A biphenyl addition system

Abstract

The utility model discloses a diphenyl adding system, including diphenyl adding pipe joint, diphenyl storage jar and liquid adding pump, diphenyl adding pipe joint is connected in diphenyl stove, and the first stop valve is installed on diphenyl adding pipe joint, and diphenyl storage jar is equipped with the output pipe mouth, and the output pipe mouth pipeline is connected in the import end of liquid adding pump, and the outlet end of liquid adding pump and diphenyl adding pipe joint form the diphenyl delivery pipeline, and the first check valve is installed on diphenyl delivery pipeline, and the first check valve one -way opens, and the opening direction of first check valve is set as the direction from the liquid adding pump to diphenyl adding pipe joint, the utility model discloses utilize the first check valve to block the high temperature material of diphenyl stove opening time's external spout, and the first check valve can be opened under the condition of the booster of liquid adding pump end, to satisfy the purpose of adding diphenyl, the utility model discloses can realize the feeding operation under the non -stop state of diphenyl stove, and this will not lead to production line production, and the maintenance cost is reduced to play the remarkable role.

Description

Technical Field

[0001] This utility model relates to the field of textile equipment technology, and more specifically, to a biphenyl addition system. Background Technology

[0002] A biphenyl furnace is a piece of equipment used in the textile industry to provide the heat required for spinning in the spinning box. Biphenyl is the heat medium in the furnace, and it is consumed during operation, affecting its normal operation. Therefore, biphenyl needs to be added once the consumption reaches a set level. Because the furnace operates at high temperatures and 0.1 MPa pressure, existing systems require biphenyl to be added only when the furnace is shut down and the pressure reduced (otherwise, high-temperature, high-pressure substances will be ejected, posing a safety risk). However, shutting down the furnace inevitably leads to the shutdown of the entire spinning production line, causing significant economic losses to the company. Therefore, exploring and designing a system for adding biphenyl without shutting down the furnace is an urgent need for enterprises. Utility Model Content

[0003] The purpose of this invention is to address the needs of the prior art and provide a biphenyl addition system. This invention utilizes a first check valve to prevent the high-temperature substance from spraying out when the biphenyl furnace is opened. The first check valve can be opened under pressure at the liquid pump end to meet the purpose of adding biphenyl. This invention can realize the feeding operation of the biphenyl furnace without stopping the machine.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A biphenyl addition system is applied to a biphenyl furnace, comprising a biphenyl addition pipe connector, a biphenyl storage tank, and a liquid addition pump. The biphenyl addition pipe connector is connected to the biphenyl furnace, and a first shut-off valve is installed on the biphenyl addition pipe connector. The biphenyl storage tank has an output port, and the output port is connected to the inlet end of the liquid addition pump. A biphenyl delivery pipeline is formed between the outlet end of the liquid addition pump and the biphenyl addition pipe connector. A first check valve is installed on the biphenyl delivery pipeline. The first check valve opens in one direction, and the opening direction of the first check valve is set from the liquid addition pump toward the biphenyl addition pipe connector.

[0006] Furthermore, the first shut-off valve and the liquid injection pump are linked for control, with the first shut-off valve opening before the liquid injection pump.

[0007] Furthermore, the liquid pump is equipped with a frequency converter.

[0008] Furthermore, a filter device is installed in series between the first check valve and the biphenyl addition pipe joint.

[0009] Furthermore, it also includes a safety pipeline. The biphenyl storage tank is equipped with a reflux port. One end of the safety pipeline is connected to the reflux port, and the other end is connected to the biphenyl delivery pipeline. The connection point between the safety pipeline and the biphenyl delivery pipeline is located at the front end of the first check valve. The safety pipeline is equipped with a second check valve.

[0010] Furthermore, the set pressure of the second check valve is .MPa, the second check valve is open in one direction, and the opening direction of the second check valve is set from the biphenyl delivery pipeline towards the return port of the biphenyl storage tank.

[0011] Furthermore, a venting line is connected to the safety pipeline, and a second shut-off valve is installed on the venting line. The second shut-off valve is connected in parallel with a second check valve.

[0012] Furthermore, the biphenyl delivery pipeline is equipped with a first instrument and a second instrument, which are respectively installed at the front and rear ends of the first check valve.

[0013] The beneficial effects of this utility model are:

[0014] 1. This utility model is reasonably designed. It uses a first check valve to prevent the high-temperature material from spraying out when the biphenyl furnace is opened. The first check valve can be opened when the liquid pump is pressurized to meet the purpose of adding biphenyl. This utility model can realize the feeding operation of the biphenyl furnace without stopping the machine, which will not cause the production line to stop and will play a significant role in reducing maintenance costs.

[0015] 2. This utility model is designed with a safety pipeline. When the pressure in the biphenyl delivery pipeline is too high, the biphenyl can flow back to the biphenyl storage tank from the safety pipeline to prevent safety problems such as pipe bursts, thus realizing the safe operation of the system. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the pipe connection principle of a biphenyl addition system in this embodiment.

[0017] Reference numerals in the attached drawings: 1. Biphenyl addition pipe connector; 11. First shut-off valve; 2. Biphenyl storage tank; 21. Output port; 22. Return port; 3. Liquid addition pump; 31. Biphenyl delivery pipeline; 32. Frequency converter; 4. First check valve; 5. Safety pipeline; 51. Second check valve; 52. Drain pipeline; 52. Second shut-off valve; 521. Filter device; 6. First instrument; 7. Second instrument; 8. Biphenyl furnace; 9. Detailed Implementation

[0018] 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.

[0019] like Figure 1 As shown, a biphenyl addition system is applied to a biphenyl furnace 9, including a biphenyl addition pipe connector 1, a biphenyl storage tank 2, and a dosing pump 3. The biphenyl addition pipe connector 1 is connected to the biphenyl furnace 9 and serves as the main pipeline for adding biphenyl. Biphenyl is a heat transfer medium used in the biphenyl furnace 9, and there will be some loss during production, so it needs to be added regularly to ensure the normal operation of the biphenyl furnace. A first shut-off valve 11 is installed on the biphenyl addition pipe connector 1. The first shut-off valve 11 is normally closed during normal operation of the biphenyl furnace to ensure that the heat transfer medium inside the furnace will not spray out. It is only needed when adding biphenyl. When opened, the biphenyl storage tank 2 is equipped with an output port 21, which is connected to the inlet of the liquid addition pump 3. A biphenyl delivery pipeline 31 is formed between the outlet of the liquid addition pump 3 and the biphenyl addition pipe connector 1. The biphenyl storage tank 2 is a container for storing biphenyl. The biphenyl is pumped out by the liquid addition pump 3, and the output biphenyl is added into the biphenyl furnace through the biphenyl delivery pipeline 31 and the biphenyl addition pipe connector 1. Because the biphenyl furnace has a high temperature and a pressure of 0.1 MPa during operation, if the biphenyl addition pipe connector 1 is opened during the operation of the biphenyl furnace, a high-temperature heat transfer medium will be ejected from the biphenyl furnace. This would damage the adding pump 3 and pose a safety risk to personnel. Therefore, existing biphenyl furnaces can only add biphenyl when the furnace is shut down. However, shutting down the biphenyl furnace will cause the spinning production line to stop, which will cause significant economic losses to the enterprise. In order to realize the biphenyl adding operation without shutting down the biphenyl furnace, this utility model designs and installs a first check valve 4 on the biphenyl conveying pipeline 31. The first check valve 4 is a one-way valve that can only be opened in one direction. The opening direction of the first check valve 4 is set from the adding pump 3 toward the biphenyl adding pipe joint 1. After the first shut-off valve 11 is opened, the first check valve 4 can prevent the biphenyl from being added. To prevent the hot medium ejected from the biphenyl furnace from flowing to the liquid addition pump 3 and thus eliminate safety risks, the first check valve 4 can be pressurized and opened by the liquid addition pump 3 towards the biphenyl addition pipe joint 1. The first shut-off valve 11 and the liquid addition pump 3 are linked and controlled, with the first shut-off valve 11 opening before the liquid addition pump 3. After the first shut-off valve 11 opens, the channel into the biphenyl furnace is opened. As the liquid addition pump 3 starts operating, the biphenyl liquid is gradually pumped from the biphenyl storage tank 2 to the biphenyl delivery pipeline 31. The pressure in the biphenyl delivery pipeline 31 at the front end of the first check valve 4 will gradually increase (the front end of the first check valve 4 refers to...). Figure 1When the pressure at the front end of the first check valve 4 is greater than the pressure at the rear end of the first check valve 4 (the rear end of the first check valve 4 refers to the left end of the first check valve 4), Figure 1 When the first check valve 4 is opened (at the right end of the first check valve 4), biphenyl will enter the biphenyl furnace through the biphenyl addition pipe joint 1 to complete the biphenyl addition operation. The application of this utility model can realize the feeding operation of the biphenyl furnace without stopping the machine, which will not cause the production line to stop and will play a significant role in reducing maintenance costs.

[0020] This invention includes a frequency converter 32 installed in the liquid pump 3. The frequency converter 32 can change the speed of the motor of the liquid pump 3, so that the speed and amount of biphenyl pumping can be controlled.

[0021] This invention features a filter device 6 installed in series between the first check valve 4 and the biphenyl addition pipe joint 1. The filter device 6 ensures the purity of the added biphenyl liquid.

[0022] As the pump 3 continuously pumps biphenyl, the pressure at the front end of the first check valve 4 gradually increases. If there are problems such as local blockage in the pipeline, there is a risk of pipe bursting. To ensure the normal operation of the system, this utility model also includes a safety pipeline 5. The biphenyl storage tank 2 is equipped with a return port 22. One end of the safety pipeline 5 is connected to the return port 22, and the other end is connected to the biphenyl delivery pipeline 31. The connection point between the safety pipeline 5 and the biphenyl delivery pipeline 31 is located at the front end of the first check valve 4. The safety pipeline 5 forms a loop from the biphenyl delivery pipeline 31 to the biphenyl storage tank 2. The safety pipeline 5 is equipped with a second check valve 51. The second check valve 51 is also a one-way valve, capable of opening in one direction. The opening direction of the second check valve 51 is set from the biphenyl delivery pipeline 31 towards the return port 22 of the biphenyl storage tank 2. When the pressure in the biphenyl delivery pipeline 31 is too high, it can open the second check valve 51, allowing biphenyl to flow back into the biphenyl storage tank 2. The set pressure of the second check valve 51 is 0.3 MPa. That is, when the pressure exceeds 0.3 MPa, the second check valve 51 will be opened, and the safety pipeline 5 will form a pressure relief effect. Below 0.3 MPa is the normal pressure of the pipeline. At this time, the second check valve 51 remains closed, and biphenyl flows normally from the biphenyl delivery pipeline 31.

[0023] After biphenyl is added, the first shut-off valve 11 needs to be closed. However, there will still be pressurized residual biphenyl in the biphenyl delivery pipeline 31 (the front end of the pipeline of the first check valve 4). The presence of this part of biphenyl affects the safety of the pipeline. Therefore, the pipeline needs to be emptied in the future. To meet the above requirements, this utility model has an emptying pipeline 52 connected to the safety pipeline 5. The emptying pipeline 52 is equipped with a second shut-off valve 521. The second shut-off valve 521 is connected in parallel with the second check valve 51. The second shut-off valve 521 is normally closed and is only opened during the emptying operation. After the second shut-off valve 521 is opened, the residual biphenyl in the biphenyl delivery pipeline 31 will flow back to the biphenyl storage tank 2 through the emptying pipeline 52 and the safety pipeline 5.

[0024] This invention includes a first instrument 7 and a second instrument 8 installed in the biphenyl transmission pipeline 31. The first instrument 7 and the second instrument 8 are respectively installed at the front and rear ends of the first check valve 4. The instruments can detect pressure and temperature. The first instrument 7 and the second instrument 8 respectively display the pressure and temperature values ​​at the front and rear ends of the first check valve 4 in the biphenyl transmission pipeline 31. This will facilitate workers' observation and timely detection of system operation problems.

[0025] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A biphenyl addition system, applied to a biphenyl furnace (9), characterized in that, The system includes a biphenyl addition pipe connector (1), a biphenyl storage tank (2), and a liquid addition pump (3). The biphenyl addition pipe connector (1) is connected to a biphenyl furnace (9). A first shut-off valve (11) is installed on the biphenyl addition pipe connector (1). The biphenyl storage tank (2) is provided with an output port (21). The output port (21) is connected to the inlet end of the liquid addition pump (3). A biphenyl delivery pipeline (31) is formed between the outlet end of the liquid addition pump (3) and the biphenyl addition pipe connector (1). A first check valve (4) is installed on the biphenyl delivery pipeline (31). The first check valve (4) is open in one direction. The opening direction of the first check valve (4) is set from the liquid addition pump (3) toward the biphenyl addition pipe connector (1).

2. The biphenyl addition system according to claim 1, characterized in that, The first shut-off valve (11) and the liquid pump (3) are linked for control, and the first shut-off valve (11) opens before the liquid pump (3).

3. The biphenyl addition system according to claim 1, characterized in that, The liquid pump (3) is equipped with a frequency converter (32).

4. The biphenyl addition system according to claim 1, characterized in that, A filter device (6) is installed in series between the first check valve (4) and the biphenyl addition pipe joint (1).

5. The biphenyl addition system according to claim 1, characterized in that, It also includes a safety line (5), the biphenyl storage tank (2) is provided with a reflux port (22), one end of the safety line (5) is connected to the reflux port (22), and the other end is connected to the biphenyl delivery line (31). The connection point between the safety line (5) and the biphenyl delivery line (31) is located at the front end of the first check valve (4), and the safety line (5) is equipped with a second check valve (51).

6. The biphenyl addition system according to claim 5, characterized in that, The set pressure of the second check valve (51) is 0.3 MPa. The second check valve (51) is open in one direction. The opening direction of the second check valve (51) is set from the biphenyl delivery pipeline (31) towards the return port (22) of the biphenyl storage tank (2).

7. The biphenyl addition system according to claim 5, characterized in that, The safety pipeline (5) is connected to a venting pipeline (52), and the venting pipeline (52) is equipped with a second shut-off valve (521), which is connected in parallel with the second check valve (51).

8. The biphenyl addition system according to claim 1, characterized in that, The biphenyl delivery pipeline (31) is equipped with a first instrument (7) and a second instrument (8), which are respectively installed at the front and rear ends of the first check valve (4).

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