Steam pipeline condensation water emptying system
By adding a bridge steam pipe and a sensor in the steam pipe, the problem of condensate being difficult to drain automatically when the steam system is started is solved, and safe and automatic condensate draining is achieved, avoiding safety accidents and steam waste.
Patent Information
- Application Number
- CN202422401432.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-09-30
AI Technical Summary
When the steam system is restarted after being shut down, the condensate in the steam supply pipes and equipment is difficult to drain automatically and safely, which can easily lead to water hammer and air hammer effects, and operational errors may cause safety accidents or steam waste.
A steam pipe condensate draining system was designed. By adding a bridge steam pipe to the main steam supply pipe and equipping it with pressure and temperature sensors and electric valves, the steam condensate can be drained automatically and safely.
It realizes the automatic and safe emptying of condensate in steam pipes, avoids water hammer effect and air hammer effect, and ensures safety and energy saving.
Smart Images
Figure CN223345171U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of tobacco production assistance, and in particular relates to a steam pipeline condensate emptying system. Background Art
[0002] When the steam system is restarted after a long shutdown, some condensate will accumulate in the steam supply pipeline and the equipment's steam pipeline. When the gas supply is restored, the operator is generally required to manually control the opening of the steam main stop valve of each gas-consuming equipment to avoid water hammer and air hammer effects during the discharge of the accumulated condensate. At the same time, if the gas-consuming equipment is equipped with a steam-water separator with a direct discharge function, if the operator mistakenly fails to shut off the direct discharge function of the steam-water separator in time after the condensate is basically drained, it will cause steam waste at the least and cause high-temperature steam to directly invade the sewage network at the worst, causing a safety accident. Utility Model Content
[0003] The purpose of the utility model is to provide a steam pipe condensate draining system to solve the problems existing in the above-mentioned background technology.
[0004] To achieve the above objectives, this application is implemented through the following technical solutions:
[0005] A steam pipeline condensate emptying system, wherein the steam sub-cylinder is connected to the steam-consuming equipment through the main steam supply pipeline, the steam-consuming equipment is connected to the local condensate storage tank through the condensate recovery pipeline, the local condensate storage tank is connected to the inlet of the thermal lift pump through a drain pipe, and the outlet of the thermal lift pump is connected to the centralized condensate storage tank through a pipeline;
[0006] A main steam stop valve and a main steam electric valve are provided on the main steam supply pipeline, and a steam trap for steam-using equipment is provided on the condensate recovery pipeline.
[0007] Furthermore, a bridging steam pipe parallel to the main steam supply pipe is provided between the steam cylinder and the steam-consuming equipment, and a bridging steam pipe stop valve, a bridging steam pipe steam flow sensor and a bridging steam pipe electric valve are provided on the bridging steam pipe.
[0008] Furthermore, the specification of the bridging steam pipe is less than or equal to DN50.
[0009] Furthermore, a steam trap for the steam-using equipment and a pre-stop valve for the condensate local storage tank are provided on the condensate recovery pipeline.
[0010] Furthermore, a steam flow sensor and a temperature sensor of the steam-using equipment are provided on the condensate recovery pipeline.
[0011] Furthermore, a post-stop valve of the condensate local storage tank is provided on the drainage pipe.
[0012] Furthermore, a one-way valve is provided on the pipeline between the thermal lift pump and the condensate centralized storage tank.
[0013] The beneficial effects of the utility model are:
[0014] This technical solution mainly realizes the automatic and safe emptying of condensate in the steam pipe before startup by adding a bridge pipe to the main steam pipe after the cylinder is separated, and adding some pressure and temperature sensors. It has a simple structural principle and is easy to deploy on a large scale. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a flow chart of the steam pipe condensate discharge system of the utility model.
[0016] Description of reference numerals:
[0017] 100. Steam distribution cylinder; 201. Main steam stop valve; 202. Main steam electric valve; 203. Main steam supply pipeline; 301. Bridge steam pipeline stop valve; 302. Bridge steam pipeline steam flow sensor; 303. Bridge steam pipeline electric valve; 304. Bridge steam pipeline; 400. Steam-using equipment; 401. Steam flow sensor for steam-using equipment; 402. Steam trap for steam-using equipment; 501. Condensate recovery pipeline; 502. Temperature sensor; 503. Condensate local storage tank pre-stop valve; 504. Condensate local storage tank; 505. Liquid level gauge; 506. Condensate local storage tank post-stop valve; 507. Thermal lift pump; 600. Condensate centralized storage tank. DETAILED DESCRIPTION
[0018] The technical solution of the present invention is described in detail below with reference to the accompanying drawings. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solution of the present invention, and cannot be interpreted as limiting the technical solution of the present invention.
[0019] like Figure 1 As shown, the present application provides a steam pipe condensate emptying system, the steam cylinder 100 is connected to the steam-using equipment 400 through the main steam supply pipe 203, the steam-using equipment 400 is connected to the local condensate storage tank 504 through the condensate recovery pipe 501, the local condensate storage tank 504 is connected to the inlet of the thermal lift pump 507 through a drain pipe, and the outlet of the thermal lift pump 507 is connected to the condensate centralized storage tank 600 through a pipeline.
[0020] A main steam stop valve 201 and a main steam electric valve 202 are provided on the main steam supply pipeline 203 , and a steam-using equipment steam trap 402 is provided on the condensate recovery pipeline 501 .
[0021] In this application, a bridging steam pipe 304 parallel to the main steam supply pipe is also provided between the steam cylinder 100 and the steam-consuming equipment 400, and a bridging steam pipe stop valve 301, a bridging steam pipe steam flow sensor 302 and a bridging steam pipe electric valve 303 are provided on the bridging steam pipe 304.
[0022] In this application, the specification of the bridging steam pipe is less than or equal to DN50.
[0023] In the present application, a steam-using equipment drain valve 402 and a condensate local storage tank pre-stop valve 503 are provided on the condensate recovery pipeline 501.
[0024] In the present application, a steam flow sensor 401 and a temperature sensor 502 of a steam-using device are provided on the condensate recovery pipe 501 .
[0025] In this application, a condensate local storage tank post-stop valve 506 is provided on the drainage pipe.
[0026] In the present application, a one-way valve is provided on the pipeline between the thermal lift pump and the condensate centralized storage tank.
[0027] Working principle:
[0028] After the production preparation program is started, the operator checks the opening and closing status of the main steam stop valve 201, the main steam electric valve 202, the main steam supply pipeline 203, the bridging steam pipeline stop valve 301, the bridging steam pipeline electric valve 303, the condensate local storage tank pre-stop valve 503, and the condensate local storage tank post-stop valve 506, and confirms that the main steam electric valve 202 and the bridging steam pipeline electric valve 303 are in the closed state, and the other stop valves are fully opened.
[0029] After confirmation, the local boiler system or municipal pipeline network inputs steam to the steam sub-cylinder 100. Because the main steam stop valve 201 is closed, the steam output from the sub-cylinder passes through the bridge steam pipe 304, the bridge steam pipe stop valve 301, and reaches the bridge steam pipe electric valve 303. (The maximum opening amount in the first stage should be ≥5% and ≤30%).
[0030] After the bridging steam pipe electric valve 303 is opened, under the action of high-pressure, low-flow steam, the condensate inside the steam pipe passes through the steam-using equipment 400, the steam-using equipment steam trap 402, the condensate recovery pipe 501, the temperature sensor 502, the condensate local storage tank pre-stop valve 503, and enters the condensate local storage tank 504.
[0031] The aforementioned condensate local storage tank 504 is provided with a liquid level gauge 505, an overflow pipe and a drain valve (safety valve) (not shown in the figure).
[0032] When the liquid level meter 505 detects that the steam condensate in the local condensate storage tank 504 reaches the preset water level, the thermal lift pump 507 starts to transport the condensate inside the local condensate storage tank 504 to the centralized condensate storage tank 600. A one-way valve (not shown in the figure) is provided behind the thermal lift pump 507.
[0033] When the liquid level meter 505 detects that the steam condensate in the local condensate storage tank 504 has been basically drained, the thermal lift pump 507 stops running.
[0034] The specification of the aforementioned bridging steam pipe 304 should be less than or equal to DN50.
[0035] The opening amount of the bridging steam pipeline electric valve 303 can be controlled manually or automatically.
[0036] The opening amount and opening speed of the bridge steam pipe electric valve 303 in the automatic control mode are mainly determined by the data collected by the bridge steam pipe steam flow sensor 302, the steam flow sensor 401 of the steam-consuming equipment, the temperature sensor 502, and the liquid level meter 505, as well as the layout and diameter of the steam pipe. This application only uses general examples as follows:
[0037] After the steam cylinder 100 starts to output steam, the bridge steam pipeline electric valve 303 is gradually opened from a completely closed state to 30% at a speed of 10% / min, or a gradient of 5% every 30 seconds.
[0038] When the opening amount of the bridge steam pipe electric valve 303 reaches 30%, and the steam flow sensor 302 of the bridge steam pipe and the steam flow sensor 401 of the steam-using equipment have the same values, and the temperature detected by the temperature sensor 502 reaches 70 degrees Celsius, the bridge steam pipe electric valve 303 continues to slowly open to 95% to 100% (preferably 1 minute).
[0039] When the opening amount of the bridge steam pipeline electric valve 303 reaches 95% and the temperature detected by the temperature sensor 502 reaches 90 degrees Celsius, the main steam electric valve 202 is opened from the closed state to 5% and maintained for a certain time (preferably 1 minute).
[0040] After the main steam electric valve 202 is opened from the closed state to 5% to 15%, under the action of the thermal lift pump 507, when the liquid level meter 505 detects a low liquid level, the bridge steam pipeline electric valve 303 is gradually closed at a speed of 95% / min, and the main steam electric valve 202 is gradually fully opened at a speed of 95% / min.
[0041] When the main steam electric valve 202 is fully opened and the bridge steam pipe electric valve 303 is completely closed, the condensate in the steam pipe is drained and the preset objectives of this technical solution are fully achieved.
[0042] Finally, 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technologies therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.
Claims
1. A steam pipe condensate draining system, characterized in that: The steam cylinder is connected to the steam-consuming equipment through the main steam supply pipeline. The steam-consuming equipment is connected to the local condensate storage tank through the condensate recovery pipeline. The local condensate storage tank is connected to the inlet of the thermal lift pump through a drain pipe. The outlet of the thermal lift pump is connected to the centralized condensate storage tank through a pipeline. A main steam stop valve and a main steam electric valve are provided on the main steam supply pipeline, and a steam trap for steam-using equipment is provided on the condensate recovery pipeline.
2. The steam pipe condensate draining system according to claim 1, characterized in that: A bridging steam pipe parallel to the main steam supply pipe is also provided between the steam distribution cylinder and the steam-consuming equipment. A bridging steam pipe stop valve, a bridging steam pipe steam flow sensor and a bridging steam pipe electric valve are provided on the bridging steam pipe.
3. The steam pipe condensate draining system according to claim 2, characterized in that: The specification of the bridging steam pipe is less than or equal to DN50.
4. The steam pipe condensate draining system according to claim 1, characterized in that: A steam-using equipment drain valve and a pre-stop valve for the local condensate storage tank are installed on the condensate recovery pipeline.
5. The steam pipe condensate draining system according to claim 1, characterized in that: A steam flow sensor and a temperature sensor for steam-using equipment are installed on the condensate recovery pipeline.
6. The steam pipe condensate draining system according to claim 1, characterized in that: A post-stop valve for the local condensate storage tank is provided on the drainage pipe.
7. The steam pipe condensate draining system according to claim 1, characterized in that: A one-way valve is provided on the pipeline between the thermal lift pump and the condensate centralized storage tank.