Single-side sealing type stainless steel welding LNG booster pump

Abstract

The utility model discloses a single-side sealing type stainless steel welding LNG booster pump, and belongs to the technical field of LNG booster pump sealing. The single-side sealing type stainless steel welding LNG booster pump comprises a protective shell provided with a socket; the bottom cover is fixedly connected to the protective shell; the machine shell is detachably connected to the bottom cover; the impeller cover is fixedly connected to the top of the machine shell; the first sealing gasket is connected to the bottom cover; according to the utility model, the first sealing gasket, the second sealing gasket and the third sealing gasket are arranged on the bottom cover, so that the connection sealing performance between the bottom cover and the casing can be ensured, and meanwhile, a certain pressure can be applied to the first sealing gasket, the second sealing gasket and the third sealing gasket by tightening the screws in the installation process, so that the sealing performance of the casing is improved. Furthermore, the first sealing gasket, the second sealing gasket and the third sealing gasket are tightly pressed, the connection sealing type between the bottom cover and the machine shell is further guaranteed, and the sealing effect of the pump body is further guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of LNG booster pump sealing technology, and in particular to a single-sided sealed stainless steel welded booster pump. Background Technology

[0002] In LNG heavy-duty trucks, the LNG booster pump is an important device for increasing the pressure inside the LNG liquefied gas tank. Due to the ultra-low temperature operating environment, traditional LNG booster pumps have revealed many problems in actual use.

[0003] Existing LNG booster pumps typically use ordinary sealing methods, such as simple gasket seals or adhesive seals, at the connection between the impeller cover and the casing, and at the connection between the casing and the bottom cover. These sealing methods are prone to failure under long-term operation, pressure fluctuations, and complex ultra-low temperature conditions, which may lead to LNG liquefied gas leakage. LNG liquefied gas leakage not only wastes resources but also poses a great safety risk. Therefore, an LNG booster pump with good sealing performance is particularly important. Utility Model Content

[0004] The purpose of this utility model is to solve the problems mentioned in the background art, and to propose a single-sided sealed stainless steel welded LNG booster pump.

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

[0006] Single-sided sealed stainless steel welded booster pump, including:

[0007] Protective housing with socket installed;

[0008] The bottom cover is fixedly connected to the protective shell;

[0009] The casing is detachably attached to the bottom cover;

[0010] The impeller cover is fixedly connected to the top of the casing;

[0011] The first sealing gasket is attached to the bottom cover, and the top of the first sealing gasket is in contact with the bottom of the housing;

[0012] A sintered block is fixedly connected to the bottom cover, and a probe is fixedly connected to the sintered block.

[0013] Preferably, a screw is connected to the bottom cover, and the screw is threadedly connected to the housing.

[0014] Furthermore, a second sealing gasket is fixedly connected to the bottom cover, and the top of the second sealing gasket is in contact with the bottom of the housing.

[0015] Furthermore, a third sealing gasket is fixedly connected to the bottom cover, and the top of the third sealing gasket is in contact with the bottom of the housing.

[0016] Furthermore, both the first and third sealing gaskets are O-rings.

[0017] Furthermore, the second sealing gasket is a rectangular gasket.

[0018] Compared with the prior art, this utility model provides a single-sided sealed stainless steel welded booster pump, which has the following beneficial effects:

[0019] All parts of this device not described herein are the same as or can be implemented using existing technology. This utility model ensures the sealing of the connection between the bottom cover and the housing by setting a first sealing gasket, a second sealing gasket, and a third sealing gasket on the bottom cover. At the same time, during installation, tightening the screws applies a certain pressure to the first sealing gasket, the second sealing gasket, and the third sealing gasket, thereby pressing the first sealing gasket, the second sealing gasket, and the third sealing gasket, further ensuring the sealing of the connection between the bottom cover and the housing, and further ensuring the sealing effect of the pump body. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the single-sided sealed stainless steel welded LNG booster pump proposed in this utility model;

[0021] Figure 2 This is a cross-sectional view of the single-sided sealed stainless steel welded booster pump proposed in this utility model.

[0022] In the diagram: 1. Impeller cover; 2. Housing; 3. Bottom cover; 4. Probe; 5. Sintered block; 6. Protective shell; 7. First sealing gasket; 8. Second sealing gasket; 9. Third sealing gasket; 10. Screw; 11. Socket. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1:

[0025] Reference Figures 1-2 A single-sided sealed stainless steel welded LNG booster pump, including:

[0026] The protective housing 6 is equipped with the socket 11;

[0027] The bottom cover 3 is fixedly connected to the protective shell 6;

[0028] The housing 2 is detachably connected to the bottom cover 3;

[0029] Impeller cover 1 is fixedly connected to the top of housing 2;

[0030] The first sealing gasket 7 is connected to the bottom cover 3, and the top of the first sealing gasket 7 is in contact with the bottom of the housing 2;

[0031] A sintered block 5 is fixedly connected to the bottom cover 3, and a probe 4 is fixedly connected to the sintered block 5.

[0032] It should be noted that the impeller cover 1 and the casing 2 are welded together. By welding the impeller cover 1 and the casing 2 together, the sealing between the impeller cover 1 and the casing 2 can be guaranteed, thereby ensuring the sealing effect of the pump body.

[0033] Screw 10 is connected to the bottom cover 3, and screw 10 is threadedly connected to the housing 2.

[0034] It should be noted that screw 10 is a commercially available hex socket screw.

[0035] A second sealing gasket 8 is fixedly connected to the bottom cover 3, and the top of the second sealing gasket 8 is attached to the bottom of the housing 2.

[0036] A third sealing gasket 9 is fixedly connected to the bottom cover 3, and the top of the third sealing gasket 9 is attached to the bottom of the housing 2.

[0037] Both the first sealing gasket 7 and the third sealing gasket 9 are O-rings.

[0038] The second sealing gasket 8 is a rectangular gasket.

[0039] Reference Figure 2 During installation, the staff used tools to turn screw 10. Turning screw 10 would tighten three sets of sealing gaskets. The multiple sets of tightened sealing gaskets ensured that the pump body maintained good sealing performance under long-term high pressure and high frequency working conditions.

[0040] This invention, through the first sealing gasket 7, the second sealing gasket 8, and the third sealing gasket 9 set on the bottom cover 3, can ensure the sealing of the connection between the bottom cover 3 and the housing 2. At the same time, during the installation process, by tightening the screws 10, a certain pressure can be applied to the first sealing gasket 7, the second sealing gasket 8, and the third sealing gasket 9, thereby pressing the first sealing gasket 7, the second sealing gasket 8, and the third sealing gasket 9 tightly, further ensuring the sealing of the connection between the bottom cover 3 and the housing 2, and further ensuring the sealing effect of the pump body.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A single-sided sealed stainless steel welded LNG booster pump, characterized in that, include: A protective housing (6) with a socket (11) installed; The bottom cover (3) is fixedly connected to the protective shell (6); The housing (2) is detachably connected to the bottom cover (3); Impeller cover (1) is fixedly welded to the top of the casing (2); The first sealing gasket (7) is connected to the bottom cover (3), and the top of the first sealing gasket (7) is in contact with the bottom of the housing (2); A sintered block (5) is fixedly connected to the bottom cover (3), and a probe (4) is fixedly connected to the sintered block (5).

2. The single-sided sealed stainless steel welded LNG booster pump according to claim 1, characterized in that, The bottom cover (3) is connected to a screw (10), which is threadedly connected to the housing (2).

3. The single-sided sealed stainless steel welded LNG booster pump according to claim 2, characterized in that, A second sealing gasket (8) is fixedly connected to the bottom cover (3), and the top of the second sealing gasket (8) is in contact with the bottom of the housing (2).

4. The single-sided sealed stainless steel welded LNG booster pump according to claim 2, characterized in that, A third sealing gasket (9) is fixedly connected to the bottom cover (3), and the top of the third sealing gasket (9) is in contact with the bottom of the housing (2).

5. The single-sided sealed stainless steel welded LNG booster pump according to claim 4, characterized in that, Both the first sealing gasket (7) and the third sealing gasket (9) are O-ring gaskets.

6. The single-sided sealed stainless steel welded LNG booster pump according to claim 3, characterized in that, The second sealing gasket (8) is a rectangular gasket.

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