Manual valve wrench

Abstract

The utility model provides a manual valve wrench, comprising a wrench head matching the lock cover of the manual valve, a plug radially arranged on the inner side wall of the wrench head and having an extension, and a handle for rotation; the wrench head contacts the outer wall surface of the lock cover of the manual valve, and the plug is plugged into the insertion hole of the manual valve. The manual valve wrench of the utility model realizes a stable connection with the manual valve through a specially designed wrench head and plug, effectively prevents slippage during operation, improves work efficiency, and reduces safety hazards. The design of the handle fully considers the ergonomic principles, making the operation more convenient and comfortable, and reducing the fatigue of the operator.

Description

Technical Field

[0001] The utility model relates to the field of auxiliary instruments for nuclear power plants, in particular to a manual valve wrench. Background Art

[0002] The core measurement system of a nuclear power plant is an important part of the instrumentation and control system of a nuclear power plant. It consists of three systems: water level measurement, temperature measurement, and neutron flux measurement. The neutron flux measurement system includes a cabinet, a drive mechanism, and a selector.

[0003] The manual valve plays a very important role in the neutron flux measurement system. It is a barrier to prevent the leakage of the primary circuit water in the guide tube. Under normal operating conditions of the nuclear power plant, the manual valve is open, and the finger sleeve passes through its internal cavity into the pressure vessel to reach the top of the core fuel assembly. When the nuclear power plant needs to completely withdraw the entire finger sleeve from the pressure vessel, the manual valve needs to be closed to prevent the withdrawal of the finger sleeve from causing leakage of the primary circuit water.

[0004] The appearance and structure of the manual valve are different from those of conventional doors on the market. In addition, the installation space of the manual valve on site is relatively narrow, so a special tool is required to open and close the manual valve. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a manual valve wrench for the above-mentioned problem, which can be applied to the manual valve of the neutron flux measurement system and can be used in the narrow installation space on site.

[0006] The utility model solves the above technical problems by adopting a technical solution: providing a manual valve wrench, including a wrench head matching the lock cover of the manual valve, a plug radially arranged on the inner wall of the wrench head and having a protruding amount, and a handle for rotation; the wrench head contacts the outer wall surface of the lock cover of the manual valve, and the plug is inserted into the insertion hole of the manual valve. When in use, the wrench head is matched with the outer surface of the lock cover of the valve, and the plug is inserted into the wrench insertion hole. The handle is rotated with the center of the wrench head to open and close the manual valve.

[0007] Furthermore, it is preferred that the wrench head is a semicircular arc structure, and the radius of the arc is consistent with the radius of the lock cover of the manual valve to ensure that the two can fit tightly.

[0008] Furthermore, the manual valve wrench preferably also includes a baffle plate disposed on the top surface of the wrench head, and the baffle plate is pressed against the upper end surface of the nail of the manual valve. The size and shape of the baffle plate are designed according to the upper end surface of the nail of the manual valve to ensure that the baffle plate can be tightly pressed against the upper end surface of the nail. The setting of the baffle plate can better hold the manual valve and prevent it from suddenly bursting out due to external force during the rotation process, thereby improving safety, and can also position the manual valve wrench to reach the target working position more quickly.

[0009] Further, it is preferred that the diameter of the plug is consistent with the diameter of the insertion hole of the manual valve to ensure that the plug can be firmly inserted into the hole.

[0010] Furthermore, it is preferred that the length of the plug is at least 1 / 2 of the depth of the insertion hole of the manual valve to ensure that the plug can be firmly inserted into the hole.

[0011] Furthermore, it is preferred that a guide head is provided at the front section of the plug, and the width of the guide head gradually increases from the outer end to the inner end. The provision of the guide head enables the plug to be inserted into the insertion hole of the manual valve better and faster.

[0012] Furthermore, it is preferred that the handle is detachably connected to the wrench head.

[0013] Furthermore, it is preferred that the handle is fixedly connected to the wrench head.

[0014] Furthermore, it is preferred that the wrench head and the plug are made of metal.

[0015] The manual valve wrench of the utility model has at least the following beneficial effects:

[0016] 1. Through the specially designed wrench and plug, a stable connection with the manual valve is achieved, which effectively prevents slippage during operation, improves work efficiency and reduces safety hazards.

[0017] 2. The design of the baffle further enhances the connection stability between the wrench and the manual valve, making the operation more reliable.

[0018] 3. The design of the handle fully considers the principles of ergonomics, making the operation more convenient and comfortable, and reducing the fatigue of the operator.

[0019] 4. The connection methods between the various parts of the wrench are flexible and diverse. They can be either detachable or fixed, which is convenient for adjustment according to actual needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of a manual valve wrench in some embodiments of the utility model;

[0022] Figure 2 yes Figure 1 Top view of the . DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0025] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0028] like Figure 1-Figure 2As shown, the utility model provides a manual valve wrench, comprising a wrench head 10 matching the locking cover of the manual valve, a plug 20 radially arranged on the inner wall of the wrench head 10 and having an extension, and a handle 30 for rotation; the wrench head 10 contacts the outer wall surface of the locking cover of the manual valve, and the plug 20 is inserted into the insertion hole of the manual valve.

[0029] When in use, the wrench head 10 of the wrench is matched with the outer surface of the lock cover of the valve, and the plug 20 is inserted into the wrench insertion hole. The handle 30 is rotated at the center of the wrench head 10 to open and close the manual valve.

[0030] In a specific embodiment, the wrench head 10 is a semicircular arc structure, and the radius of the arc is consistent with the radius of the lock cover of the manual valve, ensuring that the two can fit tightly.

[0031] In a specific embodiment, the manual valve wrench further includes a baffle 40 disposed on the top surface of the wrench head 10, and the baffle 40 is pressed against the upper end surface of the nail of the manual valve. The size and shape of the baffle 40 are designed according to the upper end surface of the nail of the manual valve to ensure that the baffle 40 can be tightly pressed against the upper end surface of the nail. The setting of the baffle 40 can better hold the manual valve and prevent it from suddenly bursting out due to external force during the rotation process, thereby improving safety, and can also position the manual valve wrench to reach the target working position more quickly.

[0032] In a specific embodiment, the manual valve wrench further comprises an upper end cover arranged on the top surface of the wrench head, the upper end cover is pressed against the upper end surface of the nail of the manual valve, that is, the top surface of the wrench head is sealed, and the size and shape of the upper end cover are designed according to the upper end surface of the nail of the manual valve to ensure that the upper end cover can be tightly pressed against the upper end surface of the nail. The setting of the upper end cover can better hold the manual valve, prevent it from suddenly bursting out due to external force during the rotation process, improve safety, and can also position the manual valve wrench to the target working position more quickly.

[0033] In a specific embodiment, the diameter of the plug 20 is consistent with the diameter of the insertion hole of the manual valve to ensure that the plug 20 can be firmly inserted into the hole.

[0034] In a specific embodiment, the length of the plug 20 is at least 1 / 2 of the depth of the insertion hole of the manual valve. The length of the plug 20 is at least 1 / 2 of the depth of the insertion hole to ensure that the plug 20 can be firmly inserted into the hole.

[0035] In a specific embodiment, a guide head 11 is provided at the front section of the plug 20, and the width of the guide head 11 gradually increases from the outer end to the inner end. The setting of the guide head 11 allows the plug 20 to be inserted into the insertion hole of the manual valve better and faster.

[0036] In a specific embodiment, the wrench head 10 and the plug 20 may be integrally formed or may be a split structure. The split structure may require replacement of different plugs 20 to adapt to different manual valves.

[0037] The connection method between the handle 30 and the wrench head 10 can be selected according to actual needs. If the size and shape of the wrench needs to be frequently changed or adjusted, a detachable connection method can be selected; if the wrench is used in a relatively fixed scenario, a fixed connection method can be selected to improve the stability and reliability of the structure, such as fixed connection by welding.

[0038] Considering the diversity and complexity of the use environment, the wrench 10 and the plug 20 are made of metal material, such as stainless steel, to improve their durability and reliability. The handle 30 can also be made of metal material to improve its durability and reliability.

[0039] The manual valve wrench of the utility model has at least the following beneficial effects:

[0040] 1. Easy to operate: The manual valve wrench has a simple structure design and is easy to operate.

[0041] 2. Through the specially designed wrench and plug, a stable connection with the manual valve is achieved, which effectively prevents slippage during operation, improves work efficiency and reduces safety hazards.

[0042] 3. The design of the baffle further enhances the connection stability between the wrench and the manual valve, making the operation more reliable.

[0043] 4. The design of the handle fully considers the principles of ergonomics, making the operation more convenient and comfortable, and reducing the fatigue of the operator.

[0044] 5. The connection methods between the various parts of the wrench are flexible and diverse. They can be either detachable or fixed, which is convenient for adjustment according to actual needs.

[0045] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A manual valve wrench, characterized in that: It comprises a wrench head matched with the locking cover of the manual valve, a plug radially arranged on the inner side wall of the wrench head and having a protruding amount, and a handle for rotation; the wrench head contacts the outer wall surface of the locking cover of the manual valve, and the plug is plugged into the insertion hole of the manual valve.

2. The manual valve wrench according to claim 1, characterized in that: The wrench head is a semicircular arc structure, and the radius of the arc is consistent with the radius of the lock cover of the manual valve.

3. The manual valve wrench according to claim 1, characterized in that: The manual valve wrench also includes a baffle plate arranged on the top surface of the wrench head, and the baffle plate is pressed on the upper end surface of the nail of the manual valve.

4. The manual valve wrench according to claim 1, characterized in that: The manual valve wrench also includes an upper end cover arranged on the top surface of the wrench head, and the upper end cover is pressed on the upper end surface of the nail of the manual valve.

5. The manual valve wrench according to claim 1, characterized in that: The diameter of the plug is consistent with the diameter of the insertion hole of the manual valve.

6. The manual valve wrench according to claim 1, characterized in that: The length of the plug is at least 1 / 2 of the depth of the insertion hole of the manual valve.

7. The manual valve wrench according to claim 1, characterized in that: The handle is detachably connected to the wrench.

8. The manual valve wrench according to claim 1, characterized in that: The handle is fixedly connected to the wrench head.

9. The manual valve wrench according to claim 1, characterized in that: The wrench head and the plug are made of metal.

10. The manual valve wrench according to claim 1, characterized in that: The front section of the plug is provided with a guide head, and the width of the guide head gradually increases from the outer end to the inner end.

Images