Vacuum pump cooler for vacuum pump system

Abstract

The utility model provides a vacuum pump cooler for a vacuum pump system. The vacuum pump cooler comprises a heat exchanger, an industrial water supply pipeline, a closed water supply pipeline, a closed water return system, an industrial water recovery system, an industrial water source and a closed water source, one end of the heat exchanger is connected with the separator, one end of the heat exchanger is connected with the vacuum pump body, one end of the industrial water supply pipeline is connected with the industrial water source, the other end of the industrial water supply pipeline is connected with the other end of the heat exchanger, and the closed water supply pipeline is connected with the closed water source. The other end of the closed water supply pipeline is connected with the other end of the heat exchanger, and the closed water return system and the industrial water recovery system are both connected with the other end of the heat exchanger. The vacuum cooling pump solves the problem of poor cooling effect of the vacuum cooling pump in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum pump cooling, in particular to a vacuum pump cooler used in a vacuum pump system. Background Art

[0002] During the actual operation of the unit, in order to control the economy, the low-pressure condenser back pressure is generally controlled to be close to the blocking back pressure of about 6kPa, and the corresponding saturation temperature is 36.18℃, and the vacuum pump inlet pressure must be lower than the unit back pressure. Therefore, the working fluid temperature in the vacuum pump must be lower than 36.18℃ to achieve a good output condition. If the temperature is higher and the output does not meet the requirements, it may be necessary to add a vacuum pump to operate.

[0003] The pressure at the suction port of the vacuum pump is very low. If the temperature of the working fluid of the vacuum pump is higher, the water will easily vaporize, causing the water ring in the pump to be destroyed. At the same time, its own vaporization reduces the normal non-condensable gas space, resulting in a decrease in the vacuum pump's suction volume. Therefore, the output decreases, and even reaches a saturated vaporization state, causing the vacuum pump to have no output at all.

[0004] At this time, measures need to be taken to reduce the temperature of the vacuum pump working fluid. For example, regularly clean the cooler or filter or take measures to reduce the cooling water. However, the cooling effect of the vacuum pump is not good, resulting in reduced working efficiency of the vacuum pump. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a vacuum pump cooler for a vacuum pump system. The utility model solves the problem of poor cooling effect of vacuum pumps in the prior art.

[0006] To achieve the above purpose, the utility model provides the following solutions:

[0007] A vacuum pump cooler for a vacuum pump system, comprising:

[0008] Heat exchangers, industrial water supply pipelines, closed water supply pipelines, closed water return systems, industrial water recovery systems, industrial water sources and closed water sources;

[0009] One end of the heat exchanger is connected to the separator, one end of the heat exchanger is connected to the vacuum pump body, one end of the industrial water supply pipeline is connected to the industrial water source, the other end of the industrial water supply pipeline is connected to the other end of the heat exchanger, the closed water supply pipeline is connected to the closed water source, the other end of the closed water supply pipeline is connected to the other end of the heat exchanger, and the closed water return system and the industrial water recovery system are both connected to the other end of the heat exchanger.

[0010] Preferably, the closed water supply pipeline, the separator, the vacuum pump body, the heat exchanger and the closed water return system form a complete water circuit.

[0011] Preferably, the industrial water supply pipeline, the separator, the vacuum pump body, the heat exchanger and the industrial water recovery system form a complete water circuit.

[0012] Preferably, one end of the heat exchanger is connected to the separator through a water supply pipe.

[0013] Preferably, one end of the heat exchanger is connected to the vacuum pump body through a water return pipe.

[0014] Preferably, a check valve is installed on the water supply pipe.

[0015] Preferably, two stop valves are installed on the return water pipe.

[0016] Preferably, it also includes:

[0017] a first manual door, a second manual door, a third manual door and a fourth manual door;

[0018] The first manual door, the second manual door, the third manual door and the fourth manual door are respectively arranged on the pipelines of the industrial water supply pipeline, the closed water supply pipeline, the closed water return system and the industrial water recovery system;

[0019] The first manual door, the second manual door, the third manual door and the fourth manual door are all used to isolate closed water or industrial water flowing in the pipeline.

[0020] According to the specific embodiments provided by the utility model, the utility model discloses the following technical effects:

[0021] The utility model provides a vacuum pump cooler for a vacuum pump system, comprising: a heat exchanger, an industrial water supply pipeline, a closed water supply pipeline, a closed water return system, an industrial water recovery system, an industrial water source and a closed water source; one end of the heat exchanger is connected to the separator, one end of the heat exchanger is connected to the vacuum pump body, one end of the industrial water supply pipeline is connected to the industrial water source, the other end of the industrial water supply pipeline is connected to the other end of the heat exchanger, the closed water supply pipeline is connected to the closed water source, the other end of the closed water supply pipeline is connected to the other end of the heat exchanger, and the closed water return system and the industrial water recovery system are both connected to the other end of the heat exchanger. The utility model improves the vacuum pump cooler, increases the industrial water supply, reduces the temperature of the vacuum pump working fluid, improves the working efficiency of the vacuum pump, reduces the back pressure of the unit, and achieves the purpose of energy saving and consumption reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 A schematic structural diagram of a vacuum pump cooler for a vacuum pump system provided in an embodiment of the utility model;

[0024] Figure 2 A schematic diagram of a water circuit of a vacuum pump cooler for a vacuum pump system provided in an embodiment of the utility model.

[0025] Description of reference numerals:

[0026] 1-heat exchanger, 2-industrial water supply pipeline, 3-closed water supply pipeline, 4-industrial water recovery system, 5-closed water return system, 6-vacuum pump system. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The utility model aims to provide a vacuum pump cooler for a vacuum pump system. The utility model solves the problem of poor cooling effect of vacuum pumps in the prior art.

[0029] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] like Figure 1 As shown, the utility model provides a vacuum pump cooler for a vacuum pump system, the vacuum pump system 6 comprises: a vacuum pump body, a separator, a first water supply circuit, a second water supply circuit, the first water supply circuit and the second water supply circuit are connected to the separator, the separator is connected to the vacuum pump, and the vacuum pump cooler comprises:

[0031] Heat exchanger 1, industrial water supply pipeline 2, closed water supply pipeline 3, closed water return system 5, industrial water recovery system 4, industrial water source and closed water source;

[0032] One end of the heat exchanger 1 is connected to the separator, one end of the heat exchanger is connected to the vacuum pump body, one end of the industrial water supply pipeline 2 is connected to the industrial water source, the other end of the industrial water supply pipeline is connected to the other end of the heat exchanger 1, the closed water supply pipeline 3 is connected to the closed water source, the other end of the closed water supply pipeline 3 is connected to the other end of the heat exchanger 1, and the closed water return system 5 and the industrial water recovery system 4 are both connected to the other end of the heat exchanger 1.

[0033] Specifically, the function of the vacuum pump system 6 is as follows: when the unit is started, the vacuum pump is used to extract the air and water in the steam and water pipes and the heaters, and to establish a certain vacuum on the steam side of the condenser to speed up the startup and avoid steam-water shock.

[0034] ② During normal operation, the vacuum pump promptly extracts the non-condensable gas leaking into the condenser and the vacuum system to maintain the vacuum in the condenser.

[0035] The role of the working fluid in the vacuum pump system 6: The working fluid can play a role in the formation of the liquid ring, which is a very important step in the process of exhausting gas during the operation of the water ring pump. In addition, it can also absorb the heat generated by the gas during use, thereby playing a good cooling role for both the gas and the pump. The working fluid replenishment water source is demineralized water and condensed water. At the same time, in order to prevent the working fluid temperature from being too high, cooling water is required for cooling. The cooling water is designed to be closed water, but when the closed water temperature rises in summer, the temperature of the vacuum pump working fluid will rise, affecting the efficiency of the vacuum pump, the back pressure of the unit will increase, and the economy will decrease.

[0036] Specifically, the working process and principle of the vacuum pump system 6: The working principle of the water ring vacuum pump is to achieve the process of suction, compression and exhaust through the change of the volume of the pump chamber. It has an eccentric rotor with fixed blades. When the rotor rotates, the working fluid is thrown to the stator wall to form a liquid ring concentric with the stator. The liquid ring and the rotor blades together constitute a variable volume rotary variable volume vacuum pump. When the impeller rotates, the volume of the small cavity changes from small to large, and is connected to the suction port on the end face, at which time the gas is sucked in; when the suction is completed, the small cavity is isolated from the suction port; when the impeller continues to rotate, the small cavity changes from large to small, so that the gas is compressed; when the small cavity is connected to the exhaust port, the gas is discharged out of the pump. In normal operation, the vacuum pump promptly extracts the non-condensable gas leaked into the condenser and the vacuum system to maintain the vacuum of the condenser. The working fluid lost in the pump absorbs the heat generated by the gas, thereby playing a good cooling role for both the gas and the pump.

[0037] Further, such as Figure 2 As shown, the closed water supply pipeline 3 from the condenser, the separator, the vacuum pump body, the heat exchanger 1 and the closed water return system 5 form a complete water circuit.

[0038] Furthermore, the industrial water supply pipeline 2, the separator, the vacuum pump body, the heat exchanger 1 and the industrial water recovery system 4 constitute a complete water circuit.

[0039] Specifically, industrial water is selected to be mixed with water from the unit drainage trough and connected to the vacuum pump working fluid cooling water and an isolation door is installed. The water intake point is the nearest pipeline, which is laid along the hot air curtain heating pipeline of the boiler room and installed using existing supports and hangers; the industrial water return of the vacuum pump is laid along the heating pipeline and the fire-fighting pipeline, and after passing through the boiler plant, it is buried underground at Laohutou through the drainage recovery room of the heating station, and after passing through Changle Road, it is connected with the mechanical acceleration clarification tank to the auxiliary machine cooling water pump front pool water supply pipeline.

[0040] Furthermore, one end of the heat exchanger is connected to the separator through a water supply pipe.

[0041] Furthermore, one end of the heat exchanger is connected to the vacuum pump body through a return water pipe.

[0042] Furthermore, it also includes:

[0043] a first manual door, a second manual door, a third manual door and a fourth manual door;

[0044] The first manual door, the second manual door, the third manual door and the fourth manual door are respectively arranged on the pipelines of the industrial water supply pipeline, the closed water supply pipeline, the closed water return system and the industrial water recovery system;

[0045] The first manual door, the second manual door, the third manual door and the fourth manual door are all used to isolate closed water or industrial water flowing in the pipeline.

[0046] Specifically, the closest distance is adopted to install the connecting water pipe, from the industrial water of #1 and #2 boilers to the opening in front of the mixing water regulating valve of the unit drainage tank, and the pipeline is laid along the air curtain heating water pipe of the boiler room, and finally passes through the steam turbine and boiler isolation wall to reach the vacuum pump. To prevent the closed water from flowing into the industrial water and causing the closed water pressure to drop, the cooling water of the vacuum pump working fluid cooler is switched from closed water to industrial water, and the closed water supply and return water stop valve is kept closed.

[0047] The beneficial effects of the utility model are as follows:

[0048] The utility model uses the added industrial water and the original closed water as cooling water for the working fluid, removes part of the heat of the working fluid by heat exchange, reduces the temperature of the working fluid of the vacuum pump, improves the working efficiency of the vacuum pump, reduces the back pressure of the unit, and achieves the purpose of energy saving and consumption reduction.

[0049] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0050] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. At the same time, for those skilled in the art, according to the ideas of the utility model, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the utility model.

Claims

1. A vacuum pump cooler for a vacuum pump system, the vacuum pump system comprising: A vacuum pump body, a separator, a first water supply circuit, and a second water supply circuit, wherein the first water supply circuit and the second water supply circuit are connected to the separator, and the separator is connected to the vacuum pump, and is characterized in that it comprises: Heat exchangers, industrial water supply pipelines, closed water supply pipelines, closed water return systems, industrial water recovery systems, industrial water sources and closed water sources; One end of the heat exchanger is connected to the separator, one end of the heat exchanger is connected to the vacuum pump body, one end of the industrial water supply pipeline is connected to the industrial water source, the other end of the industrial water supply pipeline is connected to the other end of the heat exchanger, the closed water supply pipeline is connected to the closed water source, the other end of the closed water supply pipeline is connected to the other end of the heat exchanger, and the closed water return system and the industrial water recovery system are both connected to the other end of the heat exchanger.

2. A vacuum pump cooler for a vacuum pump system according to claim 1, characterized in that: The closed water supply pipeline, the separator, the vacuum pump body, the heat exchanger and the closed water return system form a complete water circuit.

3. A vacuum pump cooler for a vacuum pump system according to claim 1, characterized in that: The industrial water supply pipeline, separator, vacuum pump body, heat exchanger and industrial water recovery system form a complete water circuit.

4. A vacuum pump cooler for a vacuum pump system according to claim 1, characterized in that: One end of the heat exchanger is connected to the separator through a water supply pipeline.

5. The vacuum pump cooler for a vacuum pump system according to claim 1, characterized in that: One end of the heat exchanger is connected to the vacuum pump body through a water return pipe.

6. A vacuum pump cooler for a vacuum pump system according to claim 1, characterized in that: Also includes: a first manual door, a second manual door, a third manual door and a fourth manual door; The first manual door, the second manual door, the third manual door and the fourth manual door are respectively arranged on the pipelines of the industrial water supply pipeline, the closed water supply pipeline, the closed water return system and the industrial water recovery system; The first manual door, the second manual door, the third manual door and the fourth manual door are all used to isolate closed water or industrial water flowing in the pipeline.

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