Multi-chamber chemical dosing pry

Abstract

The utility model discloses a multi-chamber chemical dosing pry, which belongs to the technical field of dosing equipment, and comprises a dosing tank, at least two independent chambers are arranged in the dosing tank at intervals and are respectively marked as a tank A and a tank B, different medicaments to be added are respectively stored in the tank A and the tank B, a suction pipeline is arranged on the dosing tank, and the dosing tank is connected with a main pump and an auxiliary pump through a pipeline. According to the multi-cavity chemical dosing pry disclosed by the utility model, different dosing points are selected through the discharge port isolation ball valve, so that the multi-target dosing requirement is met; two or more chemicals can be added into the same pry at the same time, the occupied area of the chemical adding pry and the investment cost of a project are reduced, different chemicals are treated by designing a plurality of independent mixing channels, cross contamination is avoided, the continuous chemical adding capacity and multiple safety protection mechanisms of the chemical adding pry are improved, and the chemical adding pry is suitable for large-scale popularization and application. The problem that in the prior art, medicine adding is interrupted, and medicine conveying is unstable due to pressure fluctuation is solved, and continuous and accurate medicine adding is achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of dosing equipment, specifically relating to a multi-chamber chemical dosing skid. Background Technology

[0002] A chemical dosing skid, also known as a chemical dosing system or dosing device, is widely used in oil and gas gathering and transportation systems and water treatment systems for injecting demulsifiers, defoamers, viscosity reducers, corrosion inhibitors, bactericides, and scale inhibitors. The process involves adding a measured quantity of chemicals to a mixing tank for dissolution according to user requirements, followed by pumping the solution to the dosing point via a metering pump. The dosage can be freely adjusted to meet different application needs. A chemical dosing device is a complete set of equipment that injects chemical solutions into various systems according to the process flow. These devices can be divided into three main categories based on their application: 1. Oilfield chemical dosing devices, mainly used for injecting flocculants, scale inhibitors, corrosion inhibitors, demulsifiers, and other chemicals into wellheads and other systems on oil extraction platforms; 2. Natural gas wellhead chemical dosing devices, mainly used for adding liquid chemicals to natural gas wells; 3. Water treatment chemical dosing devices, used for adding chemicals to tap water, wastewater, and sewage during water treatment processes, mainly for water supply and drainage treatment, environmental protection, and other related processes.

[0003] However, existing chemical dosing systems mostly adopt a single-pump, single-tank design, which cannot simultaneously accommodate two or more agents working within the same dosing skid. Changing agents during dosing requires stopping the delivery process and following a replacement procedure, easily leading to dosing interruptions, frequent pressure fluctuations causing unstable agent delivery, and cumbersome agent switching procedures. Furthermore, traditional systems lack redundancy protection and closed-loop safety design, which can easily cause equipment damage or environmental pollution. Therefore, there is an urgent need for a dosing skid with high reliability, continuous dosing capability, and multiple safety protection mechanisms. Utility Model Content

[0004] The purpose of this invention is to provide a multi-chamber chemical dosing skid, which aims to solve the aforementioned problems existing in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A multi-chamber chemical dosing skid includes a dosing tank, which is divided into at least two independent chambers, labeled as tank A and tank B, respectively. Tanks A and B store different reagents to be added. The dosing tank is equipped with a suction line and a main pump and an auxiliary pump connected by a pipeline. Both the main pump and the auxiliary pump are diaphragm pumps. The main pump and the auxiliary pump are connected in parallel and equipped with a suction line isolation ball valve.

[0007] Both the main pump and the auxiliary pump are equipped with pressure transmitters at their outlets, and both the main pump and the auxiliary pump are equipped with pulsation dampers at their discharge ports.

[0008] The dosing tank is equipped with a control panel at one end. The suction line of the multi-chamber chemical dosing skid is also equipped with a pressure relief valve, a check valve, an outlet isolation ball valve, and a calibration gauge isolation valve.

[0009] In a preferred embodiment of this utility model, the main pump and the auxiliary pump are redundantly designed and automatically switched via the control panel.

[0010] In a preferred embodiment of this utility model, the inhalation pipeline isolation ball valve is a dual-valve group structure, corresponding to tank A and tank B respectively. When switching medications, the valve of the current tank is closed and the valve of the other tank is opened.

[0011] In a preferred embodiment of this utility model, the pressure transmitters of the main pump and the auxiliary pump are linked to the control panel. When a diaphragm rupture or overpressure is detected, the pump trip protection is triggered to stop the current pump operation.

[0012] In a preferred embodiment of this invention, the vent of the pressure relief valve is connected to the dosing tank.

[0013] In a preferred embodiment of this utility model, both the main pump and the auxiliary pump are equipped with an automatic stroke adjustment device and support 0-100% flow rate adjustment.

[0014] In a preferred embodiment of this utility model, the check valve is located between the discharge ports of the main pump and the auxiliary pump and the pulsation damper.

[0015] In a preferred embodiment of this utility model, the discharge port isolation ball valve has a multi-channel structure.

[0016] In summary, the beneficial effects of the above-described technical solutions conceived by this utility model compared with the prior art include:

[0017] This utility model's multi-chamber chemical dosing skid allows for main pump startup via a control panel. The chemical agent enters the main pump from tank A (a dosing tank) through the suction line isolation ball valve. After pressurization, the pressure is stabilized by a pulsation damper and then delivered to the dosing point via the discharge port isolation ball valve. During redundancy switching: if the main pump fails or a chemical agent needs to be switched, the current suction line isolation ball valve is closed, and the suction line isolation ball valve of another tank B is opened. The auxiliary pump is automatically activated via the control panel, simultaneously switching to tank B for chemical supply, ensuring continuous operation. A check valve prevents backflow of chemical agent during shutdown, thus preventing contamination of the dosing tank. Pressure protection: when the pressure transmitter detects abnormal pressure, it triggers a shutdown and... Alarm; pressure relief valve releases pressure to the dosing tank to prevent equipment damage; multi-channel switching: different dosing points can be selected through the discharge port isolation ball valve to meet multi-target dosing needs; thus, two or more agents can be added simultaneously in the same skid, and different agents can be added by switching valves, reducing the footprint of the dosing skid and the investment cost of the project. By designing multiple independent mixing channels, different chemicals can be handled separately to avoid cross-contamination, improve the continuous dosing capacity of the dosing skid and multiple safety protection mechanisms, solve the problems of dosing interruption and pressure fluctuation leading to unstable agent delivery in the existing technology, and achieve continuous and accurate dosing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0020] Figure 3 This is a side view of the structure of this utility model.

[0021] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1. Dosing tank; 2. Auxiliary pump; 3. Suction line isolation ball valve; 4. Pressure transmitter; 6. Calibration gauge isolation valve; 7. Pulse damper; 9. Pressure relief valve; 10. Check valve; 12. Discharge port isolation ball valve; 13. Control panel; 14. Main pump. Detailed Implementation

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.

[0023] Example:

[0024] like Figure 1-3 As shown, this embodiment provides a multi-chamber chemical dosing skid, including a dosing tank 1. The dosing tank 1 is divided into at least two independent chambers, which are respectively labeled as tank A and tank B. Tanks A and B store different drugs to be added. The dosing tank 1 is provided with a suction line and is connected to a main pump 14 and an auxiliary pump 2. Both the main pump 14 and the auxiliary pump 2 are diaphragm pumps. The main pump 14 and the auxiliary pump 2 are connected in parallel and are provided with a suction line isolation ball valve 3.

[0025] Pressure transmitters 4 are installed at the outlets of both the main pump 14 and the auxiliary pump 2, and pulsation dampers 7 are installed at the discharge ports of both the main pump 14 and the auxiliary pump 2.

[0026] The dosing tank 1 is equipped with a control panel 13 at one end. The suction line of the multi-chamber chemical dosing skid is also equipped with a pressure relief valve 9, a check valve 10, an outlet isolation ball valve 12, and a calibration gauge isolation valve 6.

[0027] In a specific application scenario, the main pump 14 is started via control panel 13. The chemical agent enters the main pump from tank A of dosing tank 1 via suction line isolation ball valve 3. After pressurization, the pressure is stabilized by pulsation damper 7 and delivered to the dosing point via discharge port isolation ball valve 12. During redundancy switching: if the main pump 14 fails or a chemical agent needs to be switched, the current suction line isolation ball valve 3 is closed, and the suction line isolation ball valve 3 of another tank B is opened. The auxiliary pump 2 is automatically activated via control panel 13, and the supply to tank B is switched to ensure continuous operation. A check valve 10 prevents backflow of chemical agent and contamination of dosing tank 1 during shutdown. Pressure protection: When the pressure transmitter 4 detects abnormal pressure, it triggers a shutdown and alarm. The pressure relief valve 9 releases pressure to dosing tank 1 to prevent equipment damage. Multi-channel switching: Different dosing points can be selected via discharge port isolation ball valve 12 to meet multi-target dosing needs. The following description further illustrates the multi-chamber chemical dosing skid of this invention in conjunction with this application scenario.

[0028] Furthermore, referring to Figure 1-3 The main pump 14 and the auxiliary pump 2 are redundantly designed and automatically switch between each other via the control panel 13.

[0029] In this embodiment, during the dosing process via the dosing skid, in order to ensure the stable continuous dosing, the main pump 14 and the auxiliary pump 2 are designed to be redundant. Thus, after switching control on the control panel 13, the system can automatically switch to the auxiliary pump 2 when the main pump 14 fails or the dosing agent is switched, so as to ensure the continuous dosing process.

[0030] In more detail, refer to Figure 1-3 The inhalation pipeline isolation ball valve 3 is a dual-valve assembly structure, corresponding to tank A and tank B respectively. When switching medications, the valve of the current tank is closed and the valve of the other tank is opened.

[0031] In this embodiment, in order to facilitate the switching of medication between tank A and tank B, the inhalation pipeline isolation ball valve 3 is set as a dual-valve group structure to allow medication to be delivered to tank A and tank B respectively, thereby improving the switching efficiency.

[0032] More preferably, refer to Figure 1-3 The pressure transmitters 4 of the main pump 14 and the auxiliary pump 2 are linked with the control panel 13. When a diaphragm rupture or overpressure is detected, the pump trip protection is triggered to stop the current pump operation.

[0033] In this embodiment, during the dosing process, the main pump 14 and the auxiliary pump 2 serve as core power components. The pressure transmitter 4 is set to monitor the pump outlet pressure in real time. If the pressure is too high, the control panel 13 will trigger a shutdown to avoid excessive pressure, leakage, pollution, or equipment damage.

[0034] More preferably, refer to Figure 1-3 The vent of pressure relief valve 9 is connected to dosing tank 1.

[0035] In this embodiment, during the dosing process of the dosing skid, in order to prevent equipment damage, the exhaust port of the pressure relief valve 9 is connected to the dosing tank 1, so that it can automatically release pressure when overpressure occurs, and the exhaust is connected to the storage tank to form a safety closed loop.

[0036] Furthermore, referring to Figure 1-3 Both the main pump 14 and the auxiliary pump 2 are equipped with automatic stroke adjustment devices and support 0-100% flow rate adjustment.

[0037] In this embodiment, in order to flexibly adjust the stroke of the main pump 14 and the auxiliary pump 2, both the main pump 14 and the auxiliary pump 2 are equipped with automatic stroke adjustment devices, which facilitates the flow rate adjustment of the main pump 14 and the auxiliary pump 2.

[0038] Furthermore, referring to Figure 1-3 The check valve 10 is located between the discharge ports of the main pump 14 and the auxiliary pump 2 and the pulsation damper 7.

[0039] In this embodiment, in order to maintain the unidirectional flow of the agent and prevent the agent from backflowing and contaminating the agent in the dosing tank 1 when the pump stops, a check valve 10 is installed between the discharge port of the main pump 14 and the auxiliary pump 2 and the pulsation damper 7.

[0040] More specifically, refer to Figure 1-3 The discharge port isolation ball valve 12 has a multi-channel structure.

[0041] In this embodiment, during the dosing process, the discharge port isolation ball valve 12 is configured as a multi-channel structure, thereby supporting the switching of dosing agents to multiple dosing points.

[0042] Working principle:

[0043] In the multi-chamber chemical dosing skid of this utility model, the dosing process is as follows: first, the main pump 14 is started by selecting the control panel 13. The agent enters the main pump from tank A of the dosing tank 1 through the suction pipeline isolation ball valve 3. After being pressurized, the pressure is stabilized by the pulsation damper 7 and then delivered to the dosing point through the discharge port isolation ball valve 12.

[0044] During redundancy switching: If the main pump 14 fails or the drug needs to be switched, close the current suction line isolation ball valve 3, open the suction line isolation ball valve 3 of another tank B, automatically start the auxiliary pump 2 through the control panel 13, and switch to tank B to supply drugs to ensure continuous operation. The check valve 10 prevents the drug from flowing back and contaminating the dosing tank 1 when the machine stops.

[0045] Pressure protection: When the pressure transmitter 4 detects abnormal pressure, it triggers a shutdown and alarm; the pressure relief valve 9 releases pressure to the dosing tank 1 to prevent equipment damage;

[0046] Multi-channel switching: Different dosing points can be selected through the discharge port isolation ball valve 12 to meet the needs of multi-target dosing.

[0047] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A multi-chamber chemical dosing pry, comprising a dosing tank (1), at least two independent chambers are provided in the dosing tank (1) and are marked as A tank and B tank respectively, different to-be-added agents are stored in the A tank and the B tank respectively, characterized in that : The dosing tank (1) is provided with an inhalation pipeline and connected with a main pump (14) and a secondary pump (2) through pipelines, the main pump (14) and the secondary pump (2) are diaphragm pumps, the main pump (14) and the secondary pump (2) are arranged in parallel and provided with an inhalation pipeline isolation ball valve (3); The main pump (14) and the secondary pump (2) are both equipped with a pressure transmitter (4) at the outlet end, and the main pump (14) and the secondary pump (2) are both provided with a pulsation damper (7) at the discharge port; The dosing tank (1) is provided with a control panel (13) at one end, and the inhalation pipeline of the multi-chamber chemical dosing pry is also provided with a pressure relief valve (9), a check valve (10), a discharge port isolation ball valve (12) and a calibration table isolation valve (6).

2. The multi-chambered chemical dosing sled of claim 1, wherein, The main pump (14) and the secondary pump (2) are redundantly designed and automatically switched by the control panel (13).

3. The multi-chambered chemical dosing sled of claim 1, wherein, The inhalation pipeline isolation ball valve (3) is a double valve group structure, corresponding to A tank and B tank respectively, and when switching the medicament, the valve of the current tank is closed and the valve of the other tank is opened.

4. The multi-chambered chemical dosing sled of claim 1, wherein, The pressure transmitter (4) of the main pump (14) and the secondary pump (2) is linked with the control panel (13), and when the diaphragm rupture or overpressure is detected, the pump protection is triggered, and the current pump operation is stopped.

5. The multi-chambered chemical dosing sled of claim 1, wherein, The exhaust port of the pressure relief valve (9) is connected to the dosing tank (1).

6. The multi-chambered chemical dosing sled of claim 1, wherein, The main pump (14) and the secondary pump (2) are both equipped with an automatic stroke adjusting device and support 0-100% flow adjustment.

7. The multi-chambered chemical dosing sled of claim 1, wherein, The check valve (10) is located between the discharge port of the main pump (14) and the secondary pump (2) and the pulsation damper (7).

8. The multi-chambered chemical dosing sled of claim 1, wherein, The discharge port isolation ball valve (12) is a multi-channel structure.

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