Novel mechanical seal atmosphere end leakage collection and detection system

Abstract

The utility model discloses a novel mechanical seal atmosphere end leakage collecting and detecting system, which belongs to the technical field of mechanical seal and comprises a fixed base, a collecting tank is mounted at the top of the fixed base and communicated with a liquid inlet pipeline, one end of the liquid inlet pipeline is communicated with a liquid outlet pipeline, and the other end of the liquid outlet pipeline is communicated with a liquid outlet pipeline. A liquid inlet pipeline and a liquid outlet pipeline are arranged on the fixed base, a pressure difference transmitter is arranged on the outer side of the fixed base, an overflow pipe is further communicated with the collecting tank, and one end, far away from the collecting tank, of the overflow pipe is communicated with the liquid outlet pipeline, so that the pressure values of the inlet end and the outlet end of the collecting tank are detected through the pressure difference transmitter; when the mechanical seal leaks, liquid in a pipeline enters the collecting tank, the leaked liquid is collected, meanwhile, the pressure difference transmitter detects pressure change and gives out early warning, the pressure difference transmitter is small in detection error and high in precision, the overall installation height of the device is lower than an end cover of the mechanical seal, and disassembly and assembly treatment is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical seal technical field, concretely is a novel mechanical seal atmosphere end leakage collection and detection system. BACKGROUND

[0002] At present, most single end face mechanical seals do not use leakage collection devices, and if leakage occurs, the leakage will be directly discharged into the atmosphere or collected by a relatively simple collection pipeline or collector.

[0003] In the prior art, the Chinese utility model content with publication number CN219159185U discloses a mechanical seal atmosphere end leakage collection and detection system, which comprises a collection tank, a liquid level switch is arranged on the collection tank, a first union joint is fixedly connected to the bottom of the collection tank, a liquid inlet pipeline is fixedly connected to the first tee pipe, and a ball valve is fixedly connected to the liquid inlet pipeline.

[0004] In the above technical solution, the height of the liquid surface in the collection tank is measured by the liquid level switch to detect leakage above the mechanical seal. However, the liquid level cannot accurately detect whether leakage exists. If leakage occurs in the mechanical seal before, the liquid level in the collection tank will rise. After the fault is eliminated, the pressure in the collection tank will maintain balance, so the liquid level will not decrease, which will interfere with the detection of the next leakage. In addition, the liquid inlet pipeline and the liquid outlet pipeline have a large height difference, which makes installation inconvenient. UTILITY MODEL CONTENT

[0005] The utility model discloses a novel mechanical seal atmosphere end leakage collection and detection system, which is connected with the liquid inlet pipeline and the overflow pipe through a differential pressure transmitter. The pressure value inside the system is detected. When leakage occurs in the mechanical seal, the pressure values on both sides will change. The pressure difference inside the detection pipeline can accurately detect whether leakage exists and issue a warning. The system has high accuracy and low installation height, which is convenient for disassembly and assembly, thereby solving the problems in the background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme: a novel mechanical seal atmosphere end leakage collection and detection system, including fixed base, the top of fixed base is installed with collection jar, the collection jar is connected with liquid inlet pipeline, one end of liquid inlet pipeline is connected with liquid outlet pipeline, the outside of fixed base is installed with differential pressure transmitter, still be connected with overflow pipe on the collection jar, the one end of overflow pipe away from collection jar is connected with liquid outlet pipeline, be provided with two groups of pressure interface on differential pressure transmitter, pressure interface is connected with liquid inlet pipeline and overflow pipe through the pipeline respectively,

[0007] Still include the alarm installed on the top of differential pressure transmitter.

[0008] Preferably, the liquid inlet pipeline is communicated with the bottom of the collection jar, and the overflow pipe is located at the upper end of the side wall of the collection jar.

[0009] Preferably, the liquid inlet pipeline and the liquid outlet pipeline are provided with mounting flanges at the ports thereof, and a flow limiting orifice plate is mounted between the liquid inlet pipeline and the liquid outlet pipeline.

[0010] Preferably, the flow limiting orifice plate is provided with metal winding gaskets on both sides thereof, and the other sides of the metal winding gaskets are attached to the mounting flanges.

[0011] Preferably, the side wall of the collection jar is provided with a support frame, and the support frame is provided with a nameplate.

[0012] Preferably, the middle section of the collection jar is in a circular tube structure, and pipe caps are welded to both ends of the circular tube.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1. The differential pressure transmitter is used to detect the pressure values in the liquid inlet pipeline and the overflow pipe, so as to detect the pressure values at the inlet and outlet of the collection jar. When the mechanical seal leaks, the liquid in the pipeline enters the collection jar to collect the leaked liquid. At the same time, the differential pressure transmitter detects the pressure change and sends a warning. The differential pressure transmitter has small detection error and high accuracy. Moreover, the overall installation height of the device is lower than that of the end cover of the mechanical seal, so that the device is convenient to disassemble and assemble.

[0015] 2. The flow limiting orifice plate is arranged between the liquid inlet pipeline and the liquid outlet pipeline to avoid that the flow speed is too fast when the mechanical seal pressure is high, and the leaked liquid directly impacts the external collection system. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0017] Figure 2 It is a front view structure schematic view of the utility model;

[0018] Figure 3 This is a schematic diagram of the left-side structure of this utility model;

[0019] Figure 4 This is a top view of the structure of this utility model.

[0020] The following are labeled in the diagram: 1. Fixed base; 2. Collection tank; 3. Inlet pipe; 4. Outlet pipe; 5. Differential pressure transmitter; 6. Overflow pipe; 7. Pipeline; 8. Alarm; 9. Mounting flange; 10. Flow limiting orifice plate; 11. Metal spiral wound gasket; 12. Support frame. Detailed Implementation

[0021] 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.

[0022] This utility model provides, for example Figures 1-4 The present invention discloses a novel mechanical seal atmospheric leakage collection and detection system, comprising a fixed base 1, a collection tank 2 mounted on the top of the fixed base 1, an inlet pipe 3 connected to the collection tank 2, an outlet pipe 4 connected to one end of the inlet pipe 3, a differential pressure transmitter 5 mounted on the outside of the fixed base 1, an overflow pipe 6 connected to the collection tank 2, and an end of the overflow pipe 6 away from the collection tank 2 connected to the outlet pipe 4. The differential pressure transmitter 5 is provided with two sets of pressure interfaces, which are respectively connected to the inlet pipe 3 and the overflow pipe 6 through pipes 7.

[0023] It also includes an alarm 8 installed on top of the differential pressure transmitter 5;

[0024] The system collection tank 2 has a volume of 5L and adopts a steel pipe with welded caps at both ends. The container strength has been calculated according to pressure vessel design and can withstand a pressure of 8MPa.

[0025] The differential pressure transmitter 5 detects the pressure values ​​inside the inlet pipe 3 and the overflow pipe 6, thereby detecting the pressure values ​​at the inlet and outlet of the collection tank 2. When the mechanical seal leaks, the liquid in the pipe enters the collection tank 2 to collect the leaked liquid. At the same time, the differential pressure transmitter 5 detects the pressure change and issues an early warning. The differential pressure transmitter 5 has small detection error and high accuracy. Moreover, the overall installation height of the device is lower than the end cover of the mechanical seal, which facilitates disassembly and assembly.

[0026] Among them, such as Figures 1-3 As shown:

[0027] The liquid inlet pipeline 3 is communicated with the bottom of the collecting tank 2, and the overflow pipe 6 is located at the upper end of the side wall of the collecting tank 2. Through the arrangement of the communication positions of the liquid inlet pipeline 3 and the overflow pipe 6 with the collecting tank 2, the machine seal leakage liquid should enter from the bottom of the collecting tank 2, and the liquid is relatively stable and will not cause false alarm. The overflow pipe 6 ensures that the leakage liquid fills the collecting tank 2, and needs to be lifted to fully utilize the collecting function of the collecting tank 2.

[0028] Further, as shown in Figure 2 ,

[0029] The installation flanges 9 are arranged at the ports of the liquid inlet pipeline 3 and the liquid outlet pipeline 4. The flow limiting orifice plate 10 is arranged between the liquid inlet pipeline 3 and the liquid outlet pipeline 4. Through the arrangement of the installation flanges 9, the liquid inlet pipeline 3 and the liquid outlet pipeline 4 are conveniently butt-jointed and installed. At the same time, the flow limiting orifice plate 10 is arranged between the liquid inlet pipeline 3 and the liquid outlet pipeline 4, so as to avoid that when the machine seal pressure is high, the flow rate is too fast, and the leakage liquid may directly impact the external collecting system.

[0030] Preferably, as shown in Figure 2 ,

[0031] The metal winding gaskets 11 are arranged on both sides of the flow limiting orifice plate 10, and the other side of the metal winding gasket 11 is attached to the installation flange 9. Through the metal winding gasket 11, the sealing property of the butt joint of the liquid inlet pipeline 3 and the liquid outlet pipeline 4 is improved, so as to prevent the leakage phenomenon.

[0032] It is worth noting that, as shown in Figure 3 ,

[0033] The support frame 12 is arranged on the side wall of the collecting tank 2, and the nameplate is arranged on the support frame 12. Through the installation and fixation of the nameplate by the support frame 12, some parameters of the device are recorded, so as to ensure the stable operation of the device.

[0034] Further, as shown in Figure 3 ,

[0035] The middle section of the collecting tank 2 is in a circular tube structure, and pipe caps are welded at both ends of the circular tube. Through the limitation of the structure of the collecting tank 2, the stability of the collecting tank 2 is ensured, and the collecting tank 2 can withstand a large pressure value.

[0036] In specific use, the liquid inlet pipeline 3 is connected with the mechanical seal. When the mechanical seal leaks, the leakage liquid will quickly enter the collecting tank 2, so that the liquid level in the collecting tank 2 is raised until the leakage liquid flows out of the collecting tank 2 from the overflow pipe 6. The differential pressure transmitter 5 detects the change of the pressure values in the liquid inlet pipeline 3 and the overflow pipe 6, and the alarm 8 sends a pre-warning. The leakage liquid is collected in the collecting tank 2, and then the excess leakage liquid flows out from the liquid outlet pipeline 4 to the outside and is connected with the external collecting system. The external system should be in a normal pressure state to ensure the discharge of the leakage liquid.

[0037] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A novel mechanical seal atmosphere end leakage collection and detection system comprising a stationary base (1) characterized by: The top of the fixed base (1) is provided with a collecting tank (2), the collecting tank (2) is communicated with a liquid inlet pipeline (3), one end of the liquid inlet pipeline (3) is communicated with a liquid outlet pipeline (4), the outer side of the fixed base (1) is provided with a differential pressure transmitter (5), the collecting tank (2) is further communicated with an overflow pipe (6), the end of the overflow pipe (6) away from the collecting tank (2) is communicated with the liquid outlet pipeline (4), the differential pressure transmitter (5) is provided with two groups of pressure interfaces, the pressure interfaces are connected with the liquid inlet pipeline (3) and the overflow pipe (6) through pipelines (7) respectively. Further comprising an alarm (8) installed on the top of the differential pressure transmitter (5).

2. A novel mechanical seal atmosphere end leakage collection and detection system as claimed in claim 1 characterized by: The liquid inlet pipeline (3) is communicated with the bottom of the collecting tank (2), and the overflow pipe (6) is located at the upper end of the side wall of the collecting tank (2).

3. A novel mechanical seal atmosphere end leakage collection and detection system as claimed in claim 1 characterized by: The ports of the liquid inlet pipeline (3) and the liquid outlet pipeline (4) are provided with mounting flanges (9), and a flow limiting orifice plate (10) is installed between the liquid inlet pipeline (3) and the liquid outlet pipeline (4).

4. A novel mechanical seal atmosphere end leakage collection and detection system as claimed in claim 3, characterized in that: Metal winding gaskets (11) are arranged on both sides of the flow limiting orifice plate (10), and the other side of the metal winding gasket (11) is attached to the mounting flange (9).

5. A novel mechanical seal atmosphere end leakage collection and detection system as claimed in claim 1 characterized by: A support frame (12) is arranged on the side wall of the collecting tank (2), and a nameplate is arranged on the support frame (12).

6. A novel mechanical seal atmosphere end leakage collection and detection system as claimed in claim 1 characterized by: The middle section of the collecting tank (2) is a circular tube structure, and pipe caps are welded at both ends of the circular tube.

Images