A detection device for high-temperature circulating acid pump dry gas seal

Abstract

The utility model discloses a detection device for high temperature circulating acid pump dry gas seal, including nitrogen gas source, PVC hose, glass rotor flowmeter and connecting assembly, PVC hose includes hose A and hose B, both ends of hose A are connected with nitrogen gas source and glass rotor flowmeter's import end through connecting assembly, one end of hose B is connected with glass rotor flowmeter's export end through connecting assembly, and the other end is connected with the dry gas seal interface of the pump body to be detected, the utility model discloses nitrogen in nitrogen gas source is transported to glass rotor flowmeter real -time monitoring nitrogen flow through PVC hose, and then is transported to dry gas seal place and is detected. The leakage condition of dry gas seal is judged through the flow change, ensures in time finding the leakage problem of dry gas seal before installation, avoids the acid pump of taking fault and puts into production line, thereby reduces the failure caused by the seal failure, reduces the production interruption and maintenance cost caused by shutdown maintenance, guarantees the stability and security of production system.

Description

Technical Field

[0001] This utility model relates to the field of dry gas seal testing technology, specifically to a testing device for dry gas seals of high-temperature circulating acid pumps. Background Technology

[0002] In copper smelting flue gas acid production systems, high-temperature circulating acid pumps are core conveying equipment, and their operational reliability directly affects the stability of the production system. Currently, high-temperature circulating acid pumps generally use dry gas sealing technology for sealing, with the sealing surface material mostly being hard and brittle silicon carbide (SiC), which has excellent corrosion resistance and wear resistance. However, during equipment assembly, transportation, storage, and installation, mechanical collisions or vibrations can easily cause micro-cracks or even damage to the dry gas seal. If the leakage problem of the dry gas seal is not detected in time before installation, the faulty acid pump can be directly put into the production line, resulting in high-temperature concentrated acid leaking into the sealing cavity from cracks or damage. This not only accelerates seal failure but may also cause a chain of failures such as bearing corrosion and increased pump body vibration, seriously threatening equipment safety. Moreover, after a failure occurs, shutdown and repair are required, causing production line interruption, extended production time, and significantly increased maintenance costs, resulting in serious economic losses for the enterprise. Utility Model Content

[0003] The purpose of this invention is to provide a detection device for dry gas seals of high-temperature circulating acid pumps that can quickly detect and accurately determine leakage conditions and is easy to operate. This device solves the technical problems in the prior art where micro-cracks or damage to dry gas seals are difficult to detect before installation, leading to equipment operation with faults, high-temperature concentrated acid leakage, bearing corrosion, unplanned production line interruptions, and high maintenance costs.

[0004] To solve the above technical problems, the solution adopted by this utility model is as follows: A detection device for dry gas seal of a high-temperature circulating acid pump includes a nitrogen source, a PVC hose, a glass rotor flowmeter, and a connecting assembly. The PVC hose includes hose A and hose B. Both ends of hose A are connected to the nitrogen source and the inlet of the glass rotor flowmeter via the connecting assembly. One end of hose B is connected to the outlet of the glass rotor flowmeter via the connecting assembly, and the other end is connected to the dry gas seal interface of the pump body to be tested. The nitrogen source is nitrogen stored in medium-sized nitrogen cylinders with specifications of 2L, 4L, 8L, 10L, 40L, and 50L. The specific specification can be selected according to the needs. If portability is required, a smaller nitrogen cylinder is selected; if multiple samples need to be continuously tested, a larger nitrogen cylinder is selected.

[0005] In use, connect the nitrogen source, hose A, glass rotor flowmeter, hose B, and the dry gas seal to be tested in the following order using the connecting assembly. A stable nitrogen source is provided from the aluminum alloy cylinder. Nitrogen flows out from the valve of the aluminum alloy cylinder and is delivered to the glass rotor flowmeter through hose A. The operator records the initial position of the float inside the flowmeter. The nitrogen from the glass rotor flowmeter is then delivered to the dry gas seal to be tested through hose B. During the test, the glass rotor flowmeter monitors the nitrogen flow rate in real time. Changes in flow rate are used to determine the leakage status of the sealing system. If the float position inside the glass rotor flowmeter remains relatively stable, there is no leakage in the dry gas seal; if the float position rises, it indicates a leakage. The overall leakage situation is judged based on the rising displacement of the float. After the test, simply close the valve of the aluminum alloy cylinder storing nitrogen, disconnect hose A from the aluminum alloy cylinder, and hose B from the tested dry gas seal. The device can then be stored. The overall installation and disassembly are convenient. The connecting assembly ensures a secure connection between all components, preventing gas leakage and guaranteeing the accuracy of the testing process.

[0006] Furthermore, the connecting assembly includes a hose clamp and an internally threaded pagoda connector that matches the dry gas sealing interface; both ends of the hose A are connected to the nitrogen source and the inlet end of the glass rotor flowmeter via the hose clamp; both ends of the hose B are connected to the outlet end of the glass rotor flowmeter and the internally threaded pagoda connector via the hose clamp.

[0007] After connecting both ends of hose A to the output end of the aluminum alloy cylinder and the inlet end of the glass rotor flowmeter, the two ends of hose A are fixed with hose clamps. One end of hose B is fixed to the outlet end of the glass rotor flowmeter with hose clamps, and the other end is fixed to one end of the internal thread pagoda connector. The other end of the internal thread pagoda connector is connected to the dry gas seal interface of the pump body to be tested. After all the equipment is connected, the nitrogen gas source is turned on for flow testing.

[0008] Furthermore, a pressure gauge is provided on the left side of the glass rotor flowmeter; the hose A is connected to the inlet end of the glass rotor flowmeter through the pressure gauge. The pressure gauge and the glass rotor flowmeter are mounted on a fixed plate, with the pressure gauge installed on the left side of the glass rotor flowmeter and securely connected to the inlet end of the flowmeter. One end of the hose A is connected to the output end of the aluminum alloy cylinder storing nitrogen, and the other end is connected to the pressure gauge. Nitrogen flows into the flowmeter after passing through the pressure gauge. The pressure gauge is used to monitor the nitrogen pressure in real time to ensure that the pressure is within a safe range and to avoid affecting the detection results due to excessively high or low pressure.

[0009] The working principle of this utility model is as follows: During use, connect all components in the following order: nitrogen source, hose A, pressure gauge, glass rotor flowmeter, hose B, internal threaded pagoda connector, and the dry gas seal to be tested. Hoses A and B are secured to the connected components with hose clamps to ensure a firm connection, prevent gas leakage, and guarantee the accuracy of the testing process. The nitrogen source is nitrogen from an aluminum alloy cylinder, providing a stable gas supply. Nitrogen flows from the valve of the aluminum alloy cylinder, is delivered through hose A to the pressure gauge for pressure testing, and then to the glass rotor flowmeter. At this point, the operator records the initial position of the float inside the flowmeter. The nitrogen passing through the glass rotor flowmeter is then delivered through hose B to the inner... At the threaded pagoda connector, the nitrogen gas is introduced into the dry gas seal to be tested through the internal threaded pagoda connector. During the test, a pressure gauge and a glass rotor flowmeter monitor the pressure and flow rate of nitrogen in real time. The leakage of the sealing system is judged by the changes in pressure and flow rate. If the position of the float inside the glass rotor flowmeter remains relatively stable, the dry gas seal has no leakage; if the float rises, it indicates that there is a leakage in the dry gas seal. The overall leakage situation is judged based on the rising displacement of the float. After the test is completed, the valve of the aluminum alloy steel cylinder storing nitrogen is directly closed, and hose A is disconnected from the aluminum alloy steel cylinder, and hose B is disconnected from the tested dry gas seal. The equipment can then be stored, making the overall installation and disassembly convenient.

[0010] The beneficial effects of this utility model are as follows: This invention uses a flow meter to monitor nitrogen flow rate in real time and a pressure gauge to monitor nitrogen pressure in real time. By analyzing changes in flow rate and pressure, it determines the leakage of the sealing system, ensuring that dry gas seal leaks are detected in time before installation. The dual monitoring design ensures the accuracy and safety of the testing process. The hose clamps and internal threaded pagoda connectors of the connecting components ensure a firm connection between each component and the dry gas seal to be tested, preventing gas leakage. The whole system can achieve rapid and reliable on-site testing, avoiding the use of faulty acid pumps in the production line, reducing cascading failures caused by seal failure, lowering maintenance costs, ensuring the stability and safety of the production system, and saving enterprises a lot of economic losses. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0012] In the diagram: 1. Nitrogen gas source; 2. PVC hose; 21. Hose A; 22. Hose B; 3. Glass rotor flow meter; 31. Pressure gauge; 4. Connecting assembly; 5. Hose clamp; 6. Internal threaded pagoda connector. Detailed Implementation

[0013] 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.

[0014] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0015] The following is a detailed description of the detection device for dry gas seal of a high-temperature circulating acid pump according to the present invention, with reference to the accompanying drawings: A testing device for dry gas seals of high-temperature circulating acid pumps includes a nitrogen source 1, a PVC hose 2, a glass rotor flowmeter 3, and a connecting assembly 4. The PVC hose 2 includes hose A21 and hose B22. The connecting assembly 4 includes a hose clamp 5 and an internally threaded pagoda connector 6 that matches the dry gas seal interface to be tested. A pressure gauge 31 is installed at the left inlet end of the glass rotor flowmeter 3. One end of hose A21 is connected to the nitrogen source 1 via the hose clamp 5, and the other end is connected to the pressure gauge 31, which in turn connects to the inlet end of the glass rotor flowmeter 3. Both ends of hose B22 are connected to the outlet end of the glass rotor flowmeter 3 and the internally threaded pagoda connector 6 via the hose clamp 5. The nitrogen source 1 is a two-liter aluminum alloy cylinder containing nitrogen. This capacity aluminum alloy cylinder is compact and portable, with a diameter of 140mm, a height of 580mm, and a weight of approximately 5.3kg.

[0016] The working principle of this embodiment is as follows: In use, connect all components in the following order: nitrogen source 1, hose A21, pressure gauge 31, glass rotor flowmeter 3, hose B22, internal thread pagoda connector 6, and the dry gas seal to be tested. Hoses A21 and B22 are fixed to the connected components by hose clamps 5. Nitrogen source 1 is nitrogen from an aluminum alloy cylinder, used to provide a stable gas supply. Nitrogen flows out from the valve of the aluminum alloy cylinder, is delivered through hose A21 to pressure gauge 31 for pressure testing, and then is delivered to glass rotor flowmeter 3. At this time, the operator records the initial position of the float inside the flowmeter. Nitrogen gas passing through the glass rotor flowmeter 3 is delivered to the internal thread pagoda connector 6 via hose B22. It then enters the dry gas seal to be tested through the internal thread pagoda connector 6. During the test, pressure gauge 31 and the glass rotor flowmeter 3 monitor the pressure and flow rate of the nitrogen gas in real time. The leakage of the sealing system is determined by the change in pressure and the rise and fall of the float within the flowmeter. After the test, the valve of the aluminum alloy cylinder storing nitrogen is directly closed, and hose A21 is disconnected from the aluminum alloy cylinder, and hose B22 is disconnected from the tested dry gas seal. The equipment can then be stored, making overall installation and disassembly convenient.

[0017] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A detection device for high temperature cyclic acid pump dry gas seal, characterized in that: It includes a nitrogen gas source (1), a PVC hose (2), a glass rotor flow meter (3), and a connecting assembly (4); the PVC hose (2) includes hose A (21) and hose B (22); both ends of hose A (21) are connected to the inlet ends of the nitrogen gas source (1) and the glass rotor flow meter (3) through the connecting assembly (4); one end of hose B (22) is connected to the outlet end of the glass rotor flow meter (3) through the connecting assembly (4), and the other end is connected to the dry gas sealing interface of the pump body to be tested.

2. The detection device for dry gas seal of high temperature circulating acid pump according to claim 1, characterized in that: The connecting assembly (4) includes a hose clamp (5) and an internal thread pagoda connector (6) that matches the dry gas sealing interface; both ends of the hose A (21) are connected to the nitrogen source (1) and the inlet end of the glass rotor flow meter (3) through the hose clamp (5); both ends of the hose B (22) are connected to the outlet end of the glass rotor flow meter (3) and the internal thread pagoda connector (6) through the hose clamp (5).

3. The detection device for dry gas seal of a high-temperature circulating acid pump according to claim 1, characterized in that: A pressure gauge (31) is provided on the left side of the glass rotor flowmeter (3); the hose A (21) is connected to the inlet end of the glass rotor flowmeter (3) through the pressure gauge (31).

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