A liquid carbon dioxide skid-mounted injection pump

Abstract

The utility model discloses a kind of liquid carbon dioxide pry installation injection pumps, specifically related to injection pump technical field, including body, the body inside is equipped with pump body, the liquid inlet of the pump body is connected with liquid inlet pipe, for with the pipeline communication of liquid carbon dioxide storage tank, the body one side is equipped with mounting hole, the mounting hole top wall and bottom wall are equipped with receiving groove, two receiving grooves inside are equipped with clamping plate, two clamping plates are close to the side and are fixed with first rubber sealing strip, the body inside is equipped with cleaning cavity, the liquid inlet pipe is arranged in cleaning cavity inside.The utility model separates the pipeline of liquid carbon dioxide storage tank and the body inside by cleaning cavity with liquid inlet pipe, and realizes sealing by the contact of two clamping plates and pipeline outer wall, effectively prevent outside dust and impurity pollution pipeline and the connecting part of liquid inlet pipe, then utilize shower nozzle flush pipeline to keep clean, avoid impurity into liquid inlet pipe inside in the process of disassembly, to guarantee the purity of carbon dioxide.

Description

Technical Field

[0001] This utility model relates to the field of injection pump technology, and more specifically to a liquid carbon dioxide skid-mounted injection pump. Background Technology

[0002] Carbon dioxide injection for enhanced oil recovery (EOR) is an important technique in oilfield gas injection production. This technology is applicable to conventional reservoirs, especially low-permeability and ultra-low-permeability reservoirs, and can significantly improve crude oil recovery rates, meeting the needs of oilfield development. Furthermore, it can solve the problem of carbon dioxide sequestration, protecting the atmospheric environment. Carbon dioxide can be recovered from emissions from industrial facilities such as power plants, fertilizer plants, cement plants, chemical plants, oil refineries, and natural gas processing plants, achieving both greenhouse gas emission reduction and increased oil and gas production—a win-win situation. Given the energy shortage and the need for energy conservation and emission reduction, this technology has a very broad prospect for widespread application. To improve storage and transportation efficiency and reduce the high cost of injecting vaporized liquid carbon dioxide, cryogenic liquid carbon dioxide injection is often used in field operations. Currently, liquid carbon dioxide skid-mounted injection pumps consist of a feed pump, injection pump, flow meter, accumulator, chassis, and injection pipe. When using a liquid carbon dioxide skid-mounted injection pump, automatic valve control, flow regulation, and temperature and pressure monitoring are possible.

[0003] For example, a liquid carbon dioxide skid-mounted injection pump with prior art publication number CN221347151U uses an elastic element, piston, limiting component, pressure relief pipe, and fixed pipe. When the heating wire thaws the interface of the injection pipe, some carbon dioxide vaporizes, temporarily increasing the pressure at the interface. This pushes the piston to move, expanding the space at the interface and thus achieving pressure relief, preventing pipe bursts or leaks. Furthermore, by using a monitoring ruler and pointer, it is possible to determine whether the elastic element is damaged during routine maintenance, improving maintenance efficiency.

[0004] However, the above-mentioned existing technology still has the following problems when in use: When transporting liquid carbon dioxide, the pipeline of the liquid carbon dioxide storage tank is connected to the inlet pipe on the pump body. Since the pipeline joints are generally directly exposed to the external environment, and the oilfield equipment generates a lot of dust and impurities during operation, these dust and impurities fall onto the pipeline interface. When the interface is disassembled, the dust and impurities will enter the inlet pipe, affecting the purity of the subsequent liquid carbon dioxide, thus affecting the injection effect. Utility Model Content

[0005] To overcome the aforementioned deficiencies of the prior art, this utility model provides a skid-mounted liquid carbon dioxide injection pump. A cleaning chamber separates the inlet pipe and the liquid carbon dioxide storage tank from the machine body, and two clamps seal the connection between the inlet pipe and the outer wall of the pipe, effectively preventing external dust and impurities from contaminating the connection between the pipe and the inlet pipe. A nozzle is then used to flush the pipe to maintain cleanliness, preventing impurities from entering the inlet pipe during disassembly, thus ensuring the purity of the carbon dioxide and solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a skid-mounted liquid carbon dioxide injection pump, comprising a body, a pump body inside the body, an inlet pipe connected to the inlet of the pump body for connecting to the pipeline of a liquid carbon dioxide storage tank, an installation hole on one side of the body, a receiving groove on the top and bottom walls of the installation hole, a clamping plate inside each of the two receiving grooves, a first rubber sealing strip fixed on the side of the two clamping plates close to each other, a cleaning chamber inside the body, the inlet pipe located inside the cleaning chamber, a bracket fixed on the inner wall of the top of the cleaning chamber, and nozzles fixed on the inner wall of the bracket and the top wall of the cleaning chamber.

[0007] In a preferred embodiment, electric push rods are fixedly provided on the opposite side of the two storage slots. The piston rods of the electric push rods are fixed to the clamping plates, and the height of the clamping plates is automatically adjusted by means of the electric push rods, thereby improving the efficiency of pipeline installation.

[0008] In a preferred embodiment, a second rubber sealing strip is provided between the clamping plate and the storage groove to fill the gap between them, thereby improving the sealing performance between the clamping plate and the storage groove.

[0009] In a preferred embodiment, a liquid storage tank is fixedly provided at the top of the cleaning chamber. The liquid storage tank stores cleaning liquid, and a water pump is connected to the front end of the liquid storage tank. The water pump is connected to multiple nozzles through a water delivery pipe, and the cleaning liquid is automatically delivered by the water pump, thereby improving the cleaning efficiency.

[0010] In a preferred embodiment, a rubber sealing ring is embedded in the inner wall of one side of the cleaning chamber, and the rubber sealing ring is sleeved on the outer wall of the inlet pipe to improve the sealing between the inlet pipe and the cleaning chamber.

[0011] In a preferred embodiment, a filling pipe extends through the top of the storage tank, the filling pipe is connected to the inside of the storage tank, and a threaded cap is threadedly connected to the top of the filling pipe to facilitate the replenishment of cleaning fluid into the storage tank by the operator.

[0012] In a preferred embodiment, a drain valve extends through the rear end of the machine body and is connected to the interior of the cleaning chamber for discharging wastewater generated during cleaning.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] This utility model separates the inlet pipe and the liquid carbon dioxide storage tank from the inside of the machine by setting a cleaning chamber inside the machine body, and achieves a seal by contacting the outer wall of the pipe with two clamps, effectively preventing external dust and impurities from contaminating the connection between the pipe and the inlet pipe.

[0015] In addition, by rinsing the pipeline with nozzles on the inner walls of the cleaning chamber and the support, the cleanliness of the inlet pipe and pipeline can be maintained, preventing impurities from entering the inlet pipe during subsequent disassembly, thereby ensuring the purity of carbon dioxide. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the pump body, inlet pipe, and support of this utility model;

[0018] Figure 3 This is a partial sectional view of the body of this utility model;

[0019] Figure 4 This is a cross-sectional view of the cleaning chamber of this utility model;

[0020] Figure 5 for Figure 4 Enlarged view of part A in the image;

[0021] Figure 6 This is a rear view of the overall structure of this utility model.

[0022] The attached diagram is labeled as follows: 1. Body; 2. Pump body; 3. Inlet pipe; 4. Mounting hole; 5. Storage slot; 6. Clamping plate; 7. First rubber sealing strip; 8. Cleaning chamber; 9. Bracket; 10. Nozzle; 11. Electric push rod; 12. Second rubber sealing strip; 13. Storage tank; 14. Water pump; 15. Rubber sealing ring; 16. Inlet pipe; 17. Threaded cap; 18. Drain valve. Detailed Implementation

[0023] 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.

[0024] Refer to the instruction manual appendix Figures 1-6This utility model provides a skid-mounted liquid carbon dioxide injection pump, including a body 1, a pump body 2 inside the body 1, and an inlet pipe 3 connected to the inlet of the pump body 2 for connecting to the pipeline of a liquid carbon dioxide storage tank. A mounting hole 4 is provided on one side of the body 1. A receiving groove 5 is provided on the top and bottom walls of the mounting hole 4. A clamping plate 6 is provided inside each of the two receiving grooves 5. A first rubber sealing strip 7 is fixed on the side of the two clamping plates 6 that are close to each other. An electric push rod 11 is fixed on the side of the two receiving grooves 5 that are far apart from each other. The piston rod of the electric push rod 11 is fixed to the clamping plate 6. A second rubber sealing strip 12 is provided between the clamping plate 6 and the receiving groove 5 to fill the gap between them.

[0025] The machine body 1 has a cleaning chamber 8 inside, and the liquid inlet pipe 3 is located inside the cleaning chamber 8. A bracket 9 is fixedly installed on the inner wall of the top of the cleaning chamber 8. Spray nozzles 10 are fixedly installed on the inner wall of the bracket 9 and the top wall of the cleaning chamber 8. A liquid storage tank 13 is fixedly installed on the top of the cleaning chamber 8. The liquid storage tank 13 stores cleaning liquid (e.g., water). A water pump 14 is connected to the front end of the liquid storage tank 13. The water pump 14 is connected to multiple spray nozzles 10 through a water supply pipe.

[0026] A drain valve 18 is inserted through the rear end of the body 1. The drain valve 18 is connected to the inside of the cleaning chamber 8. The drain valve 18 is a valve used to discharge impurities, dirt, water and other substances in pipes or equipment. Opening the drain valve 18 will discharge sewage.

[0027] In actual use, two electric push rods 11 are used to drive the two clamping plates 6 to retract into the storage tank 5. Then, the staff inserts the pipeline on the liquid carbon dioxide storage tank into the cleaning chamber 8 through the mounting hole 4. Subsequently, the electric push rods 11 are used to drive the clamping plates 6 to move, so that the first rubber sealing strip 7 on the clamping plates 6 is tightly attached to the outer wall of the pipeline to seal it, preventing dust and impurities in the external environment from contaminating the inside of the cleaning chamber 8. This keeps the inlet pipe 3 and the pipeline clean. In addition, when the liquid carbon dioxide storage tank is replaced, the water pump 14 is activated to deliver the cleaning fluid in the storage tank 13 to multiple nozzles 10. The cleaning fluid sprayed by the nozzles 10 can clean the dust and impurities adhering to the pipeline, avoiding dust and impurities contaminating the inside of the inlet pipe 3 when the pipeline and the inlet pipe 3 are subsequently disassembled, thereby improving the cleanliness of the carbon dioxide.

[0028] Refer to the instruction manual appendix Figure 2 and Figure 4 A rubber sealing ring 15 is embedded in the inner wall of one side of the cleaning chamber 8. The rubber sealing ring 15 is sleeved on the outer wall of the liquid inlet pipe 3. The rubber sealing ring 15 is soft and can play a sealing role between the liquid inlet pipe 3 and the cleaning chamber 8, preventing water from entering the machine body 1 and affecting the normal use of the equipment inside the machine body 1.

[0029] like Figure 1, Figure 3 and Figure 4 As shown, a liquid filling pipe 16 extends through the top of the liquid storage tank 13, and the liquid filling pipe 16 communicates with the inside of the liquid storage tank 13. A threaded cap 17 is threadedly connected to the top of the liquid filling pipe 16. When the operator loosens the threaded cap 17, cleaning fluid can be added to the inside of the liquid storage tank 13 through the liquid filling pipe 16, thereby ensuring the normal operation of the cleaning function.

[0030] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A skid-mounted liquid carbon dioxide injection pump, comprising a body (1), characterized in that: The machine body (1) is equipped with a pump body (2) inside. The inlet of the pump body (2) is connected to an inlet pipe (3) for connecting to the pipeline of the liquid carbon dioxide storage tank. The body (1) has an installation hole (4) on one side. The top and bottom walls of the installation hole (4) are provided with storage grooves (5). The two storage grooves (5) are provided with clamps (6). The two clamps (6) are fixed with a first rubber sealing strip (7) on the side close to each other. The machine body (1) has a cleaning chamber (8) inside, the liquid inlet pipe (3) is located inside the cleaning chamber (8), the top inner wall of the cleaning chamber (8) is fixedly provided with a bracket (9), and the inner wall of the bracket (9) and the top wall of the cleaning chamber (8) are both fixedly provided with nozzles (10).

2. The liquid carbon dioxide skid-mounted injection pump according to claim 1, characterized in that: Two storage slots (5) are each fixedly provided with an electric push rod (11) on the side away from each other, and the piston rod of the electric push rod (11) is fixed to the clamp plate (6).

3. A skid-mounted liquid carbon dioxide injection pump according to claim 1, characterized in that: A second rubber sealing strip (12) is provided between the clamping plate (6) and the storage groove (5) to fill the gap between them.

4. A skid-mounted liquid carbon dioxide injection pump according to claim 1, characterized in that: The top of the cleaning chamber (8) is fixedly provided with a liquid storage tank (13), which stores cleaning liquid inside. The front end of the liquid storage tank (13) is connected to a water pump (14), which is connected to multiple nozzles (10) through a water supply pipe.

5. A skid-mounted liquid carbon dioxide injection pump according to claim 1, characterized in that: A rubber sealing ring (15) is embedded in the inner wall of one side of the cleaning chamber (8), and the rubber sealing ring (15) is fitted on the outer wall of the liquid inlet pipe (3).

6. A skid-mounted liquid carbon dioxide injection pump according to claim 4, characterized in that: The top of the liquid storage tank (13) is connected to a liquid filling pipe (16), which is connected to the inside of the liquid storage tank (13). A threaded cap (17) is threadedly connected to the top of the liquid filling pipe (16).

7. A skid-mounted liquid carbon dioxide injection pump according to claim 1, characterized in that: A drain valve (18) runs through the rear end of the machine body (1), and the drain valve (18) is connected to the interior of the cleaning chamber (8).

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