Chemical injection pry bar

Abstract

The utility model belongs to pry block technical field, especially a kind of chemical injection pry block.The utility model discloses pry block body, two reagent tank groups are arranged on pry block body, each reagent tank group is integrated with several reagent tanks connected in turn;Each reagent tank is equipped with one pressure detector and three liquid level instruments, and three liquid level instruments are respectively first liquid level meter for monitoring alarm, second liquid level meter for safety interlock and third liquid level meter for on-site display;The outlet of reagent tank is connected with hand regulating valve and diaphragm metering pump.The utility model is set to multiple rectangular reagent tanks together to form a pry block body, can effectively save space, and set multiple detection equipment, effectively improve injection efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of skid technology, and in particular relates to a chemical injection skid. Background Technology

[0002] In process industries such as oil and gas, a series of complex problems arise during the extraction, transportation, and processing of raw materials and products. If left uncontrolled, these problems can lead to equipment damage, pipeline blockages, decreased production efficiency, safety hazards, and substandard product quality. The purpose of chemical injection skids is to prevent and resolve these problems by injecting specific chemical agents, thereby ensuring safe, stable, and efficient production operations.

[0003] Traditional chemical injection skids are bulky, have low integration, require frequent manual flow adjustments, and have high installation and maintenance costs. Furthermore, they lack sufficient reagent mixing precision, cannot adapt to complex working conditions (such as high pressure and highly corrosive environments), and lack real-time monitoring and control, resulting in reagent waste or low injection efficiency, as well as operational safety and environmental risks. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this invention provides a chemical injection skid. This invention features high integration and high injection efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A chemical injection skid includes a skid body with two chemical tank groups arranged on the skid body. Each chemical tank group integrates several chemical tanks connected in sequence. Each chemical tank is equipped with a pressure detector and three level gauges, namely a first level gauge for monitoring and alarm, a second level gauge for safety interlock, and a third level gauge for on-site display. The outlet of the chemical tank is connected to a manual regulating valve and a diaphragm metering pump.

[0006] Preferably, the liquid medium surface layer of the reagent tank is provided with a liquid nitrogen sealing layer, and a breather valve is installed on the reagent tank.

[0007] Preferably, dampers are connected to both the inlet and outlet of the diaphragm metering pump.

[0008] Preferably, the inlet of the diaphragm metering pump is also connected to a calibration column, and the outlet of the diaphragm metering pump is also equipped with a reflux control valve.

[0009] Preferably, the manual regulating valve is an injection speed control valve.

[0010] Preferably, the injection speed control valve is one of corrosion-resistant 316 / 316L, duplex steel 2205, and super duplex steel 2507.

[0011] Preferably, two adjacent medicine tanks are separated by a partition, and a maintenance passage is provided between the two medicine tank groups.

[0012] The advantages of this utility model are: (1) This utility model integrates multiple rectangular medicine tanks into a skid body, and separates adjacent medicine tanks with partitions, which can effectively avoid gaps between the tanks; at the same time, the medicine tanks, diaphragm metering pumps, injection speed control valves, etc. are all integrated together, which can effectively save space and has a high degree of automation.

[0013] (2) This utility model adopts a special injection speed control valve. According to the process conditions, one of corrosion-resistant 316 / 316L, duplex steel 2205 and super duplex steel 2507 is selected to meet various corrosive environments. The pressure design adopts ASME certification. Nitrogen sealing is used on the liquid surface of the hazardous agent tank to reduce the pollution of the environment caused by leakage. At the same time, a diaphragm metering pump is used to achieve zero leakage.

[0014] (3) In the design process of equipment layout, this utility model fully considers maintainability, operability, safety and reliability. The safety circuit meets the SIL2 level, which reduces maintenance costs. In the modular equipment layout design process, maintainability is fully considered, which reduces downtime. Attached Figure Description

[0015] Figure 1 This is a plan view of the present invention.

[0016] Figure 2 This is the pharmaceutical container of this utility model.

[0017] The meanings of the symbols in the diagram are as follows: 1-Skid body, 2-Chemical tank assembly, 3-Chemical tank, 4-Maintenance passage, 5-Breathing valve, 6-Calibration column, 7-Manual regulating valve, 8-Diaphragm metering pump, 9-Damper, 10-Return control valve. Detailed Implementation

[0018] like Figure 1-2 As shown, a chemical injection skid includes a skid body 1 with two chemical tank groups 2 arranged on it. Each chemical tank group 2 integrates several chemical tanks 3 connected in sequence. Each chemical tank 3 is equipped with a pressure monitor and three level gauges: a first level gauge for monitoring and alarm, a second level gauge for safety interlock, and a third level gauge for on-site display. The outlet of each chemical tank 3 is connected to a manual regulating valve 7 and a diaphragm metering pump 8. The level gauges are dual level gauges, separating control and safety. The skid body 1 is also designed with pressure measurement alarm, level measurement alarm, safety valve, and overflow pipe to ensure the process safety of the chemical tanks 3.

[0019] The reagent tank 3 is designed for normal pressure and temperature. The injection point control includes a flow injection valve, flow regulation, and real-time monitoring; it can also be designed as a remote control valve upon request. A liquid nitrogen sealing layer is installed on the liquid surface of the medium in reagent tank 3. A breather valve 5 is installed on reagent tank 3. To avoid risks associated with flammable or explosive media, the injection accuracy of reagent tank 3 is: error < ±2%.

[0020] Specifically, the diaphragm metering pump 8 is an injection pump with an adjustable stroke ratio of 10:1. The adjustment is achieved via DCS / PLC remote control, allowing users to manually or automatically adjust the injection flow rate remotely via CCR. Each user utilizes a high-precision injection speed control valve to precisely control the injection volume, and a high-precision mass flow meter monitors this in real time. A suitable diaphragm metering pump 8 is selected based on the injection pressure and flow rate requirements. Dampers 9 are installed at both the pump's inlet and outlet to smooth pressure pulsations. A calibration column 6 is also connected to the inlet of the diaphragm metering pump 8 to check the accuracy of the pump's flow rate as needed. A reflux control valve 10 is installed at the outlet of the diaphragm metering pump 8 to further stabilize the pump's outlet pressure. The diaphragm metering pump 8 is an API-compliant diaphragm metering pump. In addition to the pump's pressure relief valve, the outlet pipeline is designed with a reflux pipe, pressure control valve, and safety valve to ensure the safety of the pump and the outlet pipeline system.

[0021] Furthermore, the manual regulating valve 7 is an injection speed control valve used to regulate the injection flow rate, which is monitored in real time by a flow meter. A field indicator is installed near the manual regulating valve 7. For high-pressure applications, the manual regulating valve 7 uses a special high-pressure injection speed control valve (IRCD). The injection speed control valve is one of the following: corrosion-resistant 316 / 316L, duplex steel 2205, or super duplex steel 2507.

[0022] Two adjacent chemical tanks 3 are separated by a partition, and an inspection passage 4 is provided between the two chemical tank groups 2. The skid body 1 can adapt to extreme environments (pressure resistance ≥690 bar, temperature range -40℃~150℃).

[0023] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A chemical injection skid, characterized in that: Includes a skid body (1), on which two chemical tank groups (2) are arranged, each chemical tank group (2) integrates several chemical tanks (3) connected in sequence; each chemical tank (3) is equipped with a pressure monitor and three level gauges, the three level gauges being a first level gauge for monitoring and alarm, a second level gauge for safety interlocking and a third level gauge for on-site display; the outlet of the chemical tank (3) is connected to a manual regulating valve (7) and a diaphragm metering pump (8).

2. A chemical injection skid according to claim 1, characterized in that: The liquid medium surface layer of the medicine tank (3) is provided with a liquid nitrogen sealing layer, and a breathing valve (5) is installed on the medicine tank (3).

3. A chemical injection skid according to claim 1, characterized in that: The inlet and outlet of the diaphragm metering pump (8) are both connected to dampers (9).

4. A chemical injection skid according to claim 1, characterized in that: The inlet of the diaphragm metering pump (8) is also connected to a calibration column (6), and the outlet of the diaphragm metering pump (8) is also equipped with a reflux control valve (10).

5. A chemical injection skid according to claim 1, characterized in that: The manual regulating valve (7) is an injection speed control valve.

6. A chemical injection skid according to claim 5, characterized in that: The injection speed control valve is one of corrosion-resistant 316 / 316L, duplex steel 2205, and super duplex steel 2507.

7. A chemical injection skid according to claim 1, characterized in that: The two adjacent medicine tanks (3) are separated by a partition, and a maintenance passage (4) is provided between the two medicine tank groups (2).

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