A steam condensate conveying device

Abstract

This utility model discloses a steam condensate conveying device, belonging to the field of steam transmission technology. It includes: a storage tank, a first condensate pump, and a second condensate pump. The storage tank is connected to the input end of the first condensate pump via a first pipe; the storage tank is connected to the input end of the second condensate pump via a second pipe; the output end of the first condensate pump is connected via a third pipe; the output end of the second condensate pump is connected via a fourth pipe; the first pipe and the fourth pipe are connected via a fifth pipe; a second regulating valve is installed on the first pipe, and a first regulating valve is installed on the fifth pipe; a third regulating valve is installed on the fourth pipe. Adding two condensate conveying pumps at the outlet of the steam condensate tank can restore the condensate tank level to normal, improve the heat exchange effect of the steam heat exchanger, and eliminate water hammer in the pipeline, ensuring the reliability of pipelines, instruments, regulating valves, and other equipment.

Description

Technical Field

[0001] This invention belongs to the field of steam transmission technology, specifically a steam condensate conveying device. Background Technology

[0002] Currently, in some domestic ethanolamine plants, some steam condensate tanks are used to deliver condensate into the condensate pipeline network by using steam pressure and controlling the flow rate through regulating valves. Due to factors such as pressure drop loss in the pipeline and pressure fluctuations in the pipeline network, the condensate in the condensate tanks often cannot be delivered normally, resulting in the condensate tanks being full, which affects the heat exchanger's heat exchange effect. Furthermore, the long-term accumulation of condensate can easily cause water hammer in the pipeline, and the severe vibration may pose a risk of pipeline tearing.

[0003] Due to various conditions, the condensate cannot be transported normally, resulting in the condensate filling the tank, the heat exchanger's heat exchange effect deteriorates, and in severe cases, water hammer occurs in the pipeline, causing excessive vibration and damage to equipment such as pipelines, instruments, and regulating valves. Utility Model Content

[0004] To solve the above problems, a steam condensate conveying device includes:

[0005] Storage tank, first condensate pump, second condensate pump;

[0006] The storage tank is connected to the input end of the first condensate pump via a first pipe;

[0007] The storage tank is connected to the input end of the second condensate pump via a second pipe;

[0008] The output end of the first condensate pump is connected via a third pipe;

[0009] The output end of the second condensate pump is connected via a fourth pipe;

[0010] The first pipe and the fourth pipe are connected by a fifth pipe;

[0011] A second regulating valve is provided on the first pipeline, and a first regulating valve is provided on the fifth pipeline;

[0012] A third regulating valve is provided on the fourth tube sweeper.

[0013] Furthermore, a fourth regulating valve is also provided on the fourth pipeline.

[0014] Furthermore, the first condensate pump is equipped with regulating valves at both its input and output ends.

[0015] Furthermore, the second condensate pump is equipped with regulating valves at both its input and output ends.

[0016] Furthermore, the first condensate pump and the second condensate pump are OH2 type centrifugal pumps.

[0017] Furthermore, the regulating valve is a pneumatic regulating valve.

[0018] This utility model discloses a steam condensate conveying device. Based on the original design, it utilizes existing pipelines and adds two condensate conveying pumps at the outlet of the steam condensate tank. This can restore the liquid level in the condensate tank to normal, improve the heat exchange effect of the steam heat exchanger (located upstream of the storage tank, where the condensate after steam heat exchange is used is collected in the storage tank), and eliminate the water hammer phenomenon in the pipeline, thus ensuring the reliability of pipelines, instruments, regulating valves and other equipment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural diagram of a steam condensate conveying device.

[0021] Reference numerals in the attached diagram: 1. Storage tank; 2. First condensate pump; 3. Second condensate pump; 4. First pipeline; 5. Second pipeline; 6. Third pipeline; 7. Fourth pipeline; 8. Fifth pipeline; 9. First regulating valve; 10. Second regulating valve; 11. Third regulating valve; 12. Fourth regulating valve; 13. Fifth regulating valve; 14. Sixth regulating valve; 15. Seventh regulating valve; 16. Eighth regulating valve. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Figure 1 This is a structural diagram of a steam condensate conveying device;

[0025] A steam condensate conveying device, comprising:

[0026] Storage tank, first condensate pump, second condensate pump;

[0027] The storage tank is connected to the input end of the first condensate pump via a first pipe;

[0028] The storage tank is connected to the input end of the second condensate pump via a second pipe;

[0029] The output end of the first condensate pump is connected via a third pipe;

[0030] The output end of the second condensate pump is connected via a fourth pipe;

[0031] The first pipe and the fourth pipe are connected by a fifth pipe;

[0032] A second regulating valve is provided on the first pipeline, and a first regulating valve is provided on the fifth pipeline;

[0033] A third regulating valve is provided on the fourth tube sweeper.

[0034] It also includes a fourth regulating valve installed on the fourth pipeline.

[0035] The first condensate pump is equipped with regulating valves at both its input and output ends, namely the fifth regulating valve and the sixth regulating valve;

[0036] The second condensate pump is equipped with regulating valves at both its input and output ends, namely the seventh regulating valve and the eighth regulating valve;

[0037] Furthermore, the first condensate pump and the second condensate pump are OH2 type centrifugal pumps.

[0038] Furthermore, the regulating valve is a pneumatic regulating valve.

[0039] This application utilizes existing pipelines to bypass the condensate regulating valve at the outlet of the condensate tank and close the manual valves before and after the main line regulating valve.

[0040] The front hand valve is connected to the shared inlet pipeline of the new water pump at its rear end, and the regulating valve is connected to the shared outlet pipeline of the new water pump at its front end.

[0041] The operation process of the steam condensate conveying device of this application is as follows:

[0042] 1. Storage tank; 2. First condensate pump; 3. Second condensate pump; 4. First pipeline; 5. Second pipeline; 6. Third pipeline; 7. Fourth pipeline; 8. Fifth pipeline; 9. First regulating valve; 10. Second regulating valve; 11. Third regulating valve; 12. Fourth regulating valve; 13. Fifth regulating valve; 14. Sixth regulating valve; 15. Seventh regulating valve; 16. Eighth regulating valve.

[0043] S1: Open the first regulating valve V1, the steam condensate flows through the fifth pipeline, and close the second and fourth regulating valves;

[0044] S2: After opening the second regulating valve V2, connect it to the common inlet of the newly added condensate pump; connect the front end of the third regulating valve V3 to the common outlet of the newly added condensate pump.

[0045] S3: Open the second regulating valve V2 to vent the irrigation pump, start the first condensate pump and the second condensate pump, slightly open the third regulating valve V3, and open the fourth valve V4;

[0046] S4: Connect the internal and external controls, switch the process of the first regulating valve V1 of the auxiliary line to the process of the newly added condensate pump, and adjust the third regulating valve V3 and the pump frequency converter (adjusted by the frequency converter speed controller of the pump motor operated by the DCS central control) to ensure the liquid level in the condensate tank.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A steam condensate conveying device, characterized in that: include: Storage tank, first condensate pump, second condensate pump; The storage tank is connected to the input end of the first condensate pump via a first pipe; The storage tank is connected to the input end of the second condensate pump via a second pipe; The output end of the first condensate pump is connected via a third pipe; The output end of the second condensate pump is connected via a fourth pipe; The first pipe and the fourth pipe are connected by a fifth pipe; A second regulating valve is provided on the first pipeline, and a first regulating valve is provided on the fifth pipeline; A third regulating valve is installed on the fourth pipeline.

2. The steam condensate conveying device according to claim 1, characterized in that: It also includes a fourth regulating valve installed on the fourth pipeline.

3. The steam condensate conveying device according to claim 1, characterized in that: The first condensate pump is equipped with regulating valves at both its input and output ends.

4. The steam condensate conveying device according to claim 1, characterized in that: The second condensate pump is equipped with regulating valves at both its input and output ends.

5. A steam condensate conveying device according to claim 1, characterized in that: The first condensate pump and the second condensate pump are OH2 type centrifugal pumps.

6. A steam condensate conveying device according to claim 3 or 4, characterized in that: The regulating valve is a pneumatic regulating valve.

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