Cooler for improving vacuumizing capacity of vacuum pump

Abstract

The invention discloses a cooler capable of improving the vacuumizing capacity of a vacuum pump, and relates to the technical field of direct air cooling units, the cooler comprises a main body unit, and the main body unit comprises a vacuum pump and a vacuumizing mother pipe arranged above the vacuum pump; and the cooling unit comprises a cooling assembly arranged on the vacuumizing wood pipe, a spraying assembly arranged on the cooling assembly and a backflow assembly arranged on the cooling assembly. According to the cooler capable of improving the vacuumizing capacity of the vacuum pump, the cooling unit is arranged, steam in a gas-steam mixture extracted from the condenser is condensed and drained out through the cooler, the spraying pump, the concentric-square-shaped drainage collecting pipe and other structures on the cooling unit, condensation heat release of the steam in the water ring type vacuum pump is reduced, the working water temperature is reduced, and the vacuumizing capacity of the vacuum pump is improved. Cavitation of the vacuum pump is effectively prevented, the suction capacity of the vacuum pump is improved, the amount of pumped air is increased, and therefore the vacuum degree of the condenser is improved.

Description

Technical Field

[0001] The invention relates to the technical field of direct air cooling units, and in particular to a cooler capable of improving the vacuum pumping capacity of a vacuum pump. Background Art

[0002] A water ring vacuum pump is a vacuum pump that uses water as a working medium. It is mainly used to generate vacuum and remove gas. The vacuum of a direct air-cooled unit is usually maintained by a water ring vacuum pump. The condenser is an important component of a direct air-cooled unit. The function of the condenser is to condense steam into water so that it can be recycled. At present, the condenser in a direct air-cooled unit is generally directly connected to a water ring vacuum pump through a pipeline.

[0003] Although the traditional direct air-cooled unit has been cooled by the condenser, the ambient temperature rises in the summer, and the steam condensation efficiency in the condenser will decrease, resulting in a large amount of water vapor in the condenser cannot condense, making the gas-steam mixture in the water ring vacuum pump extraction pipe contain too much water vapor, resulting in increased flow resistance (water vapor flow resistance accounts for the vast majority), reduced flow rate, and reduced vacuum pump extraction volume; at the same time, high-temperature steam releases heat in the vacuum pump, causing the vacuum pump operating temperature to increase, blade cavitation to intensify, and reduce the vacuum pump output, which needs to be improved. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] The present invention is proposed in view of the problem that the condenser condensation efficiency of the above-mentioned existing cooler for improving the vacuum pump's vacuum pumping capacity decreases when the temperature rises in summer, resulting in a large amount of water vapor being unable to condense, resulting in a reduction in the vacuum pump's air extraction capacity.

[0006] Therefore, the purpose of the present invention is to provide a cooler that improves the vacuum pumping capacity of a vacuum pump, and its purpose is to solve the problem that when the temperature rises in summer, the condenser condensation efficiency decreases, resulting in a large amount of water vapor being unable to condense, resulting in a reduction in the vacuum pumping capacity.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising a main unit, comprising a vacuum pump, and a vacuum pumping main pipe arranged above the vacuum pump;

[0008] The cooling unit comprises a cooling component arranged on the vacuum wooden pipe, a spray component arranged on the cooling component, and a reflux component arranged on the cooling component.

[0009] As a preferred solution of the cooler for improving the vacuum pump's vacuum pumping capacity as described in the present invention, the cooling assembly includes a cooler arranged below the vacuum pumping main pipe, a left shell arranged on the cooler, a right shell arranged on the cooler, and a tangential air intake pipe arranged on the cooler and connected to the vacuum pumping main pipe.

[0010] As a preferred solution of the cooler for improving the vacuum pumping ability of the vacuum pump described in the present invention, the cooling assembly further includes a left connecting pipe arranged on the cooler and a right connecting pipe arranged on the cooler.

[0011] As a preferred solution of the cooler for improving the vacuum pump's vacuum pumping capacity as described in the present invention, wherein: the left shell is provided with a connecting air pipe connected to the vacuum pump, the first air pipe is provided with an air extraction valve, and the tangential air inlet pipe is arranged in an inclined tangential direction.

[0012] As a preferred solution of the cooler for improving the vacuum pump's vacuuming capacity as described in the present invention, the spray assembly includes a control valve arranged on the left connecting pipe, a spray pipe arranged on the left connecting pipe, and a spray pump arranged on the spray pipe.

[0013] As a preferred solution of the cooler for improving the vacuum pump's vacuuming capability as described in the present invention, the spray assembly further comprises a desalted water pipe arranged on the spray pump, and an atomizing nozzle arranged inside the cooler and connected to the left connecting pipe.

[0014] As a preferred solution of the cooler for improving the vacuum pumping capability of the vacuum pump described in the present invention, a spiral groove is arranged inside the cooler, and the spiral groove is communicated with the tangential air inlet pipe.

[0015] As a preferred solution of the cooler for improving the vacuum pumping capacity of the vacuum pump described in the present invention, the reflux component includes a manual valve arranged on the right connecting pipe, and a reflux vertical pipe arranged on the right connecting pipe.

[0016] As a preferred solution of the cooler for improving the vacuum pumping capacity of the vacuum pump described in the present invention, the reflux component also includes a meandering drain manifold arranged on the reflux vertical pipe, and a drain pipe arranged on the meandering drain manifold, and a drain device is arranged on the inner wall of the right connecting pipe.

[0017] As a preferred solution of the cooler for improving the vacuum pump's vacuum pumping capacity as described in the present invention, the vacuum pump includes a vacuum pump body arranged below the connecting air pipe, an air inlet arranged on the vacuum pump body, and an air outlet arranged on the vacuum pump body, and the air inlet is connected to the connecting air pipe.

[0018] The beneficial effects of the present invention are as follows: by setting up a cooling unit, the steam in the gas-steam mixture extracted from the condenser is condensed and drained by utilizing the cooler, spray pump, and serpentine drain manifold on the cooling unit, thereby reducing the condensation heat release of steam in the water ring vacuum pump, lowering the working water temperature, effectively preventing the cavitation of the vacuum pump, improving the suction capacity of the vacuum pump, and increasing the amount of extracted air, thereby improving the vacuum of the condenser. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a schematic structural diagram of the cooling unit of the present invention.

[0022] Figure 3 It is a schematic diagram of the structure of the cooling component and the spray component of the present invention.

[0023] Figure 4 It is a schematic diagram of the structure of the spiral groove of the present invention.

[0024] Figure 5 It is a structural schematic diagram of the main unit of the present invention.

[0025] Figure 6 For the present invention Figure 1 Enlarged view of point A in the middle. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0030] Example 1, reference Figures 1 to 3 , which is the first embodiment of the present invention, provides a cooler for improving the vacuum pump's vacuuming ability. The device includes a main unit 100, including a vacuum pump 101, and a vacuum main pipe 102 arranged above the vacuum pump 101; a cooling unit 200, including a cooling component 201 arranged on the vacuum wooden pipe, a spray component 202 arranged on the cooling component 201, and a reflux component 203 arranged on the cooling component 201.

[0031] When in use, in the prior art, the vacuum pump 101 is generally connected to the vacuum main pipe 102 and the vacuum pump 101 directly through a connecting pipe. As a result, when the temperature rises in summer, the condensation efficiency of the condenser steam in the direct air-cooled unit will decrease, resulting in a large amount of water vapor in the condenser being unable to condense, causing the gas-steam mixture in the steam extraction pipeline of the water ring vacuum pump 101 to contain too much water vapor, resulting in increased flow resistance (the flow resistance of water vapor accounts for the vast majority), reduced flow velocity, and reduced air extraction capacity of the vacuum pump 101; at the same time, high-temperature steam in the vacuum The heat released in the pump 101 causes the working temperature of the vacuum pump 101 to increase, the blade cavitation to intensify, and the output of the vacuum pump 101 to be reduced. Then, by adding a cooling component 201, in conjunction with the spray component 202 and the reflux component 203, the steam in the gas-steam mixture extracted from the condenser is condensed and discharged, thereby reducing the condensation heat release of the steam in the water ring vacuum pump 101, lowering the working water temperature, effectively preventing the cavitation of the vacuum pump 101, improving the suction capacity of the vacuum pump 101, and increasing the amount of extracted air, thereby improving the vacuum of the condenser.

[0032] Example 2, reference Figures 1 to 4, which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the cooling component 201 includes a cooler 201a arranged below the vacuum main pipe 102, a left shell 201b arranged on the cooler 201a, a right shell 201c arranged on the cooler 201a, and a tangential air inlet pipe 201d arranged on the cooler 201a and connected to the vacuum main pipe 102; wherein the left shell 201b and the right shell 201c are respectively fixedly connected to the two sides of the cooler 201a through flanges, the tangential air inlet pipe 201d is connected to the top of the outer surface of the cooler 201a, and the tangential air inlet pipe 201d is arranged on the right side of the cooler 201a, so as to increase the contact time between the steam and the spray component 202 and improve the cooling and condensation efficiency of the device.

[0033] Furthermore, the cooling assembly 201 also includes a left connecting pipe 201a-1 arranged on the cooler 201a, and a right connecting pipe 201a-2 arranged on the cooler 201a; wherein the left connecting pipe 201a-1 and the right connecting pipe 201a-2 are respectively connected to the left and right sides of the bottom of the outer surface of the cooler 201a.

[0034] Furthermore, a connecting air pipe 201b-1 connected to the vacuum pump 101 is provided on the left shell 201b, an air extraction valve 201b-2 is provided on the first air pipe, and the tangential air inlet pipe 201d is arranged in an inclined tangential direction; wherein, one end of the connecting air pipe 201b-1 is connected to the left shell 201b in the cooler 201a, and the bottom end of the connecting air pipe 201b-1 is connected to the air inlet 101b of the vacuum pump 101.

[0035] Furthermore, the spray assembly 202 includes a control valve 202a arranged on the left connecting pipe 201a-1, a spray pipe 202b arranged on the left connecting pipe 201a-1, and a spray pump 202c arranged on the spray pipe 202b; wherein the spray pipe 202b is connected to the left connecting pipe 201a-1, and the spray pipe 202b is connected to the spray pump 202c.

[0036] Furthermore, the spray assembly 202 also includes a desalted water pipe 202d arranged on the spray pump 202c, and an atomizing nozzle 202e arranged inside the cooler 201a and connected to the left connecting pipe 201a-1; wherein the cooler 201a is configured as a hybrid cooler 201a, and desalted water is selected as the cooling water. The desalted water is sprayed on the steam through the atomizing nozzle 202e through the spray pump 202c, so that the steam and the desalted water are mixed and then cooled and condensed, thereby enhancing the cooling and condensation effect of the device.

[0037] Furthermore, a spiral groove 202f is provided inside the cooler 201a, and the spiral groove 202f is connected to the tangential air inlet pipe 201d; wherein, the spiral groove 202f is opened on the inner wall of the cooler 201a, and the position where the tangential air inlet pipe 201d is connected to the cooler 201a is just in the spiral groove 202f, and then when the steam enters the cooler 201a through the vacuum main pipe 102 and the tangential inlet pipe, it will first flow along the spiral groove 202f, so that the steam rises in the cooler 201a in a spiral manner, which can not only enhance the residence time of the steam in the cooler 201a, but also enhance the effect of the steam being cooled and condensed, and through the inclined tangential setting, it can be more convenient for the steam to enter the spiral groove 202f.

[0038] When in use, the vacuum main pipe 102 guides the uncooled and condensed steam in the condenser of the direct air-cooled unit into the cooler 201a, and the mixed gas from the condenser enters from the cooler 201a along the tangent direction of the tank body, and the spray pump 202c is started to pass the desalted water through the desalted water pipe 202d, the spray pipe 202b, and the left connecting pipe 201a-1, and finally sprayed upward in the form of mist from the atomizing nozzle 202e. The steam and the desalted water are mixed and cooled and condensed, and then the reflux component 203 is used to collect and discharge the formed hydrophobic water into the condenser, thereby reducing the condensation heat release of the steam in the vacuum pump 101, lowering the working water temperature, effectively preventing the cavitation of the vacuum pump 101, improving the suction capacity of the vacuum pump 101, and increasing the amount of extracted air, thereby improving the vacuum of the condenser.

[0039] The remaining structures are the same as those of Example 1.

[0040] Example 3, reference Figures 1 to 6 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: the reflux component 203 includes a manual valve 203a arranged on the right connecting pipe 201a-2, and a reflux vertical pipe 203b arranged on the right connecting pipe 201a-2; wherein the reflux vertical pipe 203b is connected to the right connecting pipe 201a-2.

[0041] Furthermore, the reflux component 203 also includes a meandering drain manifold 203c arranged on the reflux riser 203b, and a drain pipe 203d arranged on the meandering drain manifold 203c, and a drain device 203e is arranged on the inner wall of the right connecting pipe 201a-2; wherein, the two ends of the meandering drain manifold 203c are respectively connected to the reflux riser 203b and the drain pipe 203d, and through the setting of the drain device 203e, only water can be drained but not exhaust gas in the right connecting pipe 201a-2, ensuring that steam can completely enter the vacuum pump 101 through the connecting air pipe 201b-1, thereby improving the suction capacity of the vacuum pump 101, increasing the amount of extracted air, and thus improving the vacuum of the condenser.

[0042] Further, the vacuum pump 101 includes a vacuum pump 101 body disposed below the connecting air pipe 201b-1, an air inlet 101b disposed on the vacuum pump 101 body, and an air outlet 101c disposed on the vacuum pump 101 body, and the air inlet 101b is connected to the connecting air pipe 201b-1;

[0043] When in use, when the desalted water is sprayed out in the cooler 201a, mixed with steam and cooled and condensed, the formed drain will be collected at the round drain manifold 203c through the right connecting pipe 201a-2, the drain 203e, and the reflux vertical pipe 203b, and discharged into the condenser under the action of gravity difference (as long as the water level of the condenser is controlled within the normal range, the vacuum cooler 201a will not be full of water);

[0044] Since the cooler 201a is installed on the vacuum main pipe 102 by welding, the cooler 201a can be put into operation when the vacuum pump 101 is started, and vacuum is carried out simultaneously with the condenser. When the unit is loaded, the cooling water spray of the cooler 201a is put into operation to improve the working effect of the cooler 201a. When the unit is stopped, the manual valve 203a can be closed. Since the drain water of the cooler 201a flows to the condenser, it is equivalent to realizing the normal water replenishment of the condenser during operation.

[0045] The remaining structure is the same as that of Example 2.

[0046] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0047] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0048] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A cooler for improving the vacuum pumping ability of a vacuum pump, characterized in that: include, The main unit (100) comprises a vacuum pump (101) and a vacuum pumping main pipe (102) arranged above the vacuum pump (101); The cooling unit (200) comprises a cooling component (201) arranged on the vacuum wooden pipe, a spray component (202) arranged on the cooling component (201), and a reflux component (203) arranged on the cooling component (201).

2. The cooler for improving the vacuum pumping ability of a vacuum pump according to claim 1, characterized in that: The cooling assembly (201) comprises a cooler (201a) arranged below the vacuum main pipe (102), a left shell (201b) arranged on the cooler (201a), a right shell (201c) arranged on the cooler (201a), and a tangential air intake pipe (201d) arranged on the cooler (201a) and connected to the vacuum main pipe (102).

3. The cooler for improving the vacuum pumping ability of a vacuum pump according to claim 2, characterized in that: The cooling assembly (201) further comprises a left connecting pipe (201a-1) arranged on the cooler (201a), and a right connecting pipe (201a-2) arranged on the cooler (201a).

4. The cooler for improving the vacuum pumping ability of a vacuum pump according to claim 3, characterized in that: The left housing (201b) is provided with a connecting air pipe (201b-1) connected to the vacuum pump (101), the first air pipe is provided with an air extraction valve (201b-2), and the tangential air inlet pipe (201d) is arranged in an inclined tangential direction.

5. The cooler for improving the vacuum pumping capability of a vacuum pump according to claim 4, characterized in that: The spray assembly (202) comprises a control valve (202a) arranged on the left connecting pipe (201a-1), a spray pipe (202b) arranged on the left connecting pipe (201a-1), and a spray pump (202c) arranged on the spray pipe (202b).

6. The cooler for improving the vacuum pumping capability of a vacuum pump according to claim 5, characterized in that: The spray assembly (202) further comprises a desalted water pipe (202d) arranged on the spray pump (202c), and an atomizing nozzle (202e) arranged inside the cooler (201a) and connected to the left connecting pipe (201a-1).

7. The cooler for improving the vacuum pumping capability of a vacuum pump according to claim 6, characterized in that: A spiral groove (202f) is provided inside the cooler (201a), and the spiral groove (202f) is communicated with the tangential air inlet pipe (201d).

8. The cooler for improving the vacuum pumping capability of a vacuum pump according to claim 7, characterized in that: The reflux assembly (203) comprises a manual valve (203a) arranged on the right connecting pipe (201a-2), and a reflux vertical pipe (203b) arranged on the right connecting pipe (201a-2).

9. The cooler for improving the vacuum pumping capability of a vacuum pump according to claim 8, characterized in that: The reflux assembly (203) further comprises a meandering drain manifold (203c) arranged on the reflux vertical pipe (203b), and a drainage pipe (203d) arranged on the meandering drain manifold (203c), and a drain device (203e) is arranged on the inner wall of the right connecting pipe (201a-2).

10. The cooler for improving the vacuum pumping capability of a vacuum pump according to claim 9, characterized in that: The vacuum pump (101) comprises a vacuum pump (101) body arranged below the connecting air pipe (201b-1), an air inlet (101b) arranged on the vacuum pump (101) body, and an air outlet (101c) arranged on the vacuum pump (101) body, wherein the air inlet (101b) is connected to the connecting air pipe (201b-1).

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