Safe liquid ammonia conveying system

Abstract

The utility model discloses a liquid ammonia safety conveying system, which is characterized in that a plurality of electromagnetic valves controlled by a controller to open and close are uniformly arranged on a pipeline of a liquid ammonia supply pipe at intervals, and an ammonia gas leakage detector for detecting the leakage condition of ammonia gas inside the detection outer sleeve is arranged outside the detection outer sleeve. And the ammonia gas leakage detector is used as a signal input end and is connected with the controller. According to the application, the liquid ammonia supply pipe is divided into a plurality of sections by using the electromagnetic valve and the detection outer sleeve, and then the ammonia leakage detector is used for detecting the other ammonia leakage conditions of the detection outer sleeve of each section; therefore, the ammonia gas leakage position can be conveniently and accurately detected in sections; the ammonia gas leakage detector is used for detecting signals and sending the signals to the controller, on one hand, electromagnetic valves at the two ends of the detection outer sleeve are closed, and on the other hand, water is sprayed to the detection outer sleeve and the area pipeline through the spraying frame; therefore, accurate detection and fire fighting are achieved, and conveying safety is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid ammonia transportation, in particular to a liquid ammonia safety transportation system. Background Art

[0002] In the field of chemical production, the liquid ammonia conveying device is a key link in the production and operation of the synthetic ammonia system. During the normal production process, part of the products produced by the synthetic ammonia system need to be transported to the liquid ammonia storage tank by the liquid ammonia conveying device for storage and standby. In addition, when an abnormal situation occurs in the operation stage of the synthetic ammonia system, the liquid ammonia in the liquid ammonia storage tank must be transported out to ensure that the entire production is not interrupted to meet the needs of normal operation of the system. In addition, when the liquid ammonia storage tank needs to be overhauled, all the liquid ammonia in the liquid ammonia storage tank needs to be transported out.

[0003] In the prior art, when liquid ammonia is transported through a liquid ammonia supply pipe, especially when it is transported over long distances, it is not convenient to accurately detect leaked ammonia so as to achieve timely maintenance and accurate troubleshooting of the liquid ammonia delivery pipe and fire prevention measures. Utility Model Content

[0004] The utility model aims to provide a liquid ammonia safe transportation system to solve the problem that it is inconvenient to accurately detect leaked ammonia and carry out fire protection maintenance when conventional liquid ammonia is transported over long distances.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] The utility model provides a liquid ammonia safety delivery system, comprising a liquid ammonia supply pipe connected to a liquid ammonia station and a plurality of liquid ammonia supply standby pipes, and a plurality of fire fighting water pipes respectively arranged in parallel with the liquid ammonia supply pipe / liquid ammonia supply standby pipe;

[0007] A plurality of solenoid valves controlled to open and close by a controller are evenly spaced on the pipeline of the liquid ammonia supply pipe, and detection outer sleeves are respectively sealed and arranged on the pipelines adjacent to the solenoid valves, and an ammonia leakage detector for detecting ammonia leakage inside the detection outer sleeve is arranged outside the detection outer sleeve, and the ammonia leakage detector is connected to the controller as a signal input end;

[0008] A plurality of fire sprinkler racks are connected in parallel to the fire water pipe and are respectively parallel to the detection outer casing. Fire solenoid valves controlled to open and close by a controller are respectively arranged at both ends of the fire sprinkler racks.

[0009] Furthermore, the liquid ammonia station is a liquid ammonia tank.

[0010] Furthermore, a detection outer sleeve and a fire sprinkler rack which are the same as those of the liquid ammonia supply pipe are arranged outside the liquid ammonia supply standby pipe.

[0011] Furthermore, the fire sprinkler rack is provided with a plurality of atomizing nozzles, and the atomizing range thereof is greater than the length of the detection outer sleeve.

[0012] Compared with the prior art, the beneficial technical effects of the utility model are as follows: in the present application, the liquid ammonia supply pipe is divided into multiple sections by using an electromagnetic valve and a detection outer sleeve, and then an ammonia leak detector is used to detect the remaining ammonia leakage of the detection outer sleeve of each specific section; thereby facilitating the accurate detection of the ammonia leakage position in sections; and the detection signal of the ammonia leak detector is sent to the controller, on the one hand, the electromagnetic valves at both ends of the detection outer sleeve are closed, and on the other hand, water is sprayed on the detection outer sleeve and the pipeline in the area through a spray rack; thereby achieving accurate detection and fire fighting to ensure transportation safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model will be further described below in conjunction with the accompanying drawings.

[0014] Figure 1 It is a schematic diagram of the liquid ammonia safety delivery system of the utility model.

[0015] Explanation of the reference numerals: 1. liquid ammonia tank; 1a. liquid ammonia supply pipe; 1b. liquid ammonia supply standby pipe; 2. first solenoid valve; 2a. second solenoid valve; 3. detection outer sleeve; 4. first ammonia leak detector; 4a. second ammonia leak detector; 5. controller; 6. fire water pipe; 7. first fire solenoid valve; 7a. second fire solenoid valve; 8. first fire sprinkler rack; 8a. second fire sprinkler rack. DETAILED DESCRIPTION

[0016] This embodiment discloses a liquid ammonia safety delivery system, comprising a liquid ammonia supply pipe 1a connected to a liquid ammonia station and a plurality of liquid ammonia supply standby pipes 1b, and a plurality of fire water pipes 6 respectively arranged in parallel with the liquid ammonia supply pipe 1a / liquid ammonia supply standby pipe 1b;

[0017] like Figure 1 As shown, a plurality of solenoid valves (such as a first fire-fighting solenoid valve 7 or a second fire-fighting solenoid valve 8) controlled by a controller 5 are evenly installed on the pipeline of the liquid ammonia supply pipe 1a, and detection outer sleeves 3 are respectively sealed and installed on the pipelines adjacent to the solenoid valves. An ammonia leakage detector (such as a first ammonia leakage detector 4 and a second ammonia leakage detector 4a) for detecting ammonia leakage inside the detection outer sleeve 3 is installed outside the detection outer sleeve 3, and the ammonia leakage detector is connected to the controller 5 as a signal input end;

[0018] A plurality of fire sprinkler racks (e.g., a first fire sprinkler rack 8 and a second fire sprinkler rack 8a) are connected in parallel to the fire hose 6 and are parallel to the detection outer casing 3, respectively. Fire solenoid valves (e.g., a first fire solenoid valve 7 and a second fire solenoid valve 7a) are installed at both ends of the fire sprinkler racks and are controlled to open and close by a controller 5;

[0019] Here is how this application works:

[0020] The liquid ammonia supply pipe is divided into multiple sections by using a solenoid valve and a detection outer sleeve 3, and then an ammonia leakage detector is used to detect the remaining ammonia leakage of each specific section of the detection outer sleeve 3;

[0021] If the ammonia gas leak detector detects a leak inside the detection outer casing 3, the signal is sent to the controller 5 through the signal transmitter, which closes the solenoid valves at both ends of the detection outer casing 3 on the one hand, and controls the fire solenoid valve 7 to open on the other hand, so that the water of the fire water pipe 6 is injected into the first fire sprinkler rack 8, and the detection outer casing 3 and the pipelines in the area are sprayed with water through the sprinkler rack;

[0022] Specifically, ammonia gas is easily soluble in water and is converted or diluted into ammonia water to avoid explosion accidents.

[0023] In this embodiment, the liquid ammonia station is a liquid ammonia tank 1 , and the liquid ammonia supply pipe 1 a and a plurality of liquid ammonia supply standby pipes 1 b can be connected to the liquid ammonia tank 1 in parallel.

[0024] In this embodiment, the same detection outer sleeve and fire sprinkler rack as those of the liquid ammonia supply pipe 1a are installed on the outside of the liquid ammonia supply spare pipe 1b; that is, the same detection equipment and fire-fighting equipment as those of the liquid ammonia supply pipe 1a are installed on the outside of the liquid ammonia supply spare pipe 1b to improve the overall and section safety system.

[0025] Specifically, a plurality of atomizing nozzles are installed on the fire sprinkler frame, and the atomizing range thereof is greater than the length of the detection outer sleeve, so as to effectively dissolve the leaked ammonia and avoid fire.

[0026] The above embodiments are only descriptions of the preferred methods of the invention, and are not intended to limit the scope of the invention. Without departing from the design spirit of the invention, various modifications and improvements made to the technical solution of the invention by ordinary technicians in this field should fall within the protection scope of the claims of the invention.

Claims

1. A liquid ammonia safe delivery system, characterized in that: It comprises a liquid ammonia supply pipe (1a) connected to a liquid ammonia station and a plurality of liquid ammonia supply standby pipes (1b), and a plurality of fire fighting water pipes (6) respectively arranged in parallel with the liquid ammonia supply pipe (1a) / the liquid ammonia supply standby pipe (1b); A plurality of solenoid valves controlled to open and close by a controller (5) are evenly spaced on the pipeline of the liquid ammonia supply pipe (1a); detection outer sleeves (3) are respectively sealed and arranged on the pipelines adjacent to the solenoid valves; an ammonia leakage detector for detecting ammonia leakage inside the detection outer sleeve (3) is arranged outside the detection outer sleeve (3); the ammonia leakage detector is connected to the controller (5) as a signal input terminal; A plurality of fire sprinkler racks are connected in parallel to the fire water pipe (6) and are respectively parallel to the detection outer casing (3). Fire solenoid valves controlled to open and close by a controller (5) are respectively arranged at both ends of the fire sprinkler racks.

2. The liquid ammonia safe delivery system according to claim 1, characterized in that: The liquid ammonia station is a liquid ammonia tank (1).

3. The liquid ammonia safe delivery system according to claim 1, characterized in that: The outside of the liquid ammonia supply standby pipe (1b) is provided with a detection outer casing and a fire sprinkler rack which are the same as those of the liquid ammonia supply pipe (1a).

4. The liquid ammonia safe delivery system according to claim 1, characterized in that: The fire sprinkler frame is provided with a plurality of atomizing nozzles, and the atomizing range thereof is greater than the length of the detection outer sleeve.

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