A vacuum pump testing device and performance testing equipment

Abstract

The utility model discloses a kind of vacuum pump testing device and performance testing equipment, vacuum pump testing device includes intercommunication first connecting pipe, negative pressure test pipe, second connecting pipe and flow test pipe, the first connecting pipe is connected with the one end of negative pressure test pipe, the other end of negative pressure test pipe is connected with the one end of second connecting pipe by first valve, the other end of second connecting pipe is connected with flow test pipe, the first valve can adjust opening degree, the one end of the first connecting pipe away from negative pressure test pipe is used to connect vacuum pump, negative pressure pressure sensor for detecting vacuum degree of vacuum pump is provided on the negative pressure test pipe, inlet pressure sensor for detecting pressure value and temperature sensor for detecting temperature value are provided on the flow test pipe.The vacuum pump testing device not only realizes high-precision detection to vacuum pump flow and pressure, but also has the advantages of simple structure, low installation requirement, short manufacturing cycle, etc.

Description

Technical Field

[0001] This utility model relates to the field of vacuum pump performance testing technology, and in particular to a vacuum pump testing device and performance testing equipment. Background Technology

[0002] In the papermaking industry, a vacuum pump is used to evacuate air from the rollers of a folding machine to achieve paper adsorption. The vacuum pump's airflow rate, gas pressure, and other parameters must be strictly matched with the specifications of the folding machine and the actual operating conditions. If the parameters are mismatched, it may cause the vacuum pump to surge or the air passage to become blocked, or even lead to malfunctions in the folding machine and production interruptions, directly affecting product quality and production efficiency.

[0003] Therefore, before leaving the factory, vacuum pumps need to undergo precise testing of their operating performance, such as flow rate and pressure, to ensure they meet the requirements of practical applications. However, in existing technologies, flow rate monitoring typically uses flow meters. This testing method not only cannot detect the pressure of the vacuum pump, but it is also costly, has stringent installation requirements, and suffers from long procurement cycles. Utility Model Content

[0004] The purpose of this invention is to provide a vacuum pump testing device and performance testing equipment. This testing device not only achieves high-precision detection of vacuum pump flow and pressure, but also has the advantages of simple structure, low installation requirements, and short manufacturing cycle.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A vacuum pump testing device includes a first connecting pipe, a negative pressure testing pipe, a second connecting pipe, and a flow testing pipe connected in series. One end of the first connecting pipe is connected to the negative pressure testing pipe, and the other end of the negative pressure testing pipe is connected to one end of the second connecting pipe via a first valve. The other end of the second connecting pipe is connected to the flow testing pipe. The first valve is adjustable in opening. The end of the first connecting pipe away from the negative pressure testing pipe is used to connect to a vacuum pump. The negative pressure testing pipe is equipped with a negative pressure sensor for detecting the vacuum level of the vacuum pump. The flow testing pipe is equipped with an inlet pressure sensor for detecting pressure values ​​and a temperature sensor for detecting temperature values.

[0007] In one embodiment, the first connecting pipe of the vacuum pump testing device is detachably provided with a first pipe connector at the end away from the negative pressure testing pipe, and the first pipe connector is used to detachably connect the first connecting pipe to the vacuum pump.

[0008] In one embodiment, the first connecting pipe and the negative pressure test pipe of the vacuum pump testing device are detachably connected via a second pipe connector.

[0009] In one embodiment, the second connecting pipe and the flow test pipe of the vacuum pump testing device are connected by a flange.

[0010] In one embodiment, the vacuum pump testing device has a first mounting base on the negative pressure test tube, and the negative pressure sensor is mounted on the first mounting base.

[0011] In one embodiment, a second mounting base is provided on the flow test tube of the vacuum pump testing device, and the inlet pressure sensor is mounted on the second mounting base.

[0012] In one embodiment, the temperature sensor of the vacuum pump testing device is mounted at the inlet of the flow test tube via a cable tie.

[0013] In one embodiment, the first valve of the vacuum pump testing device is a butterfly valve.

[0014] A performance testing device includes: a vacuum pump testing apparatus and a vacuum pump.

[0015] In one embodiment, the vacuum pump of the performance testing equipment is an air-suspended vacuum pump.

[0016] Compared with the prior art, the beneficial effects of this utility model include at least the following:

[0017] This application provides a vacuum pump testing device. This device simulates the total adsorption area of ​​a paper folding machine by adjusting the opening of a first valve. Inlet pressure and temperature sensors on the flow test tube record pressure and temperature values, and the current gas flow rate of the vacuum pump is calculated. Simultaneously, a negative pressure sensor on the negative pressure test tube records the current negative pressure value. By adjusting the speed of the vacuum pump and the opening of the first valve, various data tables are obtained, and a performance curve of the equipment is plotted for matching different devices. This vacuum pump testing device not only enables the detection of the flow rate and pressure values ​​of the vacuum pump but also has advantages such as simple structure, low installation requirements, and short manufacturing cycle.

[0018] The vacuum pump testing device also features a detachable first connecting pipe and a first pipe connector, allowing for the replacement of different specifications of the first connecting pipe or the first pipe connector depending on the vacuum pump with different pipe diameter interfaces, thus improving the applicability and utilization of the testing device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the vacuum pump testing device according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the vacuum pump testing device according to another perspective of an embodiment of the present invention;

[0021] In the picture:

[0022] 1. First pipe connector; 2. First connecting pipe; 3. Second pipe connector; 4. Negative pressure sensor; 5. Negative pressure test tube; 6. First valve; 7. Second connecting pipe; 8. Flow test tube; 9. Inlet pressure sensor; 10. Temperature sensor; 11. First mounting base; 12. Second mounting base. Detailed Implementation

[0023] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0024] The terms used to describe position and direction in this utility model are illustrated with the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this utility model.

[0025] like Figure 1 As shown, an embodiment of this application provides a vacuum pump testing device, including a first connecting pipe 2, a negative pressure testing pipe 5, a second connecting pipe 7, and a flow testing pipe 8 that are connected in series. The first connecting pipe 2, the negative pressure testing pipe 5, the second connecting pipe 7, and the flow testing pipe 8 can all be hollow structures.

[0026] The first connecting pipe 2 is connected to one end of the negative pressure test pipe 5. The other end of the negative pressure test pipe 5 is connected to one end of the second connecting pipe 7 through the first valve 6. The other end of the second connecting pipe 7 is connected to the flow test pipe 8. The first valve 6 can adjust the opening degree. The end of the first connecting pipe 2 away from the negative pressure test pipe 5 is used to connect to a vacuum pump. The negative pressure test pipe 5 is provided with a negative pressure sensor 4 for detecting the vacuum degree of the vacuum pump. The flow test pipe 8 is provided with an inlet pressure sensor 9 for detecting the pressure value and a temperature sensor 10 for detecting the temperature value.

[0027] Specifically, the first connecting pipe 2, negative pressure test pipe 5, second connecting pipe 7, and flow test pipe 8 are connected sequentially, with negative pressure test pipe 5 and second connecting pipe 7 connected via first valve 6. The first connecting pipe 2 is connected to the vacuum pump. By adjusting the opening of first valve 6, the total adsorption area of ​​the paper folding machine is simulated. The inlet pressure sensor 9 and temperature sensor 10 on flow test pipe 8 record the pressure and temperature values, and the current gas flow rate of the vacuum pump is calculated using Bernoulli's equation. Simultaneously, the current negative pressure value is recorded by negative pressure sensor 4 on negative pressure test pipe 5. By adjusting the speed of the vacuum pump and the opening of first valve 6, various data tables are obtained, and equipment performance curves are plotted to match different equipment.

[0028] In the above structure, the adsorption area of ​​different folding machines is simulated by setting the first valve 6. The pressure and temperature values ​​are recorded and detected by setting the inlet pressure sensor 9 and temperature sensor 10 on the flow test tube 8. A negative pressure sensor 4 is also set on the negative pressure test tube 5 to record and detect the negative pressure value. This vacuum pump testing device not only detects the flow and pressure values ​​of the vacuum pump, but also has advantages such as simple structure, low installation requirements, and short manufacturing cycle.

[0029] like Figure 1 As shown, in one embodiment, the first connecting pipe 2 of the vacuum pump testing device has a detachable first pipe connector 1 at the end furthest from the negative pressure testing pipe 5. The first pipe connector 1 is used to detachably connect the first connecting pipe 2 to the vacuum pump. The first pipe connector 1 is first installed on the first connecting pipe 2 or on the vacuum pump interface. When the first connecting pipe 2 and the vacuum pump interface are mated together, the first pipe connector 1 connects and locks the first connecting pipe 2 and the vacuum pump interface. This arrangement not only facilitates the connection between the first connecting pipe 2 and the vacuum pump, but also allows for the selection of the first pipe connector 1 according to different pipe diameter interfaces of the vacuum pump, improving the applicability of the testing device.

[0030] like Figure 1 As shown, in one embodiment, the first connecting pipe 2 and the negative pressure test pipe 5 of the vacuum pump testing device are detachably connected via a second pipe connector 3. The second pipe is first installed on the interface of the first connecting pipe 2 or the negative pressure test pipe 5. When the first connecting pipe 2 and the negative pressure test pipe 5 are mated together, the second pipe connector 3 connects and locks the first connecting pipe 2 and the negative pressure test pipe 5. The second pipe connector 3 not only facilitates the connection between the first connecting pipe and the negative pressure test pipe 5, but also facilitates the disassembly of the first connecting pipe 2. Furthermore, different specifications of the second connecting pipe 7 can be replaced according to different pipe diameter interfaces of the vacuum pump, improving the applicability of the testing device.

[0031] like Figure 1As shown, in one embodiment, the second connecting pipe 7 and the flow test pipe 8 of the vacuum pump testing device are connected by a flange. Connecting the second connecting pipe 7 and the flow test pipe 8 via a flange improves the connection strength and stability between the second connecting pipe 7 and the measuring test pipe, ensuring that the testing device will not experience loosening or other issues affecting testing accuracy during the testing process.

[0032] like Figure 2 As shown, in one embodiment, the vacuum pump testing device has a first mounting base 11 on the negative pressure test tube 5, which communicates with the inner cavity of the negative pressure test tube 5. The negative pressure sensor 4 is mounted on the first mounting base 11. The first mounting base 11 facilitates the installation of the negative pressure sensor 4, improves the stability of the installation of the negative pressure sensor 4, and thus improves the accuracy of negative pressure detection.

[0033] like Figure 2 As shown, in one embodiment, a second mounting base 12 is provided on the flow test tube 8 of the vacuum pump testing device. The second mounting base 12 communicates with the inner cavity of the flow test tube 8, and the inlet pressure sensor 9 is mounted on the second mounting base 12. The provision of the second mounting base 12 facilitates the installation of the inlet pressure sensor 9, improves the stability of the installation of the inlet pressure sensor 9, and thus improves the pressure detection accuracy.

[0034] like Figure 1 As shown, in one embodiment, the temperature sensor 10 of the vacuum pump testing device is installed at the inlet of the flow test tube 8 using a cable tie. The cable tie not only improves the ease of installation of the temperature sensor 10 but also facilitates its removal.

[0035] like Figure 1 As shown, in one embodiment, the first valve 6 of the vacuum pump testing device is a butterfly valve. This butterfly valve not only offers superior adjustment performance and adaptability, but also features a compact structure, making it easy to install and maintain.

[0036] like Figure 1 As shown, embodiments of this application also provide a performance testing device, including a vacuum pump testing apparatus and a vacuum pump. The vacuum pump testing apparatus is used to detect the flow rate and pressure of the vacuum pump, thereby improving the compatibility of the vacuum pump with folding machines of different specifications.

[0037] like Figure 1 As shown, in one embodiment, the vacuum pump of the performance testing equipment is an air-suspended vacuum pump, which can be of a known structure. This vacuum pump testing device also enables monitoring of the flow rate and pressure of the air-suspended vacuum pump, improving the applicability of the testing device.

[0038] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention, and all such changes should fall within the protection scope of the claims of the present invention.

Claims

1. A vacuum pump testing device, characterized in that, The device includes a first connecting pipe (2), a negative pressure test pipe (5), a second connecting pipe (7), and a flow test pipe (8) that are connected in series. The first connecting pipe (2) is connected to one end of the negative pressure test pipe (5). The other end of the negative pressure test pipe (5) is connected to one end of the second connecting pipe (7) through a first valve (6). The other end of the second connecting pipe (7) is connected to the flow test pipe (8). The first valve (6) can adjust the opening degree. The end of the first connecting pipe (2) away from the negative pressure test pipe (5) is used to connect to a vacuum pump. The negative pressure test pipe (5) is equipped with a negative pressure sensor (4) for detecting the vacuum degree of the vacuum pump. The flow test pipe (8) is equipped with an inlet pressure sensor (9) for detecting the pressure value and a temperature sensor (10) for detecting the temperature value.

2. The vacuum pump testing device according to claim 1, characterized in that, The first connecting tube (2) is detachably provided with a first pipe connector (1) at the end away from the negative pressure test tube (5). The first pipe connector (1) is used to detachably connect the first connecting tube (2) to the vacuum pump.

3. The vacuum pump testing device according to claim 1, characterized in that, The first connecting pipe (2) and the negative pressure test pipe (5) are detachably connected via the second pipe connector (3).

4. The vacuum pump testing device according to claim 1, characterized in that, The second connecting pipe (7) and the flow test pipe (8) are connected by a flange.

5. The vacuum pump testing device according to claim 1, characterized in that, The negative pressure test tube (5) is provided with a first mounting base (11), and the negative pressure sensor (4) is mounted on the first mounting base (11).

6. The vacuum pump testing device according to claim 1, characterized in that, The flow test tube (8) is provided with a second mounting base (12), and the inlet pressure sensor (9) is mounted on the second mounting base (12).

7. The vacuum pump testing device according to claim 1, characterized in that, The temperature sensor (10) is installed at the inlet of the flow test tube (8) by a cable tie.

8. The vacuum pump testing device according to claim 1, characterized in that, The first valve (6) is a butterfly valve.

9. A performance testing device, characterized in that, include: The vacuum pump testing apparatus as described in any one of claims 1-8; Vacuum pump.

10. The performance testing equipment according to claim 9, characterized in that, The vacuum pump is an air-suspended vacuum pump.

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