Mechanical seal pressure testing device for kettle of polycarbosilane production line

Abstract

The utility model discloses a mechanical seal pressure testing device for a kettle in a polycarbosilane production line, which is mounted at a mechanical seal of a stirring kettle and structurally comprises a shaft sleeve nut connected with the mechanical seal of the stirring kettle through an O-shaped ring, and a connecting seat is arranged above the shaft sleeve nut. A three-way connecting pipe inserted into the connecting seat is arranged on the connecting seat, a pressure gauge is arranged at a top port of the three-way connecting pipe, a pressure release valve and an air inlet valve are respectively arranged on one side of a side port of the three-way connecting pipe, and the other end of the air inlet valve is connected with an air source pipe. After the technical scheme is adopted, the kettle mechanical seal pressure test device for the polycarbosilane production line forms static pressure test under the matching of the O-shaped ring, the shaft sleeve nut, the connecting seat, the pressure gauge, the pressure release valve, the air inlet valve and the air source pipe, so that leakage or faults can be found in time, the problem that a defective mechanical seal is used on line is avoided, and the production efficiency is improved. The sealing liquid is prevented from leaking into the stirring kettle due to failure of the mechanical seal, so that the product quality is prevented from being influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the processing technical field of polycarbosilane, especially relates to a machine seal pressure test device for polycarbosilane production line kettle. BACKGROUND

[0002] In the polycarbosilane production process, the stirring kettle of each related process is harsh, and the machine seal reliability is directly related to the production safety of equipment and the quality guarantee of products under the condition of high temperature and high pressure, so the pressure test inspection and acceptance after the maintenance of the mechanical seal or the pressure test inspection of the newly purchased machine seal are carried out to ensure that the technical specification requirements are met. After the existing fault machine seal is repaired, the pressure test tool does not simulate the working condition, so that frequent faults occur in the running process, and the production efficiency is reduced. UTILITY MODEL CONTENTS

[0003] The utility model discloses a kind of machine seal pressure test devices for polycarbosilane production line kettle, to solve the problems raised in the above background technology.

[0004] To solve the above technical problems, the technical scheme adopted by the utility model is: a machine seal pressure test device for polycarbosilane production line kettle, which is installed at the mechanical seal of the stirring kettle. Its structure includes a shaft sleeve nut connected to the mechanical seal of the stirring kettle through an O-ring. A connecting seat is provided above the shaft sleeve nut. A tee connector is inserted into the connecting seat. A pressure gauge is provided at the top port of the tee connector. A pressure relief valve and an air inlet valve are respectively provided at one side of the side port of the tee connector. A gas source pipe is connected to the other end of the air inlet valve.

[0005] Preferably, a tee connector is connected to the side port of the tee connector. One end of the tee connector is connected to the pressure relief valve, and the other end of the tee connector is connected to the air inlet valve.

[0006] Preferably, the upper part of the connecting seat is above the shaft sleeve nut. The middle and lower parts of the connecting seat are embedded in the middle part of the shaft sleeve nut. The two parts are detachably connected by a locking member.

[0007] Preferably, the locking member is a locking bolt.

[0008] Preferably, the tee connector and the connecting seat are connected by a threaded structure.

[0009] Preferably, the shaft sleeve nut is provided with an internal thread, and the mechanical seal of the stirring kettle is provided with an external thread that forms a threaded structure with the internal thread.

[0010] Preferably, a cooling water inlet end is formed on one side of the mechanical seal, and a cooling water outlet end is formed on the other side of the mechanical seal.

[0011] Preferably, the height of the cooling water inlet end is lower than the height of the cooling water outlet end.

[0012] Preferably, the bottom of the mechanical seal is connected with a blind flange through a flat gasket, and the mechanical seal is connected with the blind flange through fastening bolts.

[0013] From the above description of the structure of the utility model, compared with the prior art, the utility model has the following advantages:

[0014] 1. The machine seal pressure testing device for the poly-carbosilane production line kettle is provided by the utility model, static pressure is formed through cooperation of the O-shaped ring, the shaft sleeve nut, the connecting seat, the pressure gauge, the pressure relief valve, the air inlet valve and the air source pipe, leakage or failure can be found in time, online use of the machine seal with problems is avoided, leakage of the sealing liquid in the mechanical seal to the stirring kettle due to failure is avoided, product quality is affected, flammable and explosive material vapor leakage due to machine seal failure is avoided, production safety accidents are caused, the machine seal pressure testing device is convenient to disassemble and assemble, simple in structure, meets pressure testing working condition requirements, can be used as a special tool for necessary procedures of inspection and acceptance.

[0015] 2. The machine seal pressure testing device for the poly-carbosilane production line kettle is provided by the utility model, pressure components such as the pressure gauge, the pressure relief valve, the air inlet valve and the air source pipe are used, pressure can be monitored under the conditions of pressure charging or pressure relief, and practicality is high. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated herein for illustrative purposes. The embodiments illustrated in the drawings are provided to explain the present application and are not intended to limit the present application. In the drawings:

[0017] Figure 1 Fig. 1 is a structural schematic view of the machine seal pressure testing device for the poly-carbosilane production line kettle of the utility model;

[0018] Figure 2 Fig. 2 is an exploded view of the machine seal pressure testing device for the poly-carbosilane production line kettle of the utility model;

[0019] Figure 3 Fig. 3 is a top view of the connecting seat of the machine seal pressure testing device for the poly-carbosilane production line kettle of the utility model;

[0020] Figure 4 Fig. 4 is a top view of the shaft sleeve nut of the machine seal pressure testing device for the poly-carbosilane production line kettle of the utility model;

[0021] Figure 5 Fig. 5 is a top view of the blind flange of the machine seal pressure testing device for the poly-carbosilane production line kettle of the utility model. DETAILED DESCRIPTION

[0022] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other in the case of no conflict.

[0023] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0024] In the description of the utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0025] The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0026] Embodiment

[0027] Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown in the figure, a kind of poly-carbosilane production line's machine seal test pressure device for kettle, it is installed at the mechanical seal 4 of stirred tank, its structure includes the shaft sleeve nut 22 connected between the mechanical seal 4 of stirred tank by O-ring 23, the upper portion of shaft sleeve nut 22 is provided with connecting seat 21, connecting seat 21 is provided with the tee connection pipe 14 inserted into it, the top port of tee connection pipe 14 is provided with pressure gauge 15, the side port of this tee connection pipe 14 one side is respectively equipped with pressure relief valve 12 and inlet valve 11, the other end of inlet valve 11 is connected with gas source pipe 13.

[0028] A tee joint 16 is connected to the side port of the tee connection pipe 14, one end of the tee joint 16 is connected to the pressure relief valve 12, and the other end of the tee joint 16 is connected to the air inlet valve 11.

[0029] The upper part of the connecting seat 21 is above the shaft sleeve nut 22, the middle and lower part of the connecting seat 21 is embedded in the middle part of the shaft sleeve nut 22, and the two are detachably connected through a locking member; the locking member is a locking bolt 24.

[0030] The tee connection pipe 14 and the connecting seat 21 are connected through a threaded structure.

[0031] The shaft sleeve nut 22 is provided with an internal thread, and the mechanical seal 4 of the stirring kettle is provided with an external thread constituting a threaded structure with the internal thread.

[0032] A cooling water inlet end 51 is formed on one side of the mechanical seal, and a cooling water outlet end 52 is formed on the other side of the mechanical seal; the height of the cooling water inlet end 51 is lower than the height of the cooling water outlet end 52.

[0033] The bottom of the mechanical seal is connected with a blind flange 31 through a flat gasket 32, and the mechanical seal and the blind flange 31 are connected through a fastening bolt 33.

[0034] The materials of the connecting seat 21, the shaft sleeve nut 22, the blind flange 31, the locking bolt 24 and the fastening bolt 33 can be selected as carbon steel; the material of the O-ring 23 can be selected as nitrile rubber; the flat gasket 32 can be a fluorine gasket; and the gas source pipe 13 is a PU gas source pipe 13.

[0035] In specific use:

[0036] The tee connection pipe 14 is threadedly connected to the middle part of the connecting seat 21, the middle and lower part of the connecting seat 21 passes through the shaft sleeve nut 22 and the O-ring 23, and as the shaft sleeve nut 22 is tightened, the O-ring 23 is tightly pressed on the taper of the shaft sleeve nut 22, and at the same time, the inner ring edge of the O-ring 23 is tightly attached to the cylindrical outer circumferential surface of the connecting seat 21, thereby playing a sealing role, and then the connecting seat 21 and the shaft sleeve nut 22 are locked through the locking bolt 24 to avoid the connecting seat 21 from being knocked off after the mechanical seal is charged;

[0037] The fastening bolt 33 fastens and locks the blind flange 31 and the flat gasket 32 on the flange at the bottom of the mechanical seal 4 of the stirring kettle; after assembly is completed, pressure test is performed according to the site working condition pressure and the kettle mechanical seal test specification requirements.

[0038] The pressure testing principle of the local sealing pressure testing device is as follows: the PU gas source pipe 13 is connected with the compressed air in the workshop, the air inlet valve 11 is opened, the compressed air is charged to the required pressure, the compressed air enters the inside of each sealing point such as the friction pair and the sealing ring of the mechanical seal 4 of the stirred tank through the connecting seat 21 and the shaft sleeve, then the air inlet valve 11 is closed to maintain the pressure, and then the pressure gauge 15 is observed, if the pressure does not decrease, it indicates that there is no leakage, if the pressure decreases, it indicates that there is leakage, then the leakage needs to be disassembled and inspected to determine the cause of the pressure exceeding the spring force of the spring in the mechanical seal 4 or the tightness of the sealing point and the sealing surface.

[0039] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A machine seal pressure testing device for a pot of a polycarbosilane production line, the machine seal pressure testing device being installed at a mechanical seal of a stirred pot, characterized by: The structure comprises a shaft sleeve nut connected with the mechanical seal of the stirring kettle through an O-shaped ring, an upper end of the shaft sleeve nut is provided with a connecting seat, the connecting seat is provided with a tee joint pipe inserted into the connecting seat, a top port of the tee joint pipe is provided with a pressure gauge, side ports of the tee joint pipe are respectively provided with a pressure relief valve and an air inlet valve, and the other end of the air inlet valve is connected with an air source pipe.

2. The machine seal pressure testing device for a polymeric polysilane production line reactor according to claim 1, characterized in that: A tee joint is connected at the side port of the tee joint pipe, one end of the tee joint is connected with the pressure relief valve, and the other end of the tee joint is connected with the air inlet valve.

3. The machine seal pressure testing device for a polymeric polysilane production line reactor according to claim 1, characterized in that: The upper end of the connecting seat is located above the shaft sleeve nut, the middle and lower parts of the connecting seat are embedded into the middle part of the shaft sleeve nut, and the connecting seat and the shaft sleeve nut are detachably connected through locking pieces.

4. The machine seal pressure testing device for a polymeric polysilane production line reactor according to claim 3, characterized in that: The locking pieces are locking bolts.

5. The machine seal pressure testing device for a polymeric polysilane production line reactor according to claim 1, characterized in that: The tee joint pipe and the connecting seat are connected through a threaded structure.

6. A machine seal pressure testing device for use in a polymeric silane production line according to claim 1, characterized in that: An inner thread is arranged on the shaft sleeve nut, and an outer thread which forms a threaded structure with the inner thread is arranged at the mechanical seal of the stirring kettle.

7. The machine seal pressure testing device for a polymeric polysilane production line reactor according to claim 1, characterized in that: A cooling water inlet end is formed at one side of the mechanical seal, and a cooling water outlet end is formed at the other side of the mechanical seal.

8. The machine seal pressure testing device for a polymeric polysilane production line reactor according to claim 7, characterized in that: The height of the cooling water inlet end is lower than the height of the cooling water outlet end.

9. The machine seal pressure testing device for a polymeric polysilane production line reactor according to claim 1, characterized in that: A blind flange is connected to the bottom of the mechanical seal through a flat gasket, and the mechanical seal and the blind flange are connected through fastening bolts.

Images