Separation control gas path distributor for three-tower oxygen generator

Abstract

The application provides a separation control gas path distributor for a three-tower oxygen generator, which is used for connecting a molecular sieve adsorption tower and setting a separation control valve, and comprises a rectangular block, three air inlet channels and a common channel are arranged in the rectangular block, the three air inlet channels are distributed in parallel left and right and extend vertically, and the common channel is located below the three air inlet channels and extends horizontally left and right; the lower end of each of the three air inlet channels is provided with a first valve through hole, the common channel is provided with a second valve through hole corresponding to the positions of the three first valve through holes, and the three first valve through holes are used for connecting three separation control valves respectively in cooperation with the second valve through holes below the three first valve through holes; the air inlet channel is provided with a first detection hole for connecting an adsorption tower pressure sensor; the air inlet channel is provided with a first air inlet hole and a first air outlet hole, and the first air inlet hole is used for connecting the molecular sieve adsorption tower. The device replaces a hard pipe to install a pressure sensor and a separation control valve, etc., can ensure the precision of the connection size and the installation precision, and avoids gas leakage in long-term use.

Description

Technical Field

[0001] This utility model relates to the field of oxygen production equipment technology, specifically a separation control gas path distributor for a three-tower oxygen generator. Background Technology

[0002] In a molecular sieve oxygen generator, the molecular sieve adsorption tower (referred to as the adsorption tower throughout this application for simplicity) includes two processes: adsorption and desorption, in which the airflow directions are opposite. In a three-tower oxygen generator, to ensure continuous oxygen production, the three molecular sieve adsorption towers alternately produce oxygen. While one molecular sieve adsorption tower is in the oxygen production process, the other two molecular sieve adsorption towers undergo pressure equalization, backflushing, and desorption processes.

[0003] The typical design and installation method uses three separate control valves, controlled by a master controller, which are connected to the corresponding molecular sieve adsorption towers via pipelines. The three valves and related pipelines can be connected in a star or Y configuration. However, since pressure gauges or pressure sensors need to be installed on the pipelines, it is difficult to completely eliminate stress by using rigid metal pipes. After long-term use, air leakage is likely to occur, which will affect the oxygen purity. Utility Model Content

[0004] To address the technical problems mentioned above, this utility model provides a separate control gas path distributor for a three-tower oxygen generator.

[0005] The technical solution of this utility model is as follows: A separation control gas path distributor for a three-tower oxygen generator, used to connect a molecular sieve adsorption tower and a separation control valve, includes a rectangular block, with three air inlet channels and a common channel inside the rectangular block. The three air inlet channels are distributed horizontally and vertically, and the common channel is located below the three air inlet channels and extends horizontally. The lower end of each of the three intake channels is provided with a first valve through hole, and the common channel is provided with a second valve through hole corresponding to the position of the three first valve through holes. The three first valve through holes, together with the second valve through holes below them, are used to connect to the three separate control valves respectively. The air inlet channel is equipped with a first detection hole for connecting the adsorption tower pressure sensor; The air inlet channel is provided with a first air inlet and a first air outlet. The first air inlet is used to connect to the molecular sieve adsorption tower.

[0006] In the above scheme, the air intake channel extends upward through the upper side of the rectangular block, and the port is the first air outlet.

[0007] Furthermore, the first air intake is located on the front side of the rectangular block and at the top of the air intake channel.

[0008] Furthermore, the diameter of the first air intake is equal to the diameter of the air intake channel.

[0009] Furthermore, the first detection hole is located on the front side of the rectangular block and below the first air inlet.

[0010] Furthermore, both the first valve through hole and the second valve through hole are located on the front side of the rectangular block, and each consists of at least two circular holes.

[0011] Furthermore, the first valve through-hole consists of two round holes arranged vertically, and the second valve through-hole consists of two round holes arranged horizontally.

[0012] In some embodiments, the rectangular block is further provided with an air outlet control channel and an air outlet channel. The air outlet control channel extends vertically and has a second air inlet. The second air inlet can communicate with three first air outlets. The air outlet channel is located below the air outlet control channel and has a second air outlet. The lower end of the air outlet control channel has a third valve through hole. The air outlet channel has a fourth valve through hole corresponding to the position of the third valve through hole. The third valve through hole and the fourth valve through hole cooperate to connect the air outlet control valve.

[0013] Furthermore, a detection channel is connected to the gas outlet channel, and the detection channel extends downward and has a second detection hole for connecting an oxygen production pressure sensor.

[0014] This utility model provides a separation control gas path distributor for a three-tower oxygen generator, which replaces rigid pipes to install components such as pressure sensors and separation control valves. It can ensure the accuracy of connection dimensions and installation, avoid gas leakage during long-term use, and ensure that the oxygen generator can be used for a long time and produce oxygen stably.

[0015] In addition, through the channel design on the separation control gas distributor, the three molecular sieve adsorption towers can be connected according to the prescribed logic and process through three separation control valves. The three separation control valves do not interfere with each other and can maintain the consistency of airflow and pressure in each channel.

[0016] Furthermore, by separating the various passages and their connections on the control gas distributor, the gas path can be effectively distributed, reducing the use of connecting pipes and simplifying pipeline connections. Attached Figure Description

[0017] In the attached diagram: Figure 1 This is a front view diagram of the distributor.

[0018] The components represented by the various reference numerals in the diagram are: 1. Rectangular block; 2. Air intake channel; 21. First valve through hole; 22. First detection hole; 23. First air intake hole; 24. First air outlet hole; 3. Common channel; 31. Second valve through hole; 4. Air outlet control channel; 41. Second air intake hole; 42. Third valve through hole; 5. Air outlet channel; 51. Second air outlet hole; 52. Fourth valve through hole; 6. Detection channel; 61. Second detection hole. Detailed Implementation

[0019] like Figure 1 As shown in the figure, this utility model embodiment provides a separation control gas path distributor for a three-tower oxygen generator, which is used to connect a molecular sieve adsorption tower and a separation control valve.

[0020] The separate control gas path distributor includes a rectangular block 1, which is mounted on the oxygen generator and has mounting holes at its four corners.

[0021] The rectangular block 1 has three air intake channels 2 and one common channel 3. The three air intake channels 2 are distributed horizontally and extend vertically, while the common channel 3 is located below the three air intake channels 2 and extends horizontally.

[0022] Each of the three air inlet channels 2 has a first valve through-hole 21 at its lower end. A common channel 3 has a second valve through-hole 31 corresponding to each of the three first valve through-holes 21. The three first valve through-holes 21, together with the second valve through-holes 31 below them, are used to connect to three separate control valves. That is, each air inlet channel 2 is connected to the common channel 3 through a separate control valve. The three separate control valves are independently controlled and do not interfere with each other, which helps ensure the consistency of the periodic adsorption and desorption operations of the molecular sieve adsorption tower during oxygen production.

[0023] In use, open two of the three separation control valves to connect the corresponding two air inlet channels 2 with the common channel 3, thereby connecting the corresponding two molecular sieve adsorption towers. This allows part of the airflow in one air inlet channel 2 to flow into the other molecular sieve adsorption tower to complete the pressure equalization and desorption process of the molecular sieve adsorption tower.

[0024] The air inlet channel 2 is provided with a first detection hole 22 for connecting the adsorption tower pressure sensor; The air inlet channel 2 is provided with a first air inlet 23 and a first air outlet 24. The first air inlet 23 is used to connect to the molecular sieve adsorption tower.

[0025] Specifically, in this embodiment, the air intake channel 2 extends upward through the upper side of the rectangular block 1, and the upper port of the air intake channel 2 serves as the first air outlet 24. The first air outlet 24 is connected to a one-way valve to output gas outward.

[0026] The first air inlet 23 is located on the front side of the rectangular block 1 and above the air inlet channel 2. It is connected to the molecular sieve adsorption tower through a pipeline to connect the air inlet channel 2 with the molecular sieve adsorption tower. The oxygen generated by the molecular sieve adsorption tower enters the air inlet channel 2 through the first air inlet 23 and is then output through the first air outlet 24.

[0027] The diameter of the first air inlet 23 is equal to the diameter of the air intake channel 2, so that the unit flow rate in and out of the air intake channel 2 is matched. This avoids the situation where the diameter of the air intake channel 2 is larger than the diameter of the first air inlet 23, which would waste the space of the rectangular block 1, or the diameter of the air intake channel 2 is smaller than the diameter of the first air inlet 23, which would lead to increased air pressure and affect the smooth flow of gas.

[0028] The first detection hole 22 is located on the front side of the rectangular block 1 and below the first air inlet 23.

[0029] The first valve through-hole 21 and the second valve through-hole 31 are both located on the front side of the rectangular block 1. In order to be compatible with various specifications of separation control valves, the first valve through-hole 21 and the second valve through-hole 31 are both composed of at least two circular holes.

[0030] In this embodiment, the first valve through hole 21 consists of two round holes arranged vertically, and the second valve through hole 31 consists of two round holes arranged horizontally.

[0031] The rectangular block 1 is also provided with threaded holes corresponding to the position where the separation control valve is installed, for the separation control valve to be installed and fixed.

[0032] In some other embodiments, the first vent 24 is connected to the oxygen supply pipe and the oxygen supply control valve via a one-way valve.

[0033] In this embodiment, to further simplify the pipeline connection, the rectangular block 1 is also provided with an air outlet control channel 4 and an air outlet channel 5.

[0034] The exhaust control channel 4 extends vertically, parallel to the intake channel 2, and is located to the left of the leftmost intake channel 2. The exhaust control channel 4 is provided with a second intake port 41, and the three first exhaust ports 24 are connected to the second intake port 41 through pipelines connected to one-way valves respectively.

[0035] Specifically, the air outlet control channel 4 extends upward through the upper side of the rectangular block 1, and the upper port is used as the second air inlet 41.

[0036] The exhaust channel 5 is located below the exhaust control channel 4, and it has a second exhaust port 51. The exhaust channel 5 and the exhaust control channel 4 are connected by an exhaust control valve to control whether they are connected or not. Oxygen flowing in from the intake channel 2 flows to the exhaust control channel 4 through a one-way valve, and then flows out through the exhaust channel 5.

[0037] Specifically, the lower end of the air outlet control channel 4 is provided with a third valve through hole 42, and the air outlet channel 5 is provided with a fourth valve through hole 52 corresponding to the position of the third valve through hole 42. The third valve through hole 42 and the fourth valve through hole 52 are used to connect the air outlet control valve. The arrangement of the third valve through hole 42 and the fourth valve through hole 52 is the same as that of the first valve through hole 21 and the second valve through hole 31.

[0038] In this embodiment, the air outlet channel 5 extends laterally, penetrating the left side of the rectangular block 1, and the left port is used as the second air outlet 51. Furthermore, a detection channel 6 is connected to the gas outlet channel 5, and the detection channel 6 extends downward to connect to an oxygen production pressure sensor.

[0039] Specifically, in this embodiment, the detection channel 6 extends downward through the lower side of the rectangular block 1, and the lower port of the detection channel 6 is the second detection hole 61. The second detection hole 61 is connected to the oxygen production pressure sensor through a pipeline and connected to the oxygen sampling circuit for purity detection.

[0040] In some other embodiments, the second detection hole 61 extends rearward from the front side of the rectangular block 1, connecting to the detection channel 6, which is also provided with a sampling hole. The second detection hole 61 is used to connect to the oxygen production pressure sensor, and the sampling hole is used to connect to the oxygen sampling circuit to perform real-time oxygen sampling. The oxygen sampling circuit is connected to the oxygen sensor to detect the oxygen purity in real time. The sampling hole also extends rearward from the front side of the rectangular block 1, connecting to the detection channel 6.

[0041] In this embodiment, the air intake channel 2 and the air outlet control channel 4 are both blind holes drilled downwards from the upper side of the rectangular block 1. The common channel 3 is a blind hole drilled from the right side of the rectangular block 1 facing left. The air outlet channel 5 is a blind hole drilled from the left side of the rectangular block 1 facing right. The detection channel 6 is a blind hole drilled upwards from the lower side of the rectangular block 1. The right end of the common channel 3 is a process hole, which is sealed with a threaded plug.

Claims

1. A separation control gas path distributor for a three-tower oxygen generator, used to connect a molecular sieve adsorption tower and a separation control valve, characterized in that, Includes a rectangular block (1), which has three air intake channels (2) and a common channel (3). The three air intake channels (2) are arranged in parallel left and right and extend vertically. The common channel (3) is located below the three air intake channels (2) and extends horizontally left and right. The lower end of each of the three air intake channels (2) is provided with a first valve through hole (21), and the common channel (3) is provided with a second valve through hole (31) corresponding to the three first valve through holes (21). The three first valve through holes (21) and the second valve through holes (31) below them are used to connect to the three separate control valves respectively. The air intake channel (2) is provided with a first detection hole (22) for connecting the adsorption tower pressure sensor; The air inlet channel (2) is provided with a first air inlet (23) and a first air outlet (24). The first air inlet (23) is used to connect to the molecular sieve adsorption tower.

2. The separation control gas path distributor for a three-tower oxygen generator as described in claim 1, characterized in that, The air intake channel (2) extends upward through the upper side of the rectangular block (1), and its port is the first air outlet (24).

3. The separation control gas path distributor for a three-tower oxygen generator as described in claim 2, characterized in that, The first air inlet (23) is located on the front side of the rectangular block (1) and above the air inlet channel (2).

4. The separation control gas path distributor for a three-tower oxygen generator as described in claim 3, characterized in that, The diameter of the first air inlet (23) is equal to the diameter of the air inlet channel (2).

5. A separation control gas path distributor for a three-tower oxygen generator as described in claim 4, characterized in that, The first detection hole (22) is located on the front side of the rectangular block (1) and below the first air inlet (23).

6. A separation control gas path distributor for a three-tower oxygen generator as described in claim 5, characterized in that, The first valve through hole (21) and the second valve through hole (31) are both opened on the front side of the rectangular block (1), and each is composed of at least two round holes.

7. A separation control gas path distributor for a three-tower oxygen generator as described in claim 6, characterized in that, The first valve through hole (21) consists of two round holes arranged vertically, and the second valve through hole (31) consists of two round holes arranged horizontally.

8. A separation control gas path distributor for a three-tower oxygen generator as described in claim 1, characterized in that, The rectangular block (1) is also provided with an air outlet control channel (4) and an air outlet channel (5). The air outlet control channel (4) extends vertically and is provided with a second air inlet (41). The second air inlet (41) can communicate with three first air outlets (24). The air outlet channel (5) is located below the air outlet control channel (4) and is provided with a second air outlet (51). The lower end of the air outlet control channel (4) is provided with a third valve through hole (42). The air outlet channel (5) is provided with a fourth valve through hole (52) corresponding to the position of the third valve through hole (42). The third valve through hole (42) and the fourth valve through hole (52) cooperate to connect the air outlet control valve.

9. A separation control gas path distributor for a three-tower oxygen generator as described in claim 8, characterized in that, The outlet channel (5) is connected to a detection channel (6), which extends downward and has a second detection hole (61) for connecting an oxygen production pressure sensor.

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