Universal adjustable safe vaporization device for liquefied bulk gas

Abstract

The utility model discloses a universal adjustable safe vaporization device for liquefied bulk gas, which belongs to the technical field of vaporization devices and comprises a liquid nitrogen storage tank, one end of the liquid nitrogen storage tank is fixedly connected with a first gas source switch device, and the other end of the liquid nitrogen storage tank is fixedly connected with a second gas source switch device. The end, away from the liquid nitrogen storage tank, of the first gas source switch device is fixedly connected with a second gas source switch device and a vaporizer pipeline, and the face, away from the first gas source switch device, of the vaporizer pipeline is fixedly connected with a detection pipeline used for main pipeline detection. The face, away from the first gas source switch device, of the second gas source switch device is fixedly connected with two sets of temperature safety control devices. The problems that in the process that liquefied gas is conveyed to the vaporizer through a low-temperature pump and the like, the speed and the temperature need to be strictly controlled to prevent overload of the vaporizer, and meanwhile the pressure and the temperature of output gas behind the vaporizer can cause a large amount of influences on used equipment are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of bag type vaporization device, concretely is a kind of adjustable safety vaporization device of general liquefied bulk gas. BACKGROUND

[0002] With the development of semiconductor, medical, metal processing and chemical industry, bulk gas related technology is also increasingly mature, and the existing bulk gas vaporization process is mainly: liquid gas storage, maintain extremely low temperature in low-temperature storage tank (dewar or large storage tank);Liquid gas delivery, liquid gas is driven by low-temperature pump or storage tank's pressure driving system through adiabatic pipeline to vaporizer;Liquid gas vaporization, liquid gas is completely vaporized in vaporizer by heat exchange;Vaporized gas is delivered to each use point by pipeline.

[0003] However, there are many uncontrollable factors in the existing process, and the rate and temperature of liquefied gas delivered to the vaporizer by low-temperature pump need to be strictly controlled to prevent the overload of the vaporizer, and the output gas pressure and temperature after the vaporizer will have a great impact on the use equipment. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of adjustable safety vaporization device of general liquefied bulk gas to solve the problem of many uncontrollable factors in the process proposed in the above background technology, the rate and temperature of liquefied gas delivered to the vaporizer by low-temperature pump need to be strictly controlled to prevent the overload of the vaporizer, and the output gas pressure and temperature after the vaporizer will have a great impact on the use equipment.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a kind of adjustable safety vaporization device of general liquefied bulk gas, comprising liquid nitrogen storage tank, the liquid nitrogen storage tank one end is fixedly connected with first gas source switch device, the first gas source switch device is fixedly connected with second gas source switch device and vaporizer pipeline away from liquid nitrogen storage tank one end, the vaporizer pipeline is fixedly connected with detection pipeline for total pipeline detection away from the one of first gas source switch device, the second gas source switch device is fixedly connected with temperature safety control device away from the one of first gas source switch device, the temperature safety control device is provided with two groups.

[0006] Further, the vaporizer pipeline is provided with two groups, and the vaporizer pipeline includes A and B two groups of pipelines inside.

[0007] Further, the vaporizer pipeline interior A pipeline interior includes third gas source switch device, one side of the third gas source switch device is fixedly connected with first vaporizer away from second gas source switch device, one side of the first vaporizer is fixedly connected with fourth gas source switch device, exhaust gas source switch device and fifth gas source switch device away from third gas source switch device, one side of the fourth gas source switch device is fixedly connected with temperature detection device away from third gas source switch device, one side of the fifth gas source switch device is fixedly connected with pressure safety control device close to third gas source switch device.

[0008] Further, the vaporizer pipeline interior B pipeline and vaporizer pipeline A pipeline structure are same, and the vaporizer pipeline B pipeline is connected with the vaporizer pipeline A pipeline front and back ends.

[0009] Further, the detection pipeline is fixedly connected with the other end of the five gas source switches of the vaporizer pipeline A pipeline, and the detection pipeline interior includes sixth gas source switch device, one end of the sixth gas source switch device is fixedly connected with seventh gas source switch device and eighth gas source switch device, and one end of the sixth gas source switch device, one end of the seventh gas source switch device, one end of the eighth gas source switch device and the other end of the two groups of fifth gas source switches are fixedly connected.

[0010] Further, the other end of the sixth gas source switch device is fixedly connected with temperature sensor, and the other end of the seventh gas source switch device is fixedly connected with pressure sensor.

[0011] Compared with the prior art, the beneficial effects of the adjustable safety vaporization device for general liquefied bulk gas are as follows: the process becomes safe and controllable through the optimization of the pipeline and the control system, the temperature control safety valve receives fluid information from the main pipeline and automatically adjusts the valve opening degree according to the set value, discharges gas or cuts off the flow, avoids the local temperature rise caused by the pipeline heat preservation failure or environmental heat transfer, and the sudden increase of the system pressure caused by the violent vaporization of the liquefied gas, and after the liquid bulk gas is fully gasified in the vaporizer Q-(A / B), the process of conveying the liquid bulk gas to the downstream equipment is added with the temperature monitoring device TI-A, so as to prevent the damage of the equipment pipeline caused by the incomplete vaporization of the liquid gas, when a plurality of vaporizers are connected in parallel, the temperature sensor TE- and the pressure sensor PT- are added after the outlet pipelines of the vaporizers are combined, so as to monitor the temperature and pressure of the combined pipeline, prevent the influence of overpressure or too low temperature on the pipeline and the downstream equipment, and the rear gas source switch device V- controls the gas flow output to the use point. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a pipeline connection structure schematic view of the utility model;

[0013] Figure 2 It is a whole structure schematic view of the utility model;

[0014] Figure 3 This is a three-dimensional structural diagram of the present invention.

[0015] In the diagram: 1. Liquid nitrogen storage tank; 2. First gas source switch device; 3. Second gas source switch device; 4. Vaporizer pipeline; 5. Detection pipeline; 6. Temperature safety control device; 41. Third gas source switch device; 42. First vaporizer; 43. Fourth gas source switch device; 44. Purge gas source switch device; 45. Fifth gas source switch device; 46. Safety control device; 47. Temperature detection device; 61. Sixth gas source switch device; 62. Seventh gas source switch device; 63. Eighth gas source switch device; 64. Temperature sensor; 65. Pressure sensor. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1This utility model provides a technical solution: a universal adjustable safety vaporization device for liquefied bulk gases, including a liquid nitrogen storage tank 1. A first gas source switch device 2 is fixedly connected to one end of the liquid nitrogen storage tank 1. A second gas source switch device 3 and a vaporizer pipeline 4 are fixedly connected to the end of the first gas source switch device 2 away from the liquid nitrogen storage tank 1. A detection pipeline 5 for main pipeline detection is fixedly connected to the side of the vaporizer pipeline 4 away from the first gas source switch device 2. A temperature safety control device 6 is fixedly connected to the side of the second gas source switch device 3 away from the first gas source switch device 2. The temperature safety control device 6 has two sets, model TSV-0101, and is configured as two sets A / B. The vaporizer pipeline 4 has two sets of... The vaporizer line 4 contains two sets of lines, A and B. Inside line A of the vaporizer line 4, there is a third gas source switch device 41. The side of the third gas source switch device 41 away from the second gas source switch device 3 is fixedly connected to the first vaporizer 42. The side of the first vaporizer 42 away from the third gas source switch device 41 is fixedly connected to the fourth gas source switch device 43, the purge gas source switch device 44, and the fifth gas source switch device 45. The side of the fourth gas source switch device 43 away from the third gas source switch device 41 is fixedly connected to the temperature detection device 47. The side of the fifth gas source switch device 45 close to the third gas source switch device 41 is fixedly connected to the pressure safety control device 46. The temperature detection device 47 is a thermometer, model T1 101A, and the pressure safety control device 46 is model PSV 0102A.

[0018] Reference Figure 2 The internal B line of vaporizer line 4 has the same structure as vaporizer line 4A. The front and rear ends of vaporizer line 4B and vaporizer line 4A are connected to each other. The detection line 5 is fixedly connected to the other end of the five gas source switch 45 of vaporizer line 4A. The detection line 5 includes a sixth gas source switch device 61. One end of the sixth gas source switch device 61 is fixedly connected to a seventh gas source switch device 62 and an eighth gas source switch device 63. One end of the sixth gas source switch device 61, one end of the seventh gas source switch device 62, one end of the eighth gas source switch device 63, and the other ends of the two sets of fifth gas source switch devices 45 are fixedly connected. The other end of the sixth gas source switch device 61 is fixedly connected to a temperature sensor 64. The other end of the seventh gas source switch device 62 is fixedly connected to a pressure sensor 65. The temperature sensor 64 is model TE 0101, and the pressure sensor 65 is model PT0101.

[0019] Reference Figure 1 and Figure 3This includes LPG storage tank T-01, gas source switch device V-02, temperature safety control device 6TSV-0101, and devices A / B of the same type and function (hereinafter the same), gas source switch device V-01, gas source switch device V-03A / B, vaporizer Q-01(A / B), gas source switch device V-04(A / B), thermometer TI-101(A / B), gas source switch device V-05(A / B), and pressure safety control device PS. V-0102(A / B), gas source switch V-06(A / B), temperature detection devices TI-102, TE0101, pressure detection devices PI-101, PT-0101, gas source switch V-07, gas source switch V-08, gas source switch V-08; a gas source switch V-02 is installed on the fixed pipeline, and a gas source device V-01 is installed on the branch at the rear end of the fixed pipeline. Temperature sensors are installed at both ends of the gas source switch V-01. The system includes a temperature safety control device TSV-0101(A / B), a gas source switch device V-03(A / B) at the rear end of the fixed pipeline, which is then connected to the vaporizer Q-01(A / B). A gas source switch device V-04(A / B) is installed on a branch of the vaporizer Q-01(A / B) output pipeline, with a temperature monitoring device TI-101A connected at the rear end. The output pipeline is then connected to a purging gas source switch device V-05(A / B). After purging the output pipeline, a pressure safety control device PSV-0102(A / B) is installed, followed by a gas source switch device V-06(A / B) on the output pipeline. When multiple vaporizers are connected in parallel, a temperature monitoring device (gas source switch device V-07 and temperature sensor 64TE-0101) is installed on the main pipe after the output pipelines converge. A pressure monitoring device (gas source switch device V-08 and pressure sensor 65PT-0101) is installed after the temperature monitoring device, followed by a gas source switch device V-09.

[0020] Working principle: First, the entire vaporization process is controlled by controlling the temperature of the medium conveyed by the front-end storage tank and adjusting the conveying pressure of the vaporizer. Under normal operating conditions, after the liquid enters the front end, the gas source switch device V-01 remains in a normally closed state, and the liquefied gas flows completely to the main line to ensure the normal operation of the system. Under abnormal operating conditions, if the temperature is abnormal, the gas source switch device V-01 can switch or open the branch, triggering the temperature safety valve TSV-0101(A / B). The temperature control safety valve TSV-0101 receives fluid information from the main pipeline and automatically adjusts the valve opening according to the set value, releasing gas or cutting off the flow, to avoid the liquefied gas from violently vaporizing and causing a sudden increase in system pressure due to local heating caused by pipeline insulation failure or environmental heat transfer. During the process of transporting the bulk liquid gas to the downstream equipment after it has been fully vaporized in the vaporizer Q-01(A / B), a temperature monitoring device TI-101A is installed to prevent equipment and pipeline damage caused by incomplete vaporization of liquid gas. When the temperature is too low, the opening of the front-end gas source switch device V-02 is adjusted to achieve a stable rate. At the same time, a pressure control safety valve PSV-0102 is installed after the temperature indicator TI-101(A / B). When the pressure in the pipeline rises abnormally and exceeds the set value, the excess gas is released to prevent overpressure of the pipeline and equipment and ensure the safety of the system. When multiple vaporizers are connected in parallel, a temperature sensor 64TE-0101 and a pressure sensor 65PT-0101 need to be added after the outlet pipelines of each vaporizer merge to monitor the temperature and pressure of the merged pipeline, so as to prevent overpressure or low temperature from affecting the pipeline and downstream equipment. The downstream gas source switch device V-09 controls the airflow output to the point of use.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A universal adjustable and safe vaporization device for liquefied bulk gases, comprising a liquid nitrogen storage tank (1), characterized in that: One end of the liquid nitrogen storage tank (1) is fixedly connected to a first gas source switch device (2). The end of the first gas source switch device (2) away from the liquid nitrogen storage tank (1) is fixedly connected to a second gas source switch device (3) and a vaporizer pipeline (4). The side of the vaporizer pipeline (4) away from the first gas source switch device (2) is fixedly connected to a detection pipeline (5) for main pipeline detection. The side of the second gas source switch device (3) away from the first gas source switch device (2) is fixedly connected to a temperature safety control device (6). Two sets of temperature safety control devices (6) are provided.

2. The universal adjustable and safe vaporization device for liquefied bulk gases according to claim 1, characterized in that: The vaporizer pipeline (4) is provided with two sets, and the vaporizer pipeline (4) includes two sets of pipelines, A and B.

3. The universal adjustable and safe vaporization device for liquefied bulk gases according to claim 1, characterized in that: The vaporizer pipeline (4) contains a third gas source switch device (41) inside the A pipeline. The side of the third gas source switch device (41) away from the second gas source switch device (3) is fixedly connected to the first vaporizer (42). The side of the first vaporizer (42) away from the third gas source switch device (41) is fixedly connected to the fourth gas source switch device (43), the purge gas source switch device (44), and the fifth gas source switch device (45). The side of the fourth gas source switch device (43) away from the third gas source switch device (41) is fixedly connected to the temperature detection device (47). The side of the fifth gas source switch device (45) close to the third gas source switch device (41) is fixedly connected to the pressure safety control device (46).

4. A universal adjustable and safe vaporization device for liquefied bulk gases according to claim 3, characterized in that: The internal B line of the vaporizer line (4) has the same structure as the A line of the vaporizer line (4), and the B line of the vaporizer line (4) is connected to the front and rear ends of the A line of the vaporizer line (4).

5. A universal adjustable and safe vaporization device for liquefied bulk gases according to claim 4, characterized in that: The detection pipeline (5) is fixedly connected to the other end of the fifth gas source switch device (45) of the vaporizer pipeline (4) A. The detection pipeline (5) includes a sixth gas source switch device (61). One end of the sixth gas source switch device (61) is fixedly connected to a seventh gas source switch device (62) and an eighth gas source switch device (63). One end of the sixth gas source switch device (61), one end of the seventh gas source switch device (62), one end of the eighth gas source switch device (63) and the other ends of the two sets of fifth gas source switch devices (45) are fixedly connected.

6. A universal adjustable and safe vaporization device for liquefied bulk gases according to claim 5, characterized in that: A temperature sensor (64) is fixedly connected to the other end of the sixth gas source switch device (61), and a pressure sensor (65) is fixedly connected to the other end of the seventh gas source switch device (62).

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