Compressed air pressure regulating system

Abstract

The utility model belongs to the technical field of compressed air pressure regulation, and particularly relates to a compressed air pressure regulation system which is characterized in that a first teletransmission pressure gauge is arranged on an output pipeline of a purified compressed air storage tank for an instrument, and a second teletransmission pressure gauge is arranged on an output pipeline of a compressed air storage tank for desulfurization; a first regulating valve is arranged on the gas supply main pipe between the first gas supply branch pipe and the second gas supply branch pipe, and the first regulating valve is interlocked with a circuit of the first teletransmission pressure gauge; a second regulating valve is arranged on the gas supply main pipe between the second gas supply branch pipe and the third gas supply branch pipe; the second regulating valve is interlocked with a circuit of the second teletransmission pressure gauge; and a third teletransmission pressure gauge is arranged on an output pipeline of the compressed air storage tank for production and dust removal. The pressure interlocking device has the advantages that compressed air user pressure interlocking respective actions are realized through the two regulating valve groups, the pressure stability of the purified compressed air for the instrument is ensured, and the safety production of a coking plant is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of compressed air pressure regulation, and in particular relates to a compressed air pressure regulation system. Background Art

[0002] Compressed air, as an important power source, is widely used in various fields of industrial production. At present, the users of compressed air in coking plants are generally: purified compressed air for instruments, compressed air for desulfurization, and compressed air for production and dust removal. Among them, purified compressed air for instruments is mainly used as the power source of precision instruments and meters such as pneumatic control valves in the factory. The operation of these instruments and meters directly affects the safe production in the factory. Compressed air for desulfurization is used as compressed air for the desulfurization regeneration tower of the chemical desulfurization unit, and the air needs to be supplied separately. Compressed air for production and dust removal is widely used in the cleaning, power, and dust removal process links of coking plant equipment. Obviously, the importance is from high to low, which is purified compressed air for instruments, compressed air for desulfurization, and compressed air for production and dust removal. The stable supply of compressed air in each part is of great significance to the safe production of coking plants.

[0003] The Chinese utility model patent application number 201020621732.X discloses a pressure gauge detector, including a standard gauge, an air circuit, a front-end pressure reducing device and a fine-tuning pressure reducing device. The front-end pressure reducing device is provided with a compressed air inlet, and the outlet of the front-end pressure reducing device is connected to the fine-tuning pressure reducing device through an air circuit. The air circuit of the outlet of the fine-tuning pressure reducing device is divided into two, one of which is connected to the standard gauge, and the other is provided with an interface for the calibrated pressure gauge. The front-end pressure reducing device of the pressure gauge detector is used to reduce pressure, reduce the air source pressure to the rated pressure of the instrument, and the fine-tuning pressure reducing device can fine-tune the air pressure within the rated pressure range, thereby providing various pressure values ​​within the rated pressure range for the calibrated gauge and the standard gauge.

[0004] The disadvantage of the existing technology is that it cannot be applied to the different flow and pressure requirements of the three different compressed air users in the coking plant. In addition, if the pressure reducing device fails, it will inevitably cause production stagnation and cannot ensure safe production. Utility Model Content

[0005] The purpose of the utility model is to provide a compressed air pressure regulating system, which overcomes the shortcomings of the prior art and can meet the flow and pressure regulation of three different levels of compressed air users, namely, purified compressed air for instruments, compressed air for desulfurization, and compressed air for production and dust removal, so as to maintain a stable supply of purified compressed air for instruments in the coking plant and ensure safe production.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0007] A compressed air pressure regulating system comprises an air supply main, a purified compressed air storage tank for instruments, a compressed air storage tank for desulfurization, and a compressed air storage tank for production and dust removal. The air supply main is connected to the purified compressed air storage tank for instruments through a first air supply branch pipe, the air supply main is connected to the compressed air storage tank for desulfurization through a second air supply branch pipe, and the air supply main is connected to the compressed air storage tank for production and dust removal through a third air supply branch pipe. The system is characterized in that a first remote pressure gauge is provided on the output pipeline of the purified compressed air storage tank for instruments, and a second remote pressure gauge is provided on the output pipeline of the compressed air storage tank for desulfurization; a first regulating valve is provided on the air supply main between the first air supply branch pipe and the second air supply branch pipe, and the circuit of the first regulating valve and the first remote pressure gauge is interlocked; a second regulating valve is provided on the air supply main between the second air supply branch pipe and the third air supply branch pipe, and the circuit of the second regulating valve and the second remote pressure gauge is interlocked; a third remote pressure gauge is provided on the output pipeline of the compressed air storage tank for production and dust removal.

[0008] At least one of the purified compressed air storage tank for instruments, the compressed air storage tank for desulfurization, and the compressed air storage tank for production and dust removal is provided with a tank control valve on its air inlet pipe and air outlet pipe respectively.

[0009] A bypass pipe is provided between the air inlet pipe and the air outlet pipe of at least one of the instrument purification compressed air storage tank, the desulfurization compressed air storage tank, and the production and dust removal compressed air storage tank, and a bypass valve is provided on the bypass pipe.

[0010] A short-circuit pipe is provided between the inlet pipe and the outlet pipe of at least one of the first regulating valve and the second regulating valve, and a short-circuit valve is provided on the short-circuit pipe.

[0011] An inspection valve is respectively disposed on the inlet pipe and the outlet pipe of at least one of the first regulating valve and the second regulating valve.

[0012] The tank control valve, bypass valve, short-circuit valve and inspection valve are all manual valves.

[0013] The third remote pressure gauge does not participate in the circuit interlocking control of the first regulating valve and the second regulating valve.

[0014] The compressed air storage tanks arranged behind the first air supply branch pipe, the second air supply branch pipe and the third air supply branch pipe are arranged in order of safety importance from high to low.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1) Through two sets of regulating valve groups, the pressure interlock of purified compressed air for instruments and compressed air for desulfurization can be realized and respectively operated, so as to ensure the stability of the pressure of purified compressed air for instruments and guarantee the safe production of the coking plant.

[0017] 2) Two groups of regulating valve groups are arranged in series, one group is arranged on the compressed air main pipes for production, dust removal and desulfurization, and the other group is arranged on the compressed air pipelines for production and dust removal, so as to achieve independent and precise regulation of the two most important compressed air according to the importance of compressed air users from high to low, creating greater economic and social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a process flow chart of an embodiment of the utility model.

[0019] In the figure: 1-first regulating valve, 2-second regulating valve, 3-first remote pressure gauge, 4-second remote pressure gauge, 5-third remote pressure gauge, 6-purified compressed air storage tank for instruments, 7-compressed air storage tank for desulfurization, 8-compressed air storage tank for production and dust removal, 9-first air supply branch pipe, 10-second air supply branch pipe, 11-third air supply branch pipe, 12-tank control valve, 13-bypass pipe, 14-bypass valve, 15-short-circuit pipe, 16-short-circuit valve, 17-inspection valve. DETAILED DESCRIPTION

[0020] The technical solution of the present utility model will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the specific embodiments required to be used in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the specific embodiments described below are some implementation methods of the utility model. For ordinary technicians in this field, other specific embodiments can be obtained based on these specific embodiments without paying creative work.

[0022] The components of the embodiments of the present invention generally described and shown in the specific embodiments herein can be arranged and designed in countless different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the specific embodiments is not intended to limit the scope of the utility model claimed, but only represents the selected embodiments of the utility model.

[0023] See Figure 1, is a process flow chart of an embodiment of a compressed air pressure regulating system of the utility model, comprising a gas supply main pipe, a purified compressed air storage tank 6 for instruments, a compressed air storage tank 7 for desulfurization, and a compressed air storage tank 8 for production and dust removal. The gas supply main pipe is connected to the purified compressed air storage tank 6 for instruments through a first gas supply branch pipe 9, the gas supply main pipe is connected to the compressed air storage tank 7 for desulfurization through a second gas supply branch pipe 10, and the gas supply main pipe is connected to the compressed air storage tank 8 for production and dust removal through a third gas supply branch pipe 11. A first remote pressure gauge 3 is provided on the outlet pipeline, and a second remote pressure gauge 4 is provided on the output pipeline of the compressed air storage tank 7 for desulfurization; a first regulating valve 1 is provided on the gas supply main pipe between the first gas supply branch pipe 9 and the second gas supply branch pipe 10, and the circuit of the first regulating valve 1 is interlocked with the first remote pressure gauge 3; a second regulating valve 2 is provided on the gas supply main pipe between the second gas supply branch pipe 10 and the third gas supply branch pipe 11, and the circuit of the second regulating valve 2 is interlocked with the second remote pressure gauge 4; a third remote pressure gauge 5 is provided on the output pipeline of the compressed air storage tank 8 for production and dust removal.

[0024] The coking plant produces qualified purified compressed air for instruments after being processed by centrifugal air compressors, deoilers, dryers and dust collectors in sequence. The purified compressed air for instruments is supplied in three ways. One way is sent to the purified compressed air users for instruments in the plant through the purified compressed air storage tank 6, one way is sent to the desulfurization compressed air users in the plant through the first regulating valve 1 and the desulfurization compressed air storage tank 7, and one way is sent to the production and dust removal compressed air users in the plant through the first regulating valve 1, the second regulating valve 2 and the production and dust removal compressed air storage tank 8.

[0025] The compressed air storage tanks arranged behind the first air supply branch pipe 9, the second air supply branch pipe 10, and the third air supply branch pipe 11 are arranged in descending order of safety importance, which are compressed air for instrument purification, compressed air for desulfurization, and compressed air for production and dust removal.

[0026] Tank control valves 12 are provided on the air inlet pipe and the air outlet pipe of the purified compressed air storage tank 6 for instruments, the compressed air storage tank 7 for desulfurization, and the compressed air storage tank 8 for production and dust removal. A bypass pipe 13 is provided between the air inlet pipe and the air outlet pipe of the purified compressed air storage tank 6 for instruments, the compressed air storage tank 7 for desulfurization, and the compressed air storage tank 8 for production and dust removal, and a bypass valve 14 is provided on the bypass pipe. A short-circuit pipe 15 is provided between the inlet pipe and the outlet pipe of the first regulating valve 1 and the second regulating valve 2, and a short-circuit valve 16 is provided on the short-circuit pipe. Inspection valves 17 are provided on the inlet pipe and the outlet pipe of the first regulating valve 1 and the second regulating valve 2, respectively. In the embodiment, the tank control valve 12, the bypass valve 14, the short-circuit valve 16 and the inspection valve 17 are all manual valves, which are used to open or close under abnormal operating conditions.

[0027] In the embodiment of the utility model, the circuit interlocking action of the first regulating valve 1 is set as follows: when the pressure of the purified compressed air for instruments displayed by the first remote pressure gauge 3 is less than 0.6MPa, the opening of the first regulating valve 1 is closed; when the pressure of the purified compressed air for instruments displayed by the first remote pressure gauge 3 rises to 0.65MPa, the opening of the first regulating valve 1 is restored.

[0028] In the embodiment of the utility model, the circuit interlocking action of the second regulating valve 2 is set as follows: when the compressed air pressure for desulfurization displayed by the second remote pressure gauge 4 is less than 0.6MPa, the opening of the second regulating valve is closed; when the compressed air pressure for desulfurization displayed by the second remote pressure gauge 4 rises to 0.65MPa, the opening of the second regulating valve is restored.

[0029] The embodiment of the utility model ensures the stability of the pressure of purified compressed air for instruments through the separate actions of two groups of regulating valves. The third remote pressure gauge 5 is used for production monitoring and compressed air pressure for dust removal, and does not participate in the circuit interlocking control of the first regulating valve 1 and the second regulating valve 2.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A compressed air pressure regulating system, comprising a gas supply main, a purified compressed air storage tank for instruments, a compressed air storage tank for desulfurization, and a compressed air storage tank for production and dust removal, wherein the gas supply main is connected to the purified compressed air storage tank for instruments through a first gas supply branch pipe, the gas supply main is connected to the compressed air storage tank for desulfurization through a second gas supply branch pipe, and the gas supply main is connected to the compressed air storage tank for production and dust removal through a third gas supply branch pipe, characterized in that: A first remote pressure gauge is provided on the output pipeline of the purified compressed air storage tank for instruments, and a second remote pressure gauge is provided on the output pipeline of the compressed air storage tank for desulfurization; A first regulating valve is provided on the gas supply main pipe between the first gas supply branch pipe and the second gas supply branch pipe, and the first regulating valve is interlocked with the circuit of the first remote pressure gauge; A second regulating valve is provided on the gas supply main pipe between the second gas supply branch pipe and the third gas supply branch pipe, and the second regulating valve is interlocked with the circuit of the second remote pressure gauge; A third remote pressure gauge is provided on the output pipeline of the compressed air storage tank for production and dust removal.

2. A compressed air pressure regulating system according to claim 1, characterized in that: At least one of the purified compressed air storage tank for instruments, the compressed air storage tank for desulfurization, and the compressed air storage tank for production and dust removal is provided with a tank control valve on its air inlet pipe and air outlet pipe respectively.

3. A compressed air pressure regulating system according to claim 2, characterized in that: A bypass pipe is provided between the air inlet pipe and the air outlet pipe of at least one of the instrument purification compressed air storage tank, the desulfurization compressed air storage tank, and the production and dust removal compressed air storage tank, and a bypass valve is provided on the bypass pipe.

4. A compressed air pressure regulating system according to claim 3, characterized in that: A short-circuit pipe is provided between the inlet pipe and the outlet pipe of at least one of the first regulating valve and the second regulating valve, and a short-circuit valve is provided on the short-circuit pipe.

5. A compressed air pressure regulating system according to claim 4, characterized in that: An inspection valve is respectively disposed on the inlet pipe and the outlet pipe of at least one of the first regulating valve and the second regulating valve.

6. A compressed air pressure regulating system according to claim 5, characterized in that: The tank control valve, bypass valve, short-circuit valve and inspection valve are all manual valves.

7. A compressed air pressure regulating system according to claim 1, characterized in that: The third remote pressure gauge does not participate in the circuit interlocking control of the first regulating valve and the second regulating valve.

8. A compressed air pressure regulating system according to claim 1, characterized in that: The compressed air storage tanks arranged behind the first air supply branch pipe, the second air supply branch pipe and the third air supply branch pipe are arranged in order of safety importance from high to low.

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