Sealed flushing system for BYD feeding high-pressure pump

Abstract

A sealing flushing system for a BYD feeding high-pressure pump comprises a collecting tank, a magnetic turning plate liquid level meter, a concentration sensor, a condensate water coil pipe, a liquid discharging valve, a centrifugal pump I, a pressure sensor I, a check valve I, a liquid supplementing valve, a centrifugal pump II, a pressure sensor II, a check valve II, a filter, the high-pressure pump, a backflow valve and a controller. The collecting tank is connected with the centrifugal pump I and the centrifugal pump II through pipelines, the pipeline where the centrifugal pump I is located is provided with a pressure sensor I and a check valve I, the pipeline where the centrifugal pump II is located is provided with a pressure sensor II and a check valve II, and the liquid supplementing valve is located on a liquid supplementing pipeline connected with the collecting tank. The inlet end of the high-pressure pump is provided with a filter, and the high-pressure pump is connected with the collecting tank through a backflow pipeline. An independent self-circulation system is established for the BYD feeding high-pressure pump, supply of machine pump filler flushing water is guaranteed through the self-circulation system, the centrifugal pump is used for adjusting the filler flushing pressure according to the actual working condition, and filler leakage caused by too high filler flushing water pressure is avoided.

Description

Technical Field

[0001] The utility model relates to the field of seal flushing of a BYD high-pressure feeding pump, in particular to a seal flushing system of a BYD high-pressure feeding pump. Background Art

[0002] The BYD (1,4-butynediol) feed high-pressure pump is a key piece of equipment in BDO (1,4-butanediol) production. Its function is to pressurize the BYD solution stored in an atmospheric pressure tank to 30.4 MPa and feed it into the primary BDO hydrogenation reactor for reaction. The BYD feed high-pressure pump's packing flushing water pressure is 5-8 bar, but in actual production, it can reach 10 bar, exceeding its normal packing flushing pressure. Furthermore, the BYD feed high-pressure pump's packing flushing water shares a storage tank with other seal water within the plant. This high packing flushing water pressure leads to frequent packing leaks, which contaminate the entire seal water system with BYD. This contaminated seal water, with its excessive COD content, is difficult to treat and results in BYD waste. Therefore, a seal flushing system for the BYD feed high-pressure hydrogenation pump was designed to reduce packing leakage and BYD contamination. Utility Model Content

[0003] In order to solve the defect that the existing BYD feeding high-pressure pump sealing system frequently leaks and contaminates BYD materials, the purpose of the utility model is to provide a BYD feeding high-pressure pump sealing flushing system.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a BYD feeding high-pressure pump seal flushing system, including a collection tank 1, a magnetic flap liquid level gauge 2, a concentration sensor 3, a condensate coil 4, a drain valve 5, a centrifugal pump I6, a pressure sensor I7, a check valve I8, a liquid replenishing valve 9, a centrifugal pump II10, a pressure sensor II11, a check valve II12, a filter 13, a high-pressure pump 14, a reflux valve 15, and a controller 16.

[0005] The collecting tank 1 is connected to the centrifugal pump I6 and the centrifugal pump II10 through pipelines respectively. The pipeline where the centrifugal pump I6 is located is provided with a pressure sensor I7 and a check valve I8. The pipeline where the centrifugal pump II10 is located is provided with a pressure sensor II11 and a check valve II12. The rehydration valve 9 is located on the rehydration pipeline connected to the collecting tank 1.

[0006] The inlet end of the high-pressure pump 14 is provided with a filter 13 . The high-pressure pump 14 is connected to the collection tank 1 through a reflux line. The reflux valve 15 is located on the reflux line.

[0007] The controller 16 is connected to the magnetic flap level gauge 2 , the concentration sensor 3 , the drain valve 5 , and the refill valve 9 through signal lines.

[0008] Furthermore, the collection tank 1 is provided with a magnetic flap level gauge 2.

[0009] Furthermore, the collection tank 1 is provided with a concentration sensor 3 .

[0010] Furthermore, the collection tank 1 is provided with a condensed water coil 4 .

[0011] Furthermore, the high-pressure pump 14 is a plunger pump.

[0012] Furthermore, the filter 13 is a Y-type filter.

[0013] Furthermore, the controller 16 is a programmable logic controller.

[0014] Compared with the existing BYD feeding high-pressure pump seal flushing system, the utility model has the following advantages.

[0015] The utility model provides a BYD feeding high-pressure pump seal flushing system, which establishes a separate self-circulating system for the BYD feeding high-pressure pump 14, thereby ensuring the supply of pump filler flushing water through the self-circulating system.

[0016] The utility model discloses a BYD feeding high-pressure pump seal flushing system which controls the flushing water pressure through centrifugal pumps I6 and II10. The pressure of the packing flushing can be adjusted according to the actual working conditions to avoid packing leakage caused by high flushing water pressure and waste of BYD materials.

[0017] The utility model provides a BYD feeding high-pressure pump sealing flushing system with a circulation system that adds a small filler flushing water collection tank 1 with a condensed water coil 4 inside. Circulating cooling water is introduced into the condensed water coil 4 to cool the filler cooling water in the collection tank 1 through the cooling water. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a diagram of the seal flushing system of a BYD feeding high-pressure pump in this utility model. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle", "inside", "top", "bottom end", etc., indicating positions or positional relationships, are based on the positions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention. The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, unless otherwise expressly specified or limited, the terms "mounted", "connected", and "connected" should be understood in a broad sense, for example, they can mean fixed connection, detachable connection, or integral connection; they can mean mechanical connection or electrical connection; they can mean direct connection, indirect connection through an intermediate medium, or internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] The present invention will be described in further detail below with reference to the accompanying drawings.

[0022] like Figure 1 As shown, the utility model provides a BYD feeding high-pressure pump seal flushing system, including a collection tank 1, a magnetic flap liquid level gauge 2, a concentration sensor 3, a condensate coil 4, a drain valve 5, a centrifugal pump I6, a pressure sensor I7, a check valve I8, a liquid replenishing valve 9, a centrifugal pump II10, a pressure sensor II11, a check valve II12, a filter 13, a high-pressure pump 14, a reflux valve 15, and a controller 16.

[0023] The collecting tank 1 is provided with a magnetic flap level gauge 2, a concentration sensor 3, and a condensate coil 4. The collecting tank 1 is connected to the centrifugal pump I6 and the centrifugal pump II10 through pipelines respectively. The pipeline where the centrifugal pump I6 is located is provided with a pressure sensor I7 and a check valve I8. The pipeline where the centrifugal pump II10 is located is provided with a pressure sensor II11 and a check valve II12. The rehydration valve 9 is located on the rehydration pipeline connected to the collecting tank 1.

[0024] The inlet end of the high-pressure pump 14 is provided with a filter 13 . The high-pressure pump 14 is connected to the collection tank 1 through a reflux line. The reflux valve 15 is located on the reflux line.

[0025] The controller 16 is connected to the magnetic flap level gauge 2 , the concentration sensor 3 , the drain valve 5 , and the refill valve 9 through signal lines.

[0026] The working process of the utility model is as follows: when the filler of the high-pressure pump 14 needs to be flushed, one of the centrifugal pumps I6 or II10 is turned on, and the other is on standby. The centrifugal pump provides appropriate flushing water pressure to the high-pressure pump 14, and the flushing water enters the collection tank 1 through the reflux pipeline where the reflux valve 15 is located for recycling. The condensate coil 4 cools the flushing water in the collection tank 1, and the concentration sensor 3 monitors the BYD concentration in the flushing water in real time. When the concentration exceeds the set value, the controller 16 controls the drain valve 5 to open and discharge the high-concentration flushing water to the designated storage tank for recycling and reuse. The magnetic flap level gauge 2 monitors the liquid level in the collection tank 1 in real time. When the liquid level is lower than the set value, the controller 16 controls the refill valve 9 to open and send the replenishing liquid into the collection tank 1.

[0027] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0028] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A BYD feed high-pressure pump seal flushing system, comprising a collecting tank (1), a magnetic flap level gauge (2), a concentration sensor (3), a condensate coil (4), a drain valve (5), a centrifugal pump I (6), a pressure sensor I (7), a check valve I (8), a refill valve (9), a centrifugal pump II (10), a pressure sensor II (11), a check valve II (12), a filter (13), a high-pressure pump (14), a reflux valve (15), and a controller (16), characterized in that The collecting tank (1) is connected to the centrifugal pump I (6) and the centrifugal pump II (10) through pipelines, respectively. The pipeline where the centrifugal pump I (6) is located is provided with a pressure sensor I (7) and a check valve I (8), and the pipeline where the centrifugal pump II (10) is located is provided with a pressure sensor II (11) and a check valve II (12). The refill valve (9) is located on the refill pipeline connected to the collecting tank (1); a filter (13) is provided at the inlet end of the high-pressure pump (14), the high-pressure pump (14) is connected to the collecting tank (1) through a return pipeline, and the return valve (15) is located on the return pipeline; the controller (16) is connected to the magnetic flap level gauge (2), the concentration sensor (3), the drain valve (5), and the refill valve (9) through signal lines.

2. A BYD feeding high pressure pump seal flushing system according to claim 1, characterized in that: The collection tank (1) is provided with a magnetic flap liquid level gauge (2).

3. A BYD feeding high pressure pump seal flushing system according to claim 1, characterized in that: The collection tank (1) is provided with a concentration sensor (3).

4. A BYD feeding high-pressure pump seal flushing system according to claim 1, characterized in that: The collection tank (1) is provided with a condensed water coil (4).

5. A BYD feeding high pressure pump seal flushing system according to claim 1, characterized in that: The high-pressure pump (14) is a plunger pump.

6. A BYD feeding high-pressure pump seal flushing system according to claim 1, characterized in that: The filter (13) is a Y-type filter.

7. A BYD feeding high pressure pump seal flushing system according to claim 1, characterized in that: The controller (16) is a programmable logic controller.

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