacitor plate 12 and a pressure-sensitive plate 13, wherein the fixed capacitor plate 12 is provided in two pieces, and the pressure-sensitive plate 13 is provided between the two fixed capacitor plates 12, and an isolation mold is also provided outside the fixed capacitor plate 12. A capacitor chamber is formed between each fixed capacitor plate 12 and the pressure-sensitive plate 13, and each capacitor chamber is filled with silicone oil. A signal lead wire 10 is provided on each fixed capacitor plate 12, and the fixed capacitor plate 12 is electrically connected to the transmitter 11 through the signal lead wire 10.

[0030] The working principle of this device is: Figure 2 As shown, the liquid level meter consists of a transmitter 11, a connecting tube 8 and a pressure-bearing diaphragm 9. The isolation mold outside the fixed capacitor plate 12 in the pressure-bearing diaphragm 9 can prevent the medium in the collection body 1 from entering the transmitter 11. The collection body 1 and the transmitter 11 are connected by a capillary filled with liquid. When the liquid level changes, it will cause a change in the pressure difference. The pressure difference is transmitted to the pressure-sensitive plate 13 through the first flange 2, the second flange 3 located at different heights and the silicone oil in the capillary. The pressure-sensitive plate 13 produces a displacement proportional to the pressure. The displacement causes the differential capacitance value of the two capacitor chambers to change. The differential capacitance value is amplified and processed by the electronic circuit in the transmitter 11, and finally converted into a standard current signal output, thereby obtaining the height of the liquid level. Among them, the circuit signal processing can be combined with Figure 3As shown, the transmitter 11 is an existing device, and the specific electronic circuit scheme is not described in detail here. As the detection and conversion part of the process control system, it can convert the pressure difference (pressure), flow, liquid level and other process parameters of liquid, gas or steam into a unified standard signal (such as DC4mA-20mA current) as the input signal of the display instrument, operator and regulator to realize continuous detection and automatic control of the production process.

[0031] This device is designed for measuring places where the medium in the container has high viscosity, is corrosive, and the working temperature and pressure change frequently. This liquid level device can reduce the measurement error caused by frequent liquid level fluctuations, thereby reducing the process, equipment, or safety accidents caused by inaccurate liquid level display.

[0032] The above is only an implementation method of the utility model, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A compressor oil collection device, characterized in that: It includes a capture body, a first flange, a second flange and a liquid level gauge. The capture body is provided with a first reserved opening and a second reserved opening, the first reserved opening is provided with a first flange pipe, and the first flange is installed on the capture body through the first flange pipe; the second reserved opening is provided with a second flange pipe, and the second flange is installed on the capture body through the second flange pipe; The liquid level meter includes a connecting pipe, a pressure-bearing diaphragm and a transmitter. The first flange and the second flange are connected by the connecting pipe, and the pressure-bearing diaphragm is arranged in the connecting pipe. The pressure-bearing diaphragm is electrically connected to the transmitter located outside the connecting pipe.

2. A compressor oil collection device according to claim 1, characterized in that: The first flange connecting pipe is also provided with a first stop valve.

3. A compressor oil collection device according to claim 1, characterized in that: The second flange connecting pipe is also provided with a second stop valve.

4. A compressor oil collection device according to claim 1, characterized in that: The first flange is installed above the second flange.

5. The compressor oil pollution collection device according to claim 1, characterized in that: The connecting tube is a capillary tube.

6. A compressor oil collection device according to claim 1, characterized in that: The pressure-bearing diaphragm comprises a fixed capacitor plate and a pressure-sensitive plate, wherein the fixed capacitor plate is provided in two pieces, and the pressure-sensitive plate is provided between the two fixed capacitor plates.

7. A compressor oil pollution collection device according to claim 6, characterized in that: An isolation mold piece is also arranged outside the fixed capacitor plate.

8. A compressor oil pollution collection device according to claim 6, characterized in that: A capacitance chamber is formed between each fixed capacitance plate and the pressure-sensitive plate, and each capacitance chamber is filled with silicone oil.

9. A compressor oil pollution collection device according to claim 6, characterized in that: Each fixed capacitor plate is provided with a signal lead-out line, and the fixed capacitor plate is electrically connected to the transmitter through the signal lead-out line.

10. The compressor oil pollution collection device according to claim 1, characterized in that: The transmitter is a flange type liquid level transmitter.

Images