Polish rod sealer structure capable of quickly replacing seal

Abstract

The utility model relates to a polish rod sealer structure capable of quickly replacing a seal, which comprises a joint, a shell, a gland, a lifting lug and a replacement wrench, the lower end of the joint is in threaded connection with a wellhead, the upper end of the joint is in threaded connection with the shell, and the top end of the shell is in threaded connection with the gland; lifting lugs are welded to the outer portions of the connector, the shell and the gland, and the end of the replacement wrench can be inserted into the lifting lugs. The device has the advantages of simple and practical overall structure and convenience and safety in operation. By means of the polish rod sealer structure capable of rapidly replacing the seal, the sealing element in the sealer can be rapidly replaced, and manpower is saved.

Description

Technical Field

[0001] The utility model belongs to the field of oil polished rod sealers, and particularly relates to a structure of a polished rod sealer with a replaceable seal quickly. Background Technique

[0002] The polished rod moves up and down driven by the pumping unit, and the polished rod drives the sucker rod to pump out the underground oil. In this process, in order to prevent oil leakage, it is necessary to seal the polished rod. The polished rod sealer is installed on the wellhead of the pumping well to seal the polished rod of the pumping unit. For example, a disclosed polished rod sealer with the patent application number CN92243413.1 is composed of a pressure amplitude, a gland, a box body, a packing and a lower joint. A centralizer sleeve is arranged below or on both the upper and lower sides of the packing. The eccentric wear force of the polished rod is mainly borne by the centralizer sleeve, and the centralizer sleeve can be on both the upper and lower sides of the packing. The patent application number CN202223251933.7 discloses a polished rod sealer with a displacement deviation correction and adjustment function, including a housing with a through hole in the middle, a gland installed at the upper end of the through hole of the housing and having a hole in the middle, a polished rod with an outer wall attached to the hole of the gland, and a joint fixed to the middle of the lower end of the housing.

[0003] In actual production, the sealing elements in the polished rod sealer need to be replaced frequently. Restricted by environmental protection and production, the replacement operation is required to be completed quickly and conveniently. The current structural form is to drill concave holes on the outside of the housing, gland and joint, separate the housing from the gland and joint with a special wrench, and then one person holds the gland (joint), and the other person replaces the sealing element. It takes a long time and it is necessary to prevent hand injuries. Summary of the Invention

[0004] The purpose of the utility model is to provide a structure of a polished rod sealer with a replaceable seal quickly, which is simple and practical, convenient for operation, and improves the working efficiency of replacing the sealing elements in the sealer.

[0005] To achieve the above purpose, the utility model is realized through the following technical solutions:

[0006] A structure of a polished rod sealer with a replaceable seal quickly includes a joint, a housing, a gland, a lifting lug and a replacement wrench. The lower end of the joint is threadedly connected to the wellhead, the upper end of the joint is threadedly connected to the housing, and the top end of the housing is threadedly connected to the gland; lifting lugs are welded to the outside of the joint, housing and gland, and the end of the replacement wrench can be inserted into the lifting lugs.

[0007] The lifting lugs are evenly distributed along the radial direction on the joint.

[0008] The lifting lugs are evenly distributed along the radial direction on the housing.

[0009] The lifting lugs are evenly distributed along the radial direction on the gland.

[0010] The replacement wrench described is of a U-shaped structure.

[0011] There are 2 to 4 pieces of the replacement wrench described.

[0012] Sealing elements are provided inside the upper and lower ends of the housing.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. The overall structure of the polished rod seal structure with quick-seal replacement is simple and practical, and the operation is convenient and safe. Using the polished rod seal structure with quick-seal replacement can quickly replace the sealing element inside the seal, saving manpower.

[0015] 2. The polished rod seal structure with quick-seal replacement has fixed lifting lugs on the outside of the joint, housing, and gland, which is convenient for the replacement wrench to disassemble and assemble, and at the same time, it is also convenient for the replacement wrench to insert into the lifting lug to support the housing and / or gland and other structures. Without manual support for the gland and the polished rod connected to the gland and other structures, the replacement of the sealing element can be realized, which is convenient for on-site operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the polished rod seal structure with quick-seal replacement.

[0017] Figure 2 It is a schematic structural diagram of the replacement wrench.

[0018] Figure 3 It is a schematic structural diagram of the separated state of the gland and the housing.

[0019] Figure 4 It is a schematic structural diagram of the separated state of the housing and the joint.

[0020] In the figure: 1 - joint, 2 - housing, 3 - gland, 4 - lifting lug, 5 - replacement wrench. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The present utility model will be described in detail below with reference to the accompanying drawings of the specification, but it should be noted that the implementation of the present utility model is not limited to the following embodiments.

[0022] See Figures 1 - 4 , a polished rod seal structure with quick-seal replacement, including a joint 1, a housing 2, a gland 3, a lifting lug 4, and a replacement wrench 5. The lower end of the joint 1 is threadedly connected to the wellhead, and the upper end of the joint 1 is threadedly connected to the housing 2. The top of the housing 2 is threadedly connected to the gland 3. Lifting lugs 4 are welded to the outside of the joint 1, housing 2, and gland 3. Through holes are opened in the middle of the lifting lugs 4, and the end structure of the replacement wrench 5 matches the through holes. The end of the replacement wrench 5 can be inserted into the lifting lug 4. The replacement wrench 5 is of a U-shaped structure, and both ends can be inserted into the lifting lug 4. There are 2 to 4 pieces of the replacement wrench 5.

[0023] The lifting lugs 4 are evenly distributed radially on the joint 1, and the lifting lugs 4 on the joint 1 are on the same horizontal plane, and the number of the lifting lugs 4 is 2 to 4 pieces. The lifting lugs 4 are evenly distributed radially on the housing 2, and the lifting lugs 4 on the housing 2 are on the same horizontal plane, and the number of the lifting lugs 4 is 2 to 4 pieces. The lifting lugs 4 are evenly distributed radially on the gland 3, and the lifting lugs 4 on the gland 3 are on the same horizontal plane, and the number of the lifting lugs 4 is 2 to 4 pieces.

[0024] Sealing elements are provided inside the upper and lower ends of the housing 2. See Figure 2 , the replacement wrench 5 is made of round steel by bending, the replacement wrench 5 is of U-shaped structure, and the number of the replacement wrenches 5 is 2 to 4 pieces.

[0025] See Figure 3 , when it is necessary to replace the sealing element between the housing 2 and the gland 3, insert the replacement wrench 5 into the lifting lug 4 outside the gland 3, and turn the replacement wrench 5 to rotate the gland 3 to separate it from the housing 2. The lifting lug 4 of the gland 3 is placed directly above the lifting lug 4 of the housing 2. Insert the two ends of the replacement wrench 5 into the lifting lugs 4 of the gland 3 and the housing 2 respectively, and the sealing element can be replaced safely and quickly. See Figure 4 , when it is necessary to replace the sealing element between the housing 2 and the joint 1, insert the replacement wrench 5 into the lifting lug 4 of the housing 2, turn the replacement wrench 5 to rotate the housing 2 to separate it from the joint 1, and then insert the two ends of the replacement wrench 5 into the lifting lugs 4 of the joint 1 and the housing 2 respectively, and the sealing element can be replaced safely and quickly.

[0026] The overall structure of the utility model is simple and practical, the operation is convenient and safe. The use of the polished rod seal with a quickly replaceable seal can quickly replace the sealing element in the seal and save manpower. The lifting lugs 4 are fixed outside the joint 1, the housing 2 and the gland 3, which is convenient for the replacement wrench 5 to disassemble and assemble, and at the same time it is also convenient for the replacement wrench 5 to be inserted into the lifting lug 4 to support structures such as the housing 2 and / or the gland 3. Without manually supporting the gland 3 and the polished rod connected to the gland 3 and other structures, the replacement of the sealing element can be realized. Only one kind of replacement wrench 5 tool can complete the operation of replacing the sealing element, and only one operator can complete the operation of replacing the sealing element, reducing the number of operators and improving the work efficiency.

[0027] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the utility model, according to the technical solution of the utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the utility model.

Claims

1. A polished rod seal structure with a quickly replaceable seal, characterized in that, It includes a connector, a housing, a gland, a lifting lug, and a replacement wrench. The lower end of the connector is threadedly connected to the wellhead, the upper end of the connector is threadedly connected to the housing, and the top end of the housing is threadedly connected to the gland; lifting lugs are welded to the outside of the connector, the housing, and the gland, and the end of the replacement wrench can be inserted into the lifting lug.

2. The structure of a polished rod seal device with quick-change seal according to claim 1, characterized in that, The lifting lugs are evenly distributed radially on the connector.

3. A polished rod seal structure with a quickly replaceable seal according to claim 1, characterized in that, The lifting lugs are evenly distributed radially on the housing.

4. The structure of a polished rod seal device with a quickly replaceable seal according to claim 1, characterized in that, The lifting lugs are evenly distributed radially on the gland.

5. The structure of a polished rod seal device with quick-change seal according to claim 1, characterized in that, The replacement wrench is of U-shaped structure.

6. The structure of a polished rod seal that can be quickly replaced with a seal according to claim 1, characterized in that, There are 2 to 4 pieces of the replacement wrench.

7. A polished rod seal structure with a quickly replaceable seal according to claim 1, characterized in that, Sealing elements are provided inside the upper and lower ends of the housing.

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