CN218973821U

CN218973821U - Check connecting device for threaded safety valve

Info

Publication number: CN218973821U
Application number: CN202223391211.1U
Authority: CN
Inventors: 张荣国; 张�林; 刘建兵; 徐智明; 牛耕; 陆世海; 柳浩文
Original assignee: Aksu Special Equipment Inspection And Testing Institute
Current assignee: Aksu Special Equipment Inspection And Testing Institute
Priority date: 2022-12-18
Filing date: 2022-12-18
Publication date: 2023-05-05
Anticipated expiration: 2032-12-18

Abstract

The utility model relates to the technical field of safety valve checking and connecting equipment, in particular to a threaded safety valve checking and connecting device. The problem that current check-up connecting device can only carry out threaded connection with the relief valve of same model is mainly aimed at, its technical scheme includes: the large-scale relief valve test disc, the large-scale relief valve test disc passes through drive assembly and is connected with the jack catch, and the inner circle movable sleeve of large-scale relief valve test disc is equipped with the test bench jack post, the top of test bench jack post is provided with the check-up dish, the top of check-up dish is provided with the clamp seat, the top threaded connection of clamp seat has screwed joint, screwed joint's top threaded connection has the screwed joint relief valve body. The threaded connector can be connected with the threaded safety valve bodies of different types, so that replacement of different connecting devices can be avoided, the cost can be reduced, and the threaded safety valve bodies can be conveniently installed and checked.

Description

Check connecting device for threaded safety valve

Technical Field

The utility model relates to the technical field of safety valve checking and connecting equipment, in particular to a threaded safety valve checking and connecting device.

Background

The safety valve is a special valve which is in a normally closed state under the action of external force and prevents the medium pressure in the pipeline or the equipment from exceeding a specified value by discharging the medium to the outside of the system when the medium pressure in the equipment or the pipeline rises to exceed the specified value. The safety valve belongs to automatic valves, and is mainly used for boilers, pressure vessels and pipelines, and the control pressure does not exceed a specified value, so that the safety valve plays an important role in protecting personal safety and equipment operation. The injection safety valve must be subjected to a pressure test to be usable. The safety valve plays a role in safety protection in the system. When the pressure of the system exceeds a specified value, the safety valve is opened, and part of gas/fluid in the system is discharged outside the atmosphere/pipeline, so that the pressure of the system does not exceed an allowable value, and the system is ensured not to be in accident due to the overhigh pressure. The performance check project of the safety valve should generally be pressure set and sealing performance test.

The current chinese patent of patent number CN211904640U discloses a threaded connection sealing device for check-up of relief valve, establish at the external screw thread main part of connecting seat including connecting seat and cover, be equipped with the air current passageway in the connecting seat, be equipped with sliding channel between connecting seat and the screw thread main part, screw thread main part top is equipped with the connecting hole section that is used for the cover to establish on the threaded connection head of relief valve, be equipped with on the connecting hole section inner wall with the threaded connection head complex screw thread of relief valve, be equipped with the compensating mechanism that is used for increasing the threaded connection area between screw thread on the connecting hole section of screw thread main part and the threaded connection head of relief valve in the sliding channel.

According to the chinese patent disclosed in CN211904640U, the device can only be screwed with the safety valve of the same model, and the threads of the safety valves of different models are inside and outside, so that the verification of the safety valves can be limited, and the safety valves of different models need to be replaced and connected with different connecting devices, which is very complicated.

Disclosure of Invention

The utility model aims at solving the problem that in the background technology, only the threaded connection with the safety valve of the same model is available, and provides a check connection device of a threaded safety valve.

The technical scheme of the utility model is as follows: the utility model provides a connect relief valve check-up connecting device, includes large-scale relief valve test dish, large-scale relief valve test dish passes through drive assembly and is connected with the jack catch, and the inner circle movable sleeve of large-scale relief valve test dish is equipped with the test bench jack post, the top of test bench jack post is provided with the check-up dish, the top of check-up dish is provided with the clamp seat, the top threaded connection of clamp seat has screwed joint, screwed joint's top threaded connection has the wire to connect the relief valve body.

Preferably, the top of the claw is provided with an inward protruding clamping ring, and the inner end surface of the clamping ring is provided with a pressing surface for pressing the whole valve body; the outside of the clamp seat is provided with a pressure-bearing surface; when the corresponding full valve body is arranged on the clamp seat, the clamp seat is arranged on the check disc and the check disc seat is arranged on the jack post of the test bed, the pressing surface of the full valve body is tightly pressed on the pressing surface of the clamp seat, and the outer end surfaces of the clamp seat and the check disc are matched and correspond and are tightly stuck inside the clamping jaws.

Preferably, a first groove is formed between the test bed top column and the check disc, a second groove is formed between the check disc and the clamp seat, and a third groove is formed between the clamp seat and the threaded joint.

Preferably, sealing rings are arranged in the first groove, the second groove and the third groove, and four mounting grooves are formed in the side wall of the large safety valve test disc.

Preferably, the driving assembly comprises a bearing fixedly sleeved in the inner ring of the mounting groove, a screw rod is fixedly sleeved on the outer ring of the bearing, and the other end of the screw rod penetrates through the outer part of the large-sized safety valve test disc and is connected with a rotary disc.

Preferably, the bottom of jack catch has seted up the internal thread hole, internal thread hole and lead screw looks adaptation.

Preferably, an opening is formed in the top of the large safety valve test disc, the opening is communicated with the mounting groove, and the clamping jaw is in sliding connection with the opening.

Compared with the prior art, the utility model has the following beneficial technical effects:

the cooperation of drive assembly and test bench jack post can drive the jack catch and fix a position check-up dish and clamp seat fast, and follow-up pressurization of being convenient for is fixed, and screwed joint can be connected with the screwed relief valve body of different models simultaneously to can avoid changing different connecting device, not only can reduce cost, still conveniently install, check-up the screwed relief valve body.

Drawings

FIG. 1 is an exploded view of a threaded safety valve check connection;

FIG. 2 is an assembly view of a first embodiment of the threaded joint of FIG. 1;

fig. 3 is an assembly view of a second embodiment of the threaded joint of fig. 1.

Reference numerals: 1. a large safety valve test disc; 2. a bearing; 3. a screw rod; 4. a claw; 5. a test bed jack-prop; 6. checking a disc; 7. a clamp seat; 8. a threaded joint; 8a, joint I; 8b, a second joint; 9. a wire-connected safety valve body; 10. and (3) sealing rings.

Description of the embodiments

The technical scheme of the utility model is further described below with reference to the attached drawings and specific embodiments.

Example 1

As shown in fig. 1 and 2, the screwed safety valve checking and connecting device provided by the utility model comprises a large safety valve test disc 1, wherein the large safety valve test disc 1 is connected with a claw 4 through a driving assembly, a test bench jack post 5 is movably sleeved on an inner ring of the large safety valve test disc 1, a checking disc 6 is arranged at the top end of the test bench jack post 5, a clamp seat 7 is arranged at the top of the checking disc 6, a threaded connector 8 is connected with the top end of the clamp seat 7 through threads, a screwed safety valve body 9 is connected with the top end of the threaded connector 8 through threads, the threaded connector 8 comprises a first connector 8a and a second connector 8b, and first threads are respectively arranged on an upper through hole and a lower through hole of the first connector 8a and are respectively matched with external threads of the clamp seat 7 and the screwed safety valve body 9.

The top of the claw 4 is provided with an inward protruding clamping ring, and the inner end surface of the clamping ring is provided with a pressing surface for pressing the whole valve body 9; the outside of the clamp seat 7 is provided with a pressure bearing surface; when the corresponding full valve body 9 is arranged on the clamp seat 7, the clamp seat 7 is arranged on the check disc 6 and the check disc 6 is arranged on the test bed jack post 5, the pressing surface of the full valve body 9 is tightly pressed on the pressure bearing surface of the clamp seat 7, and the outer end surfaces of the clamp seat 7 and the check disc 6 are matched and correspond and are tightly adhered to the inside of the clamping jaw 4.

In this embodiment, when the screw-connection safety valve body 9 adopts external threads, the clamp seat 7 is in threaded connection with the first connector 8a, and is in threaded connection with the screw-connection safety valve body 9 through the first connector 8a, and then the check disc 6 and the clamp seat 7 are combined together and placed above the through hole of the large-sized safety valve test disc 1, and the claw 4 is driven by the driving component and the upward thrust applied to the check disc 6 by the test bed jacking column 5 is further used for clamping and fixing the check disc 6 and the clamp seat 7 together.

Example two

As shown in fig. 1 and fig. 3, compared with the first embodiment, the screw-connection safety valve checking and connecting device provided by the utility model further comprises a large-sized safety valve testing disc 1 connected with the clamping jaw 4 through the driving component, a testing table jack post 5 is movably sleeved on an inner ring of the large-sized safety valve testing disc 1, a checking disc 6 is arranged at the top end of the testing table jack post 5, a clamp seat 7 is arranged at the top of the checking disc 6, a threaded connector 8 is connected with the top end of the clamp seat 7 through threads, the screw-connection safety valve body 9 is connected with the top end of the threaded connector 8 through threads, the threaded connector 8 comprises a first connector 8a and a second connector 8b, the upper through hole and the lower through hole of the first connector 8a are respectively provided with threads one, two threads are respectively matched with external threads of the clamp seat 7 and the screw-connection safety valve body 9, two threads are respectively provided with an outer ring and an inner ring of the second connector 8b, and are respectively matched with external threads of the clamp seat 7 and the screw-connection safety valve body 9.

In this embodiment, when the threaded safety valve body 9 adopts the internal thread, the clamp seat 7 is in threaded connection with the second joint 8b, and then is in threaded connection with the threaded safety valve body 9 through the second joint 8b, so that the threaded safety valve body 9 with the internal thread can be fixed above the large safety valve test disc 1.

Example III

As shown in fig. 1-3, compared with the first embodiment or the second embodiment, the clamp type safety valve checking and connecting device provided by the utility model further comprises a first groove arranged between the test bench top column 5 and the checking disc 6, a second groove arranged between the checking disc 6 and the clamp seat 7, a third groove arranged between the clamp seat 7 and the threaded joint 8, sealing rings 10 arranged in the first groove, the second groove and the third groove, the third groove and the sealing rings 10 are in an 'O' shape, four mounting grooves are formed in the side wall of the large safety valve testing disc 1, a driving assembly comprises a bearing 2 fixedly sleeved in the inner ring of the mounting groove, a screw rod 3 is fixedly sleeved on the outer ring of the bearing 2, the other end of the screw rod 3 penetrates through the outer part of the large safety valve testing disc 1 and is connected with a rotary disc, an inner threaded hole is formed in the bottom of the claw 4, the inner threaded hole is matched with the screw rod 3, an opening is formed in the top of the large safety valve testing disc 1, and the opening is communicated with the mounting groove 4 in a sliding manner.

In this embodiment, rotate lead screw 3 through with the internal thread hole cooperate can drive jack catch 4 and remove to can drive four jack catches 4 and remove to the direction that keeps away from each other or be close to each other, and then can be located check-up dish 6 and clamp seat 7 of large-scale relief valve test dish 1 through-hole top and fix fast, make things convenient for follow-up pressurization fixed.

In this embodiment, all offer the gas pocket on test bench jack post 5, check-up dish 6 and the clamp seat 7, and link up each other between a plurality of gas pockets, the setting of a plurality of gas pockets is used for the check-up of product.

The above-described embodiments are merely a few preferred embodiments of the present utility model, and many alternative modifications and combinations of the above-described embodiments will be apparent to those skilled in the art based on the technical solutions of the present utility model and the related teachings of the above-described embodiments.

Claims

1. The wire-connection safety valve checking and connecting device comprises a large-scale safety valve test disc (1), and is characterized in that: the large safety valve test disc (1) is connected with the clamping jaw (4) through the driving assembly, the inner ring movable sleeve of the large safety valve test disc (1) is provided with a test bench jack post (5), the top of the test bench jack post (5) is provided with a check disc (6), the top of the check disc (6) is provided with a clamp seat (7), the top threaded connection of the clamp seat (7) is provided with a threaded connector (8), and the top threaded connection of the threaded connector (8) is provided with a screwed safety valve body (9).

2. The wire-connection safety valve checking and connecting device according to claim 1, wherein the top of the claw (4) is provided with an inward protruding clamping ring, and the inner end surface of the clamping ring is provided with a pressing surface for pressing the whole valve body (9); the outside of the clamp seat (7) is provided with a pressure-bearing surface; corresponding full valve body (9) seat on clamp seat (7), clamp seat (7) seat on check-up dish (6), check-up dish (6) seat on test bench jack-prop (5), the oppression face of full valve body (9) sticiss on the pressure-bearing face of clamp seat (7), check-up dish (6) outer terminal surface match correspond and all closely paste in jack catch (4) inside.

3. The screwed safety valve checking and connecting device according to claim 1 or 2, wherein grooves I are formed between the test bench jack post (5) and the checking disc (6), grooves II are formed between the checking disc (6) and the clamp seat (7), and grooves III are formed between the clamp seat (7) and the screwed joint (8).

4. The wire-connection safety valve checking and connecting device according to claim 3, wherein sealing rings (10) are arranged in the first groove, the second groove and the third groove, and four mounting grooves are formed in the side wall of the large-sized safety valve test disc (1).

5. The screw-connected safety valve checking and connecting device according to claim 4, wherein the driving assembly comprises a bearing (2) fixedly sleeved in an inner ring of the mounting groove, a screw rod (3) is fixedly sleeved on an outer ring of the bearing (2), and the other end of the screw rod (3) penetrates through the outer part of the large-sized safety valve test disc (1) and is connected with a rotary disc.

6. The screwed safety valve checking and connecting device according to claim 5, wherein the bottom of the claw (4) is provided with an internal threaded hole, and the internal threaded hole is matched with the screw rod (3).

7. The wire-connection safety valve verification connection device according to claim 4, wherein an opening is formed in the top of the large-sized safety valve test disc (1), the opening is communicated with the mounting groove, and the claw (4) is slidably connected with the opening.